chore(master): release 3.1.0

Release-As: 3.0.0

.github/workflows/docs.yml

@@ -1,30 +0,0 @@
-name: Documentation
-
-on:
-  push:
-    branches:
-      - master
-
-permissions:
-  contents: write
-
-jobs:
-  docs:
-    name: Build Documentation
-    runs-on: ubuntu-latest
-    # if: "contains(github.event.head_commit.message, 'chore(release)')"
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 20
-      - run: npm i -g pnpm
-      - run: |
-          pnpm install --frozen-lockfile
-          cd docs && pnpm install --frozen-lockfile
-      - run: pnpm docs:build
-      - name: Deploy on GitHub Pages
-        uses: peaceiris/actions-gh-pages@v3
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./docs/build

.github/workflows/release.yml

@@ -11,6 +11,7 @@ on:
 permissions:
   contents: write
   pull-requests: write
+  id-token: write
 
 jobs:
   test:
@@ -18,11 +19,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 20
-      - run: npm i -g pnpm
-      - run: pnpm run ci
+          cache: pnpm
+      - run: pnpm install --frozen-lockfile
       - run: pnpm test
 
   build:
@@ -30,11 +32,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 20
-      - run: npm i -g pnpm
-      - run: pnpm run ci
+          cache: pnpm
+      - run: pnpm install --frozen-lockfile
       - run: pnpm build
 
   release:
@@ -59,15 +62,39 @@ jobs:
     needs: release
     runs-on: ubuntu-latest
     if: ${{ needs.release.outputs.release_created }}
+    permissions:
+      contents: read
+      id-token: write
     steps:
       - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: pnpm
+          registry-url: "https://registry.npmjs.org"
+      - run: npm --version
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm build
+      - run: cd dist && npm publish --provenance --access public
+
+  docs:
+    name: Deploy Documentation
+    needs: release
+    runs-on: ubuntu-latest
+    if: ${{ needs.release.outputs.release_created }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 20
-          registry-url: "https://registry.npmjs.org"
-      - run: npm i -g pnpm
-      - run: pnpm run ci
-      - run: pnpm build
-      - run: cd dist && npm publish
-        env:
-          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+          cache: pnpm
+      - run: pnpm install --frozen-lockfile
+      - run: cd docs && pnpm install --frozen-lockfile
+      - run: pnpm docs:build
+      - name: Deploy to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./docs/build

.husky/pre-commit

@@ -0,0 +1 @@
+pnpm lint-staged

.prettierignore

@@ -0,0 +1,5 @@
+docs/docs/api/
+examples/
+.github/
+CHANGELOG.md
+pnpm-lock.yaml

.prettierrc

@@ -1,8 +1,9 @@
 {
   "semi": false,
+  "singleQuote": false,
   "trailingComma": "all",
-  "printWidth": 120,
   "tabWidth": 2,
+  "printWidth": 100,
   "overrides": [
     {
       "files": "*.md",

CHANGELOG.md

@@ -1,5 +1,37 @@
 # Change Log
 
+## [3.1.0](https://github.com/chenasraf/simple-scaffold/compare/v3.0.0...v3.1.0) (2026-03-23)
+
+
+### Features
+
+* after scaffold hook ([0a4ead1](https://github.com/chenasraf/simple-scaffold/commit/0a4ead17c013b5410e8eec8000e83fa7b7186fbb))
+* config validation ([972d199](https://github.com/chenasraf/simple-scaffold/commit/972d199fbb7167506f76eba697fbea6acea9de56))
+* init command ([7926b15](https://github.com/chenasraf/simple-scaffold/commit/7926b15053726d5eb9e5772b5f04c3989e567b2c))
+* scaffoldignore ([b5fd1df](https://github.com/chenasraf/simple-scaffold/commit/b5fd1df821eba7e13e5ceedc53da550c8dd7cd8e))
+* select, confirm and number input types ([f6408f2](https://github.com/chenasraf/simple-scaffold/commit/f6408f221d84d84c5671737af63ff8079093fd27))
+* update all ouput logging ([bb0248f](https://github.com/chenasraf/simple-scaffold/commit/bb0248f91a012c297e408f15f0846c5272166543))
+
+
+### Bug Fixes
+
+* interactive inputs with existing config/cli options ([c860e46](https://github.com/chenasraf/simple-scaffold/commit/c860e4644a3f3d4bd6b7dab9974accdf8bae9463))
+
+## [3.0.0](https://github.com/chenasraf/simple-scaffold/compare/v2.3.3...v3.0.0) (2026-03-23)
+
+
+### Features
+
+* add .scaffold.{ext} as auto-detected file ([04e7e89](https://github.com/chenasraf/simple-scaffold/commit/04e7e895d7d97e29cf1ded2f2d0ac8e6a237b997))
+* auto-detect config file ([68e6d17](https://github.com/chenasraf/simple-scaffold/commit/68e6d17fa9898dffbc620eba0140748a90bc007f))
+* interactive inputs ([519ef27](https://github.com/chenasraf/simple-scaffold/commit/519ef273ac3db4b7a1e71c8e1c456aa1334d6fbd))
+* predefined data inputs ([d64dd4f](https://github.com/chenasraf/simple-scaffold/commit/d64dd4f0e775d3bff3efb074d0af23d54edcbaab))
+
+
+### Bug Fixes
+
+* string helpers to words parts conversion ([af33c05](https://github.com/chenasraf/simple-scaffold/commit/af33c059b91d3f463a5d174ab3a0119c577880c5))
+
 ## [2.3.3](https://github.com/chenasraf/simple-scaffold/compare/v2.3.2...v2.3.3) (2025-06-18)
 
 

README.md

@@ -13,17 +13,12 @@
 
 </h2>
 
-Looking to streamline your workflow and get your projects up and running quickly? Look no further
-than Simple Scaffold - the easy-to-use NPM package that simplifies the process of organizing and
-copying your commonly-created files.
+Simple Scaffold is a file scaffolding tool. You define templates once, then generate files from them
+whenever you need — whether it's a single component or an entire app boilerplate.
 
-With its agnostic and un-opinionated approach, Simple Scaffold can handle anything from a few simple
-files to an entire app boilerplate setup. Plus, with the power of **Handlebars.js** syntax, you can
-easily replace custom data and personalize your files to fit your exact needs. But that's not all -
-you can also use it to loop through data, use conditions, and write custom functions using helpers.
-
-Don't waste any more time manually copying and pasting files - let Simple Scaffold do the heavy
-lifting for you and start building your projects faster and more efficiently today!
+Templates use **Handlebars.js** syntax, so you can inject data, loop over lists, use conditionals,
+and write custom helpers. It works as a CLI or as a Node.js library, and it doesn't care what kind
+of files you're generating.
 
 <div align="center">
 
@@ -45,6 +40,21 @@ See full documentation [here](https://chenasraf.github.io/simple-scaffold).
 
 ## Getting Started
 
+### Quick Start
+
+The fastest way to get started is to run `init` in your project directory:
+
+```sh
+npx simple-scaffold init
+```
+
+This creates a `scaffold.config.js` and an example template in `templates/default/`. Then generate
+files with:
+
+```sh
+npx simple-scaffold MyProject
+```
+
 ### Cheat Sheet
 
 A quick rundown of common usage scenarios:
@@ -100,9 +110,40 @@ See information about each option and flag using the `--help` flag, or read the
 [CLI documentation](https://chenasraf.github.io/simple-scaffold/docs/usage/cli). For information
 about how configuration files work, [see below](#configuration-files).
 
+### Interactive Mode
+
+When running in a terminal, Simple Scaffold will interactively prompt for any missing required
+values — name, output directory, template paths, and template key (if multiple are available).
+
+Config files can also define **inputs** — custom fields that are prompted interactively and become
+template data:
+
+```js
+module.exports = {
+  component: {
+    templates: ["templates/component"],
+    output: "src/components",
+    inputs: {
+      author: { message: "Author name", required: true },
+      license: { message: "License", default: "MIT" },
+    },
+  },
+}
+```
+
+Inputs can be pre-provided via `--data` or `-D` to skip the prompt:
+
+```sh
+npx simple-scaffold -c scaffold.config.js -k component -D author=John MyComponent
+```
+
 ### Configuration Files
 
-You can use a config file to more easily maintain all your scaffold definitions.
+You can use a config file to more easily maintain all your scaffold definitions. Simple Scaffold
+**auto-detects** config files in the current directory — no `--config` flag needed.
+
+It searches for these files in order: `scaffold.config.{mjs,cjs,js,json}`,
+`scaffold.{mjs,cjs,js,json}`, `.scaffold.{mjs,cjs,js,json}`.
 
 `scaffold.config.js`
 
@@ -120,10 +161,11 @@ module.exports = {
 }
 ```
 
-Then call your scaffold like this:
+Then just run from the same directory:
 
 ```sh
-$ npx simple-scaffold -c scaffold.config.js PageWrapper
+$ npx simple-scaffold PageWrapper
+# or explicitly: npx simple-scaffold -c scaffold.config.js PageWrapper
 ```
 
 This will allow you to avoid needing to remember which configs are needed or to store them in a

docs/docs/usage/01-templates.md

@@ -22,6 +22,25 @@ Examples:
 | `./templates/directory`       | `outer/{{name}}.txt`,<br />`outer2/inner/{{name}}.txt` | `src/outer/AppName.txt`,<br />`src/outer2/inner/AppName.txt` |
 | `./templates/others/**/*.txt` | `outer/{{name}}.jpg`,<br />`outer2/inner/{{name}}.txt` | `src/outer2/inner/AppName.txt`                               |
 
+## Ignoring files
+
+You can create a `.scaffoldignore` file in your template directory to exclude files from being
+copied to the output. It works like `.gitignore` — one pattern per line, comments with `#`.
+
+```text
+# .scaffoldignore
+*.log
+node_modules
+README.md
+dist/**
+```
+
+The `.scaffoldignore` file itself is never copied to the output.
+
+Patterns are matched against both the file's basename and its path relative to the template
+directory, so `README.md` will match at any depth, while `dist/**` only matches a `dist` directory
+at the template root.
+
 ## Variable/token replacement
 
 Scaffolding will replace `{{ varName }}` in both the file name and its contents and put the

docs/docs/usage/02-configuration_files.md

@@ -23,7 +23,8 @@ module.exports = {
 }
 ```
 
-For the full configuration options, see [ScaffoldConfigFile](../api/modules#scaffoldconfigfile).
+For the full configuration options, see
+[ScaffoldConfigFile](../api/type-aliases/ScaffoldConfigFile).
 
 If you want to supply functions inside the configurations, you must use a `.js`/`.cjs`/`.mjs` file
 as JSON does not support non-primitives.
@@ -45,6 +46,40 @@ module.exports = (config) => {
 }
 ```
 
+### Template Inputs
+
+You can define **inputs** in your config to prompt users for custom values when scaffolding. Each
+input becomes a template data variable:
+
+```js
+module.exports = {
+  component: {
+    templates: ["templates/component"],
+    output: "src/components",
+    inputs: {
+      author: { message: "Author name", required: true },
+      license: {
+        type: "select",
+        message: "License",
+        options: ["MIT", "Apache-2.0", "GPL-3.0"],
+      },
+      private: { type: "confirm", message: "Private?", default: false },
+      port: { type: "number", message: "Port", default: 3000 },
+    },
+  },
+}
+```
+
+In your templates, use these as `{{ author }}`, `{{ license }}`, `{{ private }}`, `{{ port }}`.
+
+Supported input types: `text` (default), `select`, `confirm`, `number`. See
+[Template Inputs](cli#template-inputs) for the full reference.
+
+- **Required** inputs are prompted interactively if not provided via `--data` or `-D`
+- **Select and confirm** inputs are always prompted unless pre-provided
+- **Optional** inputs with a `default` use that value silently if not provided
+- In non-interactive environments, only defaults are applied
+
 If you want to provide templates that need no name (such as common config files which are easily
 portable between projects), you may provide the `name` property in the config object.
 
@@ -53,9 +88,38 @@ default and therefore it will no longer be required in the CLI arguments.
 
 ## Using a config file
 
-Once your config is created, you can use it by providing the file name to the `--config` (or `-c`
-for brevity), optionally alongside `--key` or `-k`, denoting the key to use as the config object, as
-you define in your config:
+### Auto-detection
+
+By default, Simple Scaffold automatically searches the current working directory for a config file.
+No `--config` flag is needed if your config file uses one of the standard names.
+
+The following files are tried in order:
+
+1. `scaffold.config.mjs`
+2. `scaffold.config.cjs`
+3. `scaffold.config.js`
+4. `scaffold.config.json`
+5. `scaffold.mjs`
+6. `scaffold.cjs`
+7. `scaffold.js`
+8. `scaffold.json`
+9. `.scaffold.mjs`
+10. `.scaffold.cjs`
+11. `.scaffold.js`
+12. `.scaffold.json`
+
+If a config file is found, it is loaded automatically. If multiple templates are defined and no
+`--key` is provided, you'll be prompted to select one interactively.
+
+```sh
+# Just run from a directory containing scaffold.config.js — no flags needed
+simple-scaffold MyComponentName
+```
+
+### Explicit config path
+
+You can also provide a specific file or directory path using `--config` (or `-c`), optionally
+alongside `--key` or `-k`:
 
 ```sh
 simple-scaffold -c <file> -k <template_key>
@@ -67,7 +131,12 @@ For example:
 simple-scaffold -c scaffold.json -k component MyComponentName
 ```
 
-If you don't want to supply a template/config name (e.g. `component`), `default` will be used:
+When a directory is given, the same auto-detection order listed above is used to find a config file
+within that directory.
+
+### Default template key
+
+If you don't supply a template key (e.g. `component`), `default` will be used:
 
 ```js
 /** @type {import('simple-scaffold').ScaffoldConfigFile} */
@@ -78,36 +147,23 @@ module.exports = {
 }
 ```
 
-And then:
-
 ```sh
 # will use 'default' template
 simple-scaffold -c scaffold.json MyComponentName
 ```
 
-- When the a directory is given, the following files in the given directory will be tried in order:
-
-  - `scaffold.config.*`
-  - `scaffold.*`
-
-  Where `*` denotes any supported file extension, in the priority listed in
-  [Supported file types](#supported-file-types)
-
-- When the `template_key` is ommitted, `default` will be used as default.
+If multiple keys exist and no key is specified, you'll be prompted to choose one interactively.
 
 ### Supported file types
 
 Any importable file is supported, depending on your build process.
 
-Common files include:
+Common extensions:
 
-- `*.mjs`
-- `*.cjs`
-- `*.js`
-- `*.json`
-
-When filenames are ommited when loading configs, these are the file extensions that will be
-automatically tried, by the specified order of priority.
+- `.mjs`
+- `.cjs`
+- `.js`
+- `.json`
 
 Note that you might need to find the correct extension of `.js`, `.cjs` or `.mjs` depending on your
 build process and your package type (for example, packages with `"type": "module"` in their

docs/docs/usage/03-cli.md

@@ -13,24 +13,85 @@ To see this and more information anytime, add the `-h` or `--help` flag to your
 
 Options:
 
-| Option/flag \| Alias                              | Description                                                                                                                                                                                              |
-| ------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| `--name` \| `-n`                                  | Name to be passed to the generated files. `{{name}}` and other data parameters inside contents and file names will be replaced accordingly. You may omit the `--name` or `-n` for this specific option.  |
-| `--config` \| `-c`                                | Filename or directory to load config from                                                                                                                                                                |
-| `--git` \| `-g`                                   | Git URL or GitHub path to load a template from.                                                                                                                                                          |
-| `--key` \| `-k`                                   | Key to load inside the config file. This overwrites the config key provided after the colon in `--config` (e.g. `--config scaffold.cmd.js:component)`                                                    |
-| `--output` \| `-o`                                | Path to output to. If `--subdir` is enabled, the subdir will be created inside this path. Default is current working directory.                                                                          |
-| `--templates` \| `-t`                             | Template files to use as input. You may provide multiple files, each of which can be a relative or absolute path, or a glob pattern for multiple file matching easily.                                   |
-| `--overwrite` \| `-w` \| `--no-overwrite` \| `-W` | Enable to override output files, even if they already exist. (default: false)                                                                                                                            |
-| `--data` \| `-d`                                  | Add custom data to the templates. By default, only your app name is included.                                                                                                                            |
-| `--append-data` \| `-D`                           | Append additional custom data to the templates, which will overwrite `--data`, using an alternate syntax, which is easier to use with CLI: `-D key1=string -D key2:=raw`                                 |
-| `--subdir` \| `-s` \| `--no-subdir` \| `-S`       | Create a parent directory with the input name (and possibly `--subdir-helper` (default: false)                                                                                                           |
-| `--subdir-helper` \| `-H`                         | Default helper to apply to subdir name when using `--subdir`.                                                                                                                                            |
-| `--quiet` \| `-q`                                 | Suppress output logs (Same as `--log-level none`)(default: false)                                                                                                                                        |
-| `--log-level` \| `-l`                             | Determine amount of logs to display. The values are: `none, debug, info, warn, error`. The provided level will display messages of the same level or higher. (default: info)                             |
-| `--before-write` \| `-B`                          | Run a script before writing the files. This can be a command or a path to a file. A temporary file path will be passed to the given command and the command should return a string for the final output. |
-| `--dry-run` \| `-dr`                              | Don't emit files. This is good for testing your scaffolds and making sure they don't fail, without having to write actual file contents or create directories. (default: false)                          |
-| `--version` \| `-v`                               | Display version.                                                                                                                                                                                         |
+| Option/flag \| Alias                              | Description                                                                                                                                                                                                                                                    |
+| ------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `--name` \| `-n`                                  | Name to be passed to the generated files. `{{name}}` and other data parameters inside contents and file names will be replaced accordingly. If omitted in an interactive terminal, you will be prompted.                                                       |
+| `--config` \| `-c`                                | Filename or directory to load config from. If omitted, the current directory is searched automatically for a config file (see [Auto-detection](configuration_files#auto-detection)).                                                                           |
+| `--git` \| `-g`                                   | Git URL or GitHub path to load a template from.                                                                                                                                                                                                                |
+| `--key` \| `-k`                                   | Key to load inside the config file. If omitted and multiple templates are available, you will be prompted to select one.                                                                                                                                       |
+| `--output` \| `-o`                                | Path to output to. If `--subdir` is enabled, the subdir will be created inside this path. If omitted in an interactive terminal, you will be prompted.                                                                                                         |
+| `--templates` \| `-t`                             | Template files to use as input. You may provide multiple files, each of which can be a relative or absolute path, or a glob pattern for multiple file matching easily. If omitted in an interactive terminal, you will be prompted for a comma-separated list. |
+| `--overwrite` \| `-w` \| `--no-overwrite` \| `-W` | Enable to override output files, even if they already exist. (default: false)                                                                                                                                                                                  |
+| `--data` \| `-d`                                  | Add custom data to the templates. By default, only your app name is included.                                                                                                                                                                                  |
+| `--append-data` \| `-D`                           | Append additional custom data to the templates, which will overwrite `--data`, using an alternate syntax, which is easier to use with CLI: `-D key1=string -D key2:=raw`                                                                                       |
+| `--subdir` \| `-s` \| `--no-subdir` \| `-S`       | Create a parent directory with the input name (and possibly `--subdir-helper` (default: false)                                                                                                                                                                 |
+| `--subdir-helper` \| `-H`                         | Default helper to apply to subdir name when using `--subdir`.                                                                                                                                                                                                  |
+| `--quiet` \| `-q`                                 | Suppress output logs (Same as `--log-level none`)(default: false)                                                                                                                                                                                              |
+| `--log-level` \| `-l`                             | Determine amount of logs to display. The values are: `none, debug, info, warn, error`. The provided level will display messages of the same level or higher. (default: info)                                                                                   |
+| `--before-write` \| `-B`                          | Run a script before writing the files. This can be a command or a path to a file. A temporary file path will be passed to the given command and the command should return a string for the final output.                                                       |
+| `--after-scaffold` \| `-A`                        | Run a shell command after all files have been written. The command is executed in the output directory (e.g. `--after-scaffold 'npm install'`).                                                                                                                |
+| `--dry-run` \| `-dr`                              | Don't emit files. This is good for testing your scaffolds and making sure they don't fail, without having to write actual file contents or create directories. (default: false)                                                                                |
+| `--version` \| `-v`                               | Display version.                                                                                                                                                                                                                                               |
+
+### Interactive Mode
+
+When running in a terminal (TTY), Simple Scaffold will prompt for any missing required values:
+
+- **Name** — text input if `--name` is not provided
+- **Template key** — selectable list if `--key` is not provided and the config file has multiple
+  templates
+- **Output directory** — text input if `--output` is not provided
+- **Template paths** — comma-separated text input if `--templates` is not provided
+
+In non-interactive environments (CI, piped input), missing values will cause an error instead of
+prompting.
+
+### Template Inputs
+
+Config files can define **inputs** — custom fields that are prompted interactively and injected as
+template data. This is useful for templates that need user-specific values like author name,
+license, or description.
+
+```js
+module.exports = {
+  component: {
+    templates: ["templates/component"],
+    output: "src/components",
+    inputs: {
+      author: { message: "Author name", required: true },
+      license: {
+        type: "select",
+        message: "License",
+        options: ["MIT", "Apache-2.0", "GPL-3.0"],
+      },
+      private: { type: "confirm", message: "Private package?", default: false },
+      port: { type: "number", message: "Dev server port", default: 3000 },
+      description: { message: "Description" },
+    },
+  },
+}
+```
+
+Each input becomes available as a Handlebars variable in your templates (e.g., `{{ author }}`,
+`{{ license }}`).
+
+**Input types:**
+
+| Type      | Description                    | Value type |
+| --------- | ------------------------------ | ---------- |
+| `text`    | Free-form text input (default) | `string`   |
+| `select`  | Choose from a list of options  | `string`   |
+| `confirm` | Yes/no prompt                  | `boolean`  |
+| `number`  | Numeric input                  | `number`   |
+
+- **Required inputs** without a value will be prompted interactively
+- **Select and confirm** inputs are always prompted (unless pre-provided)
+- **Optional text/number inputs** with a `default` will use that value silently
+- All inputs can be pre-provided via `--data` or `-D` to skip the prompt:
+
+```shell
+simple-scaffold -c scaffold.config.js -k component -D author=John -D license=Apache-2.0 MyComponent
+```
 
 ### Before Write option
 
@@ -64,12 +125,64 @@ See
 Node.js API for more details. Instead of returning `undefined` to keep the default behavior, you can
 output `''` for the same effect.
 
+### After Scaffold option
+
+This option runs a shell command after all files have been written. The command is executed in the
+output directory, making it useful for post-scaffolding tasks like installing dependencies or
+initializing a git repo.
+
+```shell
+simple-scaffold -c . --after-scaffold 'npm install'
+simple-scaffold -c . --after-scaffold 'git init && git add .'
+```
+
+In a config file, you can use a function for more control:
+
+```js
+module.exports = {
+  default: {
+    templates: ["templates/app"],
+    output: ".",
+    afterScaffold: async ({ config, files }) => {
+      console.log(`Created ${files.length} files in ${config.output}`)
+      // run any post-processing here
+    },
+  },
+}
+```
+
+The function receives a context with the resolved `config` and an array of `files` (absolute paths)
+that were written.
+
 ## Available Commands:
 
 | Command \| Alias | Description                                                                          |
 | ---------------- | ------------------------------------------------------------------------------------ |
+| `init`           | Initialize a new scaffold config file and example template in the current directory. |
 | `list` \| `ls`   | List all available templates for a given config. See `list -h` for more information. |
 
+### `init`
+
+Creates a scaffold config file and an example template directory to get you started quickly.
+
+```shell
+simple-scaffold init
+```
+
+Options:
+
+| Option             | Description                                                          |
+| ------------------ | -------------------------------------------------------------------- |
+| `--dir` \| `-d`    | Directory to create the config in. Defaults to current directory.    |
+| `--format` \| `-f` | Config format: `js`, `mjs`, or `json`. If omitted, you are prompted. |
+
+The command creates:
+
+- A config file (`scaffold.config.js` by default) with a `default` template key
+- A `templates/default/` directory with an example `{{name}}.md` template
+
+Existing files are never overwritten.
+
 ## Examples:
 
 > See

docs/docs/usage/04-node.md

@@ -7,12 +7,9 @@ title: Node.js Usage
 You can build the scaffold yourself, if you want to create more complex arguments, scaffold groups,
 etc - simply pass a config object to the Scaffold function when you are ready to start.
 
-The config takes similar arguments to the command line. The full type definitions can be found in
-[src/types.ts](https://github.com/chenasraf/simple-scaffold/blob/develop/src/types.ts#L13).
-
-See the full
-[documentation](https://chenasraf.github.io/simple-scaffold/interfaces/ScaffoldConfig.html) for the
-configuration options and their behavior.
+The config takes similar arguments to the command line. See the full
+[API documentation](https://chenasraf.github.io/simple-scaffold/docs/api/interfaces/ScaffoldConfig)
+for all configuration options and their behavior.
 
 ```ts
 interface ScaffoldConfig {
@@ -20,19 +17,35 @@ interface ScaffoldConfig {
   templates: string[]
   output: FileResponse<string>
   subdir?: boolean
-  data?: Record<string, any>
+  data?: Record<string, unknown>
   overwrite?: FileResponse<boolean>
-  quiet?: boolean
-  verbose?: LogLevel
+  logLevel?: LogLevel
   dryRun?: boolean
   helpers?: Record<string, Helper>
   subdirHelper?: DefaultHelpers | string
+  inputs?: Record<string, ScaffoldInput>
   beforeWrite?(
     content: Buffer,
     rawContent: Buffer,
     outputPath: string,
   ): string | Buffer | undefined | Promise<string | Buffer | undefined>
+  afterScaffold?: AfterScaffoldHook
 }
+
+interface ScaffoldInput {
+  type?: "text" | "select" | "confirm" | "number"
+  message?: string
+  required?: boolean
+  default?: string | boolean | number
+  options?: (string | { name: string; value: string })[] // for type: "select"
+}
+
+interface AfterScaffoldContext {
+  config: ScaffoldConfig
+  files: string[] // absolute paths of written files
+}
+
+type AfterScaffoldHook = ((context: AfterScaffoldContext) => void | Promise<void>) | string
 ```
 
 ### Before Write option
@@ -46,6 +59,69 @@ to be used as the file contents.
 Returning `undefined` will keep the file contents as-is, after normal Handlebars.js procesing by
 Simple Scaffold.
 
+### After Scaffold hook
+
+The `afterScaffold` option runs after all files have been written. It receives a context object with
+the resolved config and the list of files that were created.
+
+```typescript
+import Scaffold from "simple-scaffold"
+
+await Scaffold({
+  name: "my-app",
+  templates: ["templates/app"],
+  output: ".",
+  afterScaffold: async ({ config, files }) => {
+    console.log(`Created ${files.length} files`)
+    // e.g. run npm install, git init, open editor, etc.
+  },
+})
+```
+
+You can also pass a shell command string, which will be executed in the output directory:
+
+```typescript
+await Scaffold({
+  name: "my-app",
+  templates: ["templates/app"],
+  output: "my-app",
+  afterScaffold: "npm install && git init",
+})
+```
+
+In dry-run mode, the hook is still called but the `files` array will be empty.
+
+### Inputs
+
+The `inputs` option lets you define fields that will be prompted interactively (when running in a
+TTY) and merged into the template data. This is useful when your templates need user-specific
+values.
+
+```typescript
+import Scaffold from "simple-scaffold"
+
+await Scaffold({
+  name: "component",
+  templates: ["templates/component"],
+  output: "src/components",
+  inputs: {
+    author: { message: "Author name", required: true },
+    license: {
+      type: "select",
+      message: "License",
+      options: ["MIT", "Apache-2.0", "GPL-3.0"],
+    },
+    private: { type: "confirm", message: "Private package?", default: false },
+    port: { type: "number", message: "Dev server port", default: 3000 },
+  },
+})
+// In templates: {{ author }}, {{ license }}
+```
+
+- **Required** inputs are prompted if not already in `data`
+- **Optional** inputs with a `default` are applied silently
+- Pre-providing values in `data` skips the prompt for that input
+
 ## Example
 
 This is an example of loading a complete scaffold via Node.js:
@@ -53,7 +129,7 @@ This is an example of loading a complete scaffold via Node.js:
 ```typescript
 import Scaffold from "simple-scaffold"
 
-const config = {
+await Scaffold({
   name: "component",
   templates: [path.join(__dirname, "scaffolds", "component")],
   output: path.join(__dirname, "src", "components"),
@@ -65,10 +141,12 @@ const config = {
   helpers: {
     twice: (text) => [text, text].join(" "),
   },
+  inputs: {
+    author: { message: "Author name", required: true },
+    license: { message: "License", default: "MIT" },
+  },
   // return a string to replace the final file contents after pre-processing, or `undefined`
   // to keep it as-is
   beforeWrite: (content, rawContent, outputPath) => content.toString().toUpperCase(),
-}
-
-const scaffold = Scaffold(config)
+})
 ```

docs/docs/usage/05-examples.md

@@ -31,7 +31,6 @@ title: Examples
 ### Output
 
 - Output file path:
-
   - With `subdir = false` (default):
 
     ```text

docs/docs/usage/index.md

@@ -1,10 +1,11 @@
 ---
 title: Usage
+sidebar_position: 0
 ---
 
-- [CLI Usage](cli)
+- [Template Files](templates)
 - [Configuration Files](configuration_files)
+- [CLI Usage](cli)
+- [Node.js Usage](node)
 - [Examples](examples)
 - [Migration](migration)
-- [Node.js Usage](node)
-- [Template Files](templates)

docs/docusaurus.config.ts

@@ -19,7 +19,12 @@ const config: Config = {
   projectName: "simple-scaffold", // Usually your repo name.
 
   onBrokenLinks: "warn",
-  onBrokenMarkdownLinks: "warn",
+
+  markdown: {
+    hooks: {
+      onBrokenMarkdownLinks: "warn",
+    },
+  },
 
   // Even if you don't use internationalization, you can use this field to set
   // useful metadata like html lang. For example, if your site is Chinese, you
@@ -47,8 +52,12 @@ const config: Config = {
         categorizeByGroup: false,
         sort: ["visibility"],
         categoryOrder: ["Main", "*"],
-        media: "media",
         entryPointStrategy: "expand",
+        pageTitleTemplates: {
+          index: "{projectName}",
+          member: "`{rawName}`",
+          module: "{name}",
+        },
         validation: {
           invalidLink: true,
         },
@@ -134,8 +143,12 @@ const config: Config = {
           title: "Docs",
           items: [
             {
-              label: "Tutorial",
-              to: "/docs/intro",
+              label: "Usage",
+              to: "/docs/usage",
+            },
+            {
+              label: "API",
+              to: "/docs/api",
             },
           ],
         },

docs/package.json

@@ -15,23 +15,23 @@
     "typecheck": "tsc"
   },
   "dependencies": {
-    "@docusaurus/core": "3.1.1",
-    "@docusaurus/plugin-google-tag-manager": "^3.1.1",
-    "@docusaurus/preset-classic": "3.1.1",
-    "@mdx-js/react": "^3.0.0",
-    "clsx": "^2.1.0",
-    "prism-react-renderer": "^2.3.1",
-    "react": "^18.2.0",
-    "react-dom": "^18.2.0"
+    "@docusaurus/core": "^3.9.2",
+    "@docusaurus/plugin-google-tag-manager": "^3.9.2",
+    "@docusaurus/preset-classic": "^3.9.2",
+    "@mdx-js/react": "^3.1.1",
+    "clsx": "^2.1.1",
+    "prism-react-renderer": "^2.4.1",
+    "react": "^19.2.4",
+    "react-dom": "^19.2.4"
   },
   "devDependencies": {
-    "@docusaurus/module-type-aliases": "3.1.1",
-    "@docusaurus/tsconfig": "3.1.1",
-    "@docusaurus/types": "3.1.1",
-    "docusaurus-plugin-typedoc": "^0.22.0",
-    "typedoc": "^0.25.7",
-    "typedoc-plugin-markdown": "^3.17.1",
-    "typescript": "~5.2.2"
+    "@docusaurus/module-type-aliases": "^3.9.2",
+    "@docusaurus/tsconfig": "^3.9.2",
+    "@docusaurus/types": "^3.9.2",
+    "docusaurus-plugin-typedoc": "^1.4.2",
+    "typedoc": "^0.28.18",
+    "typedoc-plugin-markdown": "^4.11.0",
+    "typescript": "~5.9.3"
   },
   "browserslist": {
     "production": [

docs/sidebars.ts

@@ -1,51 +1,28 @@
 import type { SidebarsConfig } from "@docusaurus/plugin-content-docs"
 
-/**
- * Creating a sidebar enables you to:
- - create an ordered group of docs
- - render a sidebar for each doc of that group
- - provide next/previous navigation
-
- The sidebars can be generated from the filesystem, or explicitly defined here.
-
- Create as many sidebars as you want.
- */
 const sidebars: SidebarsConfig = {
-  // By default, Docusaurus generates a sidebar from the docs folder structure
-  // docs: [{ type: "autogenerated", dirName: "." }],
-  usage: ["usage/index"],
-  api: ["api/index"],
-  docs: [{ type: "autogenerated", dirName: "." }],
-  // docs: [
-  //   {
-  //     type: "category",
-  //     label: "Guides",
-  //     link: {
-  //       type: "generated-index",
-  //       title: "Docusaurus Guides",
-  //       description: "Learn about the most important Docusaurus concepts!",
-  //       slug: "/category/docusaurus-guides",
-  //       keywords: ["guides"],
-  //       image: "/img/docusaurus.png",
-  //     },
-  //     items: ["pages", "docs", "blog", "search"],
-  //   },
-  // ],
-  // usage: [{ type: "autogenerated", dirName: "usage" }],
-  // api: [{ type: "autogenerated", dirName: "api" }],
-
-  // But you can create a sidebar manually
-  /*
-  tutorialSidebar: [
-    'intro',
-    'hello',
+  usage: [{ type: "autogenerated", dirName: "usage" }],
+  api: [
+    { type: "doc", id: "api/index", label: "Overview" },
     {
-      type: 'category',
-      label: 'Tutorial',
-      items: ['tutorial-basics/create-a-document'],
+      type: "category",
+      label: "Functions",
+      items: [{ type: "autogenerated", dirName: "api/functions" }],
+    },
+    {
+      type: "category",
+      label: "Types",
+      items: [
+        { type: "autogenerated", dirName: "api/interfaces" },
+        { type: "autogenerated", dirName: "api/type-aliases" },
+      ],
+    },
+    {
+      type: "category",
+      label: "Variables",
+      items: [{ type: "autogenerated", dirName: "api/variables" }],
     },
   ],
-   */
 }
 
 export default sidebars

jest.config.ts

@@ -1,202 +0,0 @@
-/*
- * For a detailed explanation regarding each configuration property and type check, visit:
- * https://jestjs.io/docs/configuration
- */
-
-export default {
-  // All imported modules in your tests should be mocked automatically
-  // automock: false,
-
-  // Stop running tests after `n` failures
-  // bail: 0,
-
-  // The directory where Jest should store its cached dependency information
-  // cacheDirectory: "/private/var/folders/q9/0mns8fgd00b4t5j5lq2wh2yh0000gn/T/jest_dx",
-
-  // Automatically clear mock calls, instances, contexts and results before every test
-  clearMocks: true,
-
-  // Indicates whether the coverage information should be collected while executing the test
-  collectCoverage: true,
-
-  // An array of glob patterns indicating a set of files for which coverage information should be collected
-  // collectCoverageFrom: undefined,
-
-  // The directory where Jest should output its coverage files
-  coverageDirectory: "coverage",
-
-  // An array of regexp pattern strings used to skip coverage collection
-  coveragePathIgnorePatterns: ["/node_modules/", "scaffold.config.js"],
-
-  // Indicates which provider should be used to instrument code for coverage
-  coverageProvider: "v8",
-
-  // A list of reporter names that Jest uses when writing coverage reports
-  // coverageReporters: [
-  //   "json",
-  //   "text",
-  //   "lcov",
-  //   "clover"
-  // ],
-
-  // An object that configures minimum threshold enforcement for coverage results
-  // coverageThreshold: undefined,
-
-  // A path to a custom dependency extractor
-  // dependencyExtractor: undefined,
-
-  // Make calling deprecated APIs throw helpful error messages
-  // errorOnDeprecated: false,
-
-  // The default configuration for fake timers
-  // fakeTimers: {
-  //   "enableGlobally": false
-  // },
-
-  // Force coverage collection from ignored files using an array of glob patterns
-  // forceCoverageMatch: [],
-
-  // A path to a module which exports an async function that is triggered once before all test suites
-  // globalSetup: undefined,
-
-  // A path to a module which exports an async function that is triggered once after all test suites
-  // globalTeardown: undefined,
-
-  // A set of global variables that need to be available in all test environments
-  // globals: {},
-
-  // The maximum amount of workers used to run your tests. Can be specified as % or a number. E.g. maxWorkers: 10% will use 10% of your CPU amount + 1 as the maximum worker number. maxWorkers: 2 will use a maximum of 2 workers.
-  // maxWorkers: "50%",
-
-  // An array of directory names to be searched recursively up from the requiring module's location
-  // moduleDirectories: [
-  //   "node_modules"
-  // ],
-
-  // An array of file extensions your modules use
-  // moduleFileExtensions: [
-  //   "js",
-  //   "mjs",
-  //   "cjs",
-  //   "jsx",
-  //   "ts",
-  //   "tsx",
-  //   "json",
-  //   "node"
-  // ],
-
-  // A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
-  // moduleNameMapper: {},
-  // moduleNameMapper: {
-  //   "#ansi-styles": "<rootDir>/node_modules/chalk/source/vendor/ansi-styles/index.js",
-  //   "#supports-color": "<rootDir>/node_modules/chalk/source/vendor/supports-color/index.js",
-  // },
-
-  // An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
-  modulePathIgnorePatterns: ["<rootDir>/dist"],
-
-  // Activates notifications for test results
-  // notify: false,
-
-  // An enum that specifies notification mode. Requires { notify: true }
-  // notifyMode: "failure-change",
-
-  // A preset that is used as a base for Jest's configuration
-  preset: "ts-jest",
-
-  // Run tests from one or more projects
-  // projects: undefined,
-
-  // Use this configuration option to add custom reporters to Jest
-  // reporters: undefined,
-
-  // Automatically reset mock state before every test
-  // resetMocks: false,
-
-  // Reset the module registry before running each individual test
-  // resetModules: false,
-
-  // A path to a custom resolver
-  // resolver: undefined,
-
-  // Automatically restore mock state and implementation before every test
-  // restoreMocks: false,
-
-  // The root directory that Jest should scan for tests and modules within
-  // rootDir: undefined,
-
-  // A list of paths to directories that Jest should use to search for files in
-  // roots: [
-  //   "<rootDir>"
-  // ],
-
-  // Allows you to use a custom runner instead of Jest's default test runner
-  // runner: "jest-runner",
-
-  // The paths to modules that run some code to configure or set up the testing environment before each test
-  // setupFiles: [],
-
-  // A list of paths to modules that run some code to configure or set up the testing framework before each test
-  // setupFilesAfterEnv: [],
-
-  // The number of seconds after which a test is considered as slow and reported as such in the results.
-  // slowTestThreshold: 5,
-
-  // A list of paths to snapshot serializer modules Jest should use for snapshot testing
-  // snapshotSerializers: [],
-
-  // The test environment that will be used for testing
-  // testEnvironment: "jest-environment-node",
-
-  // Options that will be passed to the testEnvironment
-  // testEnvironmentOptions: {},
-
-  // Adds a location field to test results
-  // testLocationInResults: false,
-
-  // The glob patterns Jest uses to detect test files
-  // testMatch: [
-  //   "**/__tests__/**/*.[jt]s?(x)",
-  //   "**/?(*.)+(spec|test).[tj]s?(x)"
-  // ],
-
-  // An array of regexp pattern strings that are matched against all test paths, matched tests are skipped
-  // testPathIgnorePatterns: [
-  //   "/node_modules/"
-  // ],
-
-  // The regexp pattern or array of patterns that Jest uses to detect test files
-  // testRegex: [],
-
-  // This option allows the use of a custom results processor
-  // testResultsProcessor: undefined,
-
-  // This option allows use of a custom test runner
-  // testRunner: "jest-circus/runner",
-
-  // A map from regular expressions to paths to transformers
-  // transform: undefined,
-
-  // An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
-  // transformIgnorePatterns: [
-  //   "/node_modules/",
-  //   "\\.pnp\\.[^\\/]+$"
-  // ],
-
-  // transform: {
-  //   "^.+\\.ts?$": "ts-jest",
-  // },
-  // transformIgnorePatterns: ["<rootDir>/node_modules/"],
-
-  // An array of regexp pattern strings that are matched against all modules before the module loader will automatically return a mock for them
-  // unmockedModulePathPatterns: undefined,
-
-  // Indicates whether each individual test should be reported during the run
-  verbose: true,
-
-  // An array of regexp patterns that are matched against all source file paths before re-running tests in watch mode
-  // watchPathIgnorePatterns: [],
-
-  // Whether to use watchman for file crawling
-  // watchman: true,
-}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "simple-scaffold",
-  "version": "2.3.3",
+  "version": "3.1.0",
   "description": "Generate any file structure - from single components to entire app boilerplates, with a single command.",
   "homepage": "https://chenasraf.github.io/simple-scaffold",
   "repository": {
@@ -27,34 +27,56 @@
   ],
   "scripts": {
     "clean": "rimraf dist",
-    "build": "pnpm clean && tsc && chmod -R +x ./dist && cp ./package.json ./README.md ./dist/",
-    "dev": "tsc --watch",
-    "start": "ts-node src/scaffold.ts",
-    "test": "jest",
-    "coverage": "open coverage/lcov-report/index.html",
-    "cmd": "ts-node src/cmd.ts",
+    "build": "pnpm clean && vite build && tsc --emitDeclarationOnly && chmod -R +x ./dist && cp ./package.json ./README.md ./dist/",
+    "dev": "vite build --watch",
+    "start": "vite-node src/scaffold.ts",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "coverage": "vitest run --coverage && open coverage/lcov-report/index.html",
+    "cmd": "vite-node src/cmd.ts",
     "docs:build": "cd docs && pnpm build",
     "docs:watch": "cd docs && pnpm start",
     "audit-fix": "pnpm audit --fix",
-    "ci": "pnpm install --frozen-lockfile"
+    "ci": "pnpm install --frozen-lockfile",
+    "lint": "eslint src/ tests/",
+    "format": "prettier --write .",
+    "lint-staged": "lint-staged",
+    "prepare": "husky"
+  },
+  "lint-staged": {
+    "*.{ts,mts,js,mjs}": [
+      "eslint --fix",
+      "prettier --write"
+    ],
+    "*.{json,md,yml,yaml,css}": [
+      "prettier --write"
+    ]
   },
   "dependencies": {
+    "@inquirer/confirm": "^6.0.10",
+    "@inquirer/input": "^5.0.10",
+    "@inquirer/number": "^4.0.10",
+    "@inquirer/select": "^5.1.2",
     "date-fns": "^4.1.0",
-    "glob": "^11.0.3",
+    "glob": "^13.0.6",
     "handlebars": "^4.7.8",
-    "massarg": "2.0.1"
+    "massarg": "2.1.1",
+    "minimatch": "^10.2.4",
+    "zod": "^4.3.6"
   },
   "devDependencies": {
-    "@eslint/js": "^9.29.0",
-    "@types/jest": "^30.0.0",
-    "@types/mock-fs": "^4.13.4",
-    "@types/node": "^24.0.3",
-    "jest": "^30.0.0",
+    "@eslint/js": "^10.0.1",
+    "@types/node": "^25.5.0",
+    "@vitest/coverage-v8": "^4.1.0",
+    "husky": "^9.1.7",
+    "lint-staged": "^16.4.0",
     "mock-fs": "^5.5.0",
-    "rimraf": "^6.0.1",
-    "ts-jest": "^29.4.0",
-    "ts-node": "^10.9.2",
-    "typescript": "^5.8.3",
-    "typescript-eslint": "^8.34.1"
+    "prettier": "^3.8.1",
+    "rimraf": "^6.1.3",
+    "typescript": "^5.9.3",
+    "typescript-eslint": "^8.57.1",
+    "vite": "^8.0.1",
+    "vite-node": "^6.0.0",
+    "vitest": "^4.1.0"
   }
 }

scaffold.config.cjs

@@ -1,7 +1,7 @@
 // @ts-check
 /** @type {import('./dist').ScaffoldConfigFile} */
-module.exports = (conf) => {
-  console.log("Config:", conf)
+module.exports = () => {
+  // console.log("Config:", conf)
   return {
     default: {
       templates: ["examples/test-input/Component"],

src/before-write.ts

@@ -0,0 +1,86 @@
+import path from "node:path"
+import fs from "node:fs/promises"
+import { exec } from "node:child_process"
+import { LogConfig, LogLevel, ScaffoldConfig } from "./types"
+import { log } from "./logger"
+import { createDirIfNotExists, getUniqueTmpPath } from "./fs-utils"
+
+/**
+ * Wraps a CLI beforeWrite command string into a beforeWrite callback function.
+ * The command receives the processed content via a temp file and can return modified content via stdout.
+ * @internal
+ */
+export function wrapBeforeWrite(
+  config: LogConfig & Pick<ScaffoldConfig, "dryRun">,
+  beforeWrite: string,
+): ScaffoldConfig["beforeWrite"] {
+  return async (content, rawContent, outputFile) => {
+    const tmpDir = path.join(getUniqueTmpPath(), path.basename(outputFile))
+    await createDirIfNotExists(path.dirname(tmpDir), config)
+    const ext = path.extname(outputFile)
+    const rawTmpPath = tmpDir.replace(ext, ".raw" + ext)
+    try {
+      log(config, LogLevel.debug, "Parsing beforeWrite command", beforeWrite)
+      const cmd = await prepareBeforeWriteCmd({
+        beforeWrite,
+        tmpDir,
+        content,
+        rawTmpPath,
+        rawContent,
+      })
+      const result = await new Promise<string | undefined>((resolve, reject) => {
+        log(config, LogLevel.debug, "Running parsed beforeWrite command:", cmd)
+        const proc = exec(cmd)
+        proc.stdout!.on("data", (data) => {
+          if (data.trim()) {
+            resolve(data.toString())
+          } else {
+            resolve(undefined)
+          }
+        })
+        proc.stderr!.on("data", (data) => {
+          reject(data.toString())
+        })
+      })
+      return result
+    } catch (e) {
+      log(config, LogLevel.debug, e)
+      log(config, LogLevel.warning, "Error running beforeWrite command, returning original content")
+      return undefined
+    } finally {
+      await fs.rm(tmpDir, { force: true })
+      await fs.rm(rawTmpPath, { force: true })
+    }
+  }
+}
+
+async function prepareBeforeWriteCmd({
+  beforeWrite,
+  tmpDir,
+  content,
+  rawTmpPath,
+  rawContent,
+}: {
+  beforeWrite: string
+  tmpDir: string
+  content: Buffer
+  rawTmpPath: string
+  rawContent: Buffer
+}): Promise<string> {
+  let cmd: string = ""
+  const pathReg = /\{\{\s*path\s*\}\}/gi
+  const rawPathReg = /\{\{\s*rawpath\s*\}\}/gi
+  if (pathReg.test(beforeWrite)) {
+    await fs.writeFile(tmpDir, content)
+    cmd = beforeWrite.replaceAll(pathReg, tmpDir)
+  }
+  if (rawPathReg.test(beforeWrite)) {
+    await fs.writeFile(rawTmpPath, rawContent)
+    cmd = beforeWrite.replaceAll(rawPathReg, rawTmpPath)
+  }
+  if (!cmd) {
+    await fs.writeFile(tmpDir, content)
+    cmd = [beforeWrite, tmpDir].join(" ")
+  }
+  return cmd
+}

src/cmd.ts

@@ -3,23 +3,24 @@
 import path from "node:path"
 import fs from "node:fs/promises"
 import { massarg } from "massarg"
-import { ListCommandCliOptions, LogLevel, ScaffoldCmdConfig } from "./types"
+import { ListCommandCliOptions, LogLevel, ScaffoldCmdConfig, ScaffoldConfigMap } from "./types"
 import { Scaffold } from "./scaffold"
-import { getConfigFile, parseAppendData, parseConfigFile } from "./config"
+import { findConfigFile, getConfigFile, parseAppendData, parseConfigFile } from "./config"
 import { log } from "./logger"
 import { MassargCommand } from "massarg/command"
 import { getUniqueTmpPath as generateUniqueTmpPath } from "./file"
-import { colorize } from "./utils"
+import { colorize } from "./colors"
+import { promptBeforeConfig, promptAfterConfig, resolveInputs } from "./prompts"
+import { initScaffold } from "./init"
 
 export async function parseCliArgs(args = process.argv.slice(2)) {
-  const isProjectRoot = Boolean(await fs.stat(path.join(__dirname, "package.json")).catch(() => false))
-  const pkgFile = await fs.readFile(path.resolve(__dirname, isProjectRoot ? "." : "..", "package.json"))
+  const isProjectRoot = Boolean(
+    await fs.stat(path.join(__dirname, "package.json")).catch(() => false),
+  )
+  const pkgFile = await fs.readFile(
+    path.resolve(__dirname, isProjectRoot ? "." : "..", "package.json"),
+  )
   const pkg = JSON.parse(pkgFile.toString())
-  const isVersionFlag = args.includes("--version") || args.includes("-v")
-  const isConfigFileProvided = args.includes("--config") || args.includes("-c")
-  const isGitProvided = args.includes("--git") || args.includes("-g")
-  const isConfigProvided = isConfigFileProvided || isGitProvided || isVersionFlag
-
   return massarg<ScaffoldCmdConfig>({
     name: pkg.name,
     description: pkg.description,
@@ -29,18 +30,46 @@ export async function parseCliArgs(args = process.argv.slice(2)) {
         console.log(pkg.version)
         return
       }
-      log(config, LogLevel.info, `Simple Scaffold v${pkg.version}`)
+      log(config, LogLevel.debug, `Simple Scaffold v${pkg.version}`)
       config.tmpDir = generateUniqueTmpPath()
       try {
+        // Auto-detect config file in cwd — but only if the user didn't
+        // explicitly provide templates/output (which signals a one-time run)
+        const isOneTimeRun = config.templates?.length > 0 || config.output
+        if (!config.config && !config.git && !isOneTimeRun) {
+          try {
+            config.config = await findConfigFile(process.cwd())
+            log(config, LogLevel.debug, `Auto-detected config file: ${config.config}`)
+          } catch {
+            // No config file found — that's fine, continue without one
+          }
+        }
+
+        // Load config map early so we can prompt for name and template key
+        const hasConfigSource = Boolean(config.config || config.git)
+        let configMap: ScaffoldConfigMap | undefined
+        if (hasConfigSource) {
+          configMap = await getConfigFile(config)
+        }
+
+        // Phase 1: prompt for name + key (needed before parseConfigFile)
+        config = await promptBeforeConfig(config, configMap)
+
+        // Parse and merge the config file
         log(config, LogLevel.debug, "Parsing config file...", config)
         const parsed = await parseConfigFile(config)
-        await Scaffold(parsed)
+
+        // Phase 2: prompt for anything still missing after config merge
+        const prompted = await promptAfterConfig(parsed)
+
+        const resolved = await resolveInputs(prompted)
+        await Scaffold(resolved)
       } catch (e) {
         const message = "message" in (e as object) ? (e as Error).message : e?.toString()
         log(config, LogLevel.error, message)
       } finally {
         log(config, LogLevel.debug, "Cleaning up temporary files...", config.tmpDir)
-        await fs.rm(config.tmpDir, { recursive: true, force: true })
+        if (config.tmpDir) await fs.rm(config.tmpDir, { recursive: true, force: true })
       }
     })
     .option({
@@ -49,9 +78,8 @@ export async function parseCliArgs(args = process.argv.slice(2)) {
       description:
         "Name to be passed to the generated files. `{{name}}` and other data parameters inside " +
         "contents and file names will be replaced accordingly. You may omit the `--name` or `-n` " +
-        "for this specific option.",
+        "for this specific option. If omitted in an interactive terminal, you will be prompted.",
       isDefault: true,
-      required: !isConfigProvided,
     })
     .option({
       name: "config",
@@ -68,15 +96,15 @@ export async function parseCliArgs(args = process.argv.slice(2)) {
       aliases: ["k"],
       description:
         "Key to load inside the config file. This overwrites the config key provided after the colon in `--config` " +
-        "(e.g. `--config scaffold.cmd.js:component)`",
+        "(e.g. `--config scaffold.cmd.js:component)`. If omitted and multiple templates are available, " +
+        "you will be prompted to select one.",
     })
     .option({
       name: "output",
       aliases: ["o"],
       description:
         "Path to output to. If `--subdir` is enabled, the subdir will be created inside " +
-        "this path. Default is current working directory.",
-      required: !isConfigProvided,
+        "this path. If omitted in an interactive terminal, you will be prompted.",
     })
     .option({
       name: "templates",
@@ -85,8 +113,8 @@ export async function parseCliArgs(args = process.argv.slice(2)) {
       description:
         "Template files to use as input. You may provide multiple files, each of which can be a relative or " +
         "absolute path, " +
-        "or a glob pattern for multiple file matching easily.",
-      required: !isConfigProvided,
+        "or a glob pattern for multiple file matching easily. If omitted in an interactive terminal, " +
+        "you will be prompted for a comma-separated list.",
     })
     .flag({
       name: "overwrite",
@@ -139,7 +167,9 @@ export async function parseCliArgs(args = process.argv.slice(2)) {
       parse: (v) => {
         const val = v.toLowerCase()
         if (!(val in LogLevel)) {
-          throw new Error(`Invalid log level: ${val}, must be one of: ${Object.keys(LogLevel).join(", ")}`)
+          throw new Error(
+            `Invalid log level: ${val}, must be one of: ${Object.keys(LogLevel).join(", ")}`,
+          )
         }
         return val
       },
@@ -152,6 +182,14 @@ export async function parseCliArgs(args = process.argv.slice(2)) {
         " file. A temporary file path will be passed to the given command and the command should " +
         "return a string for the final output.",
     })
+    .option({
+      name: "after-scaffold",
+      aliases: ["A"],
+      description:
+        "Run a shell command after all files have been written. " +
+        "The command is executed in the output directory. " +
+        "For example: `--after-scaffold 'npm install'`",
+    })
     .flag({
       name: "dry-run",
       aliases: ["dr"],
@@ -169,7 +207,8 @@ export async function parseCliArgs(args = process.argv.slice(2)) {
       new MassargCommand<ListCommandCliOptions>({
         name: "list",
         aliases: ["ls"],
-        description: "List all available templates for a given config. See `list -h` for more information.",
+        description:
+          "List all available templates for a given config. See `list -h` for more information.",
         run: async (_config) => {
           const config = {
             templates: [],
@@ -192,14 +231,15 @@ export async function parseCliArgs(args = process.argv.slice(2)) {
             log(config, LogLevel.error, message)
           } finally {
             log(config, LogLevel.debug, "Cleaning up temporary files...", config.tmpDir)
-            await fs.rm(config.tmpDir, { recursive: true, force: true })
+            if (config.tmpDir) await fs.rm(config.tmpDir, { recursive: true, force: true })
           }
         },
       })
         .option({
           name: "config",
           aliases: ["c"],
-          description: "Filename or directory to load config from. Defaults to current working directory.",
+          description:
+            "Filename or directory to load config from. Defaults to current working directory.",
         })
         .option({
           name: "git",
@@ -217,7 +257,9 @@ export async function parseCliArgs(args = process.argv.slice(2)) {
           parse: (v) => {
             const val = v.toLowerCase()
             if (!(val in LogLevel)) {
-              throw new Error(`Invalid log level: ${val}, must be one of: ${Object.keys(LogLevel).join(", ")}`)
+              throw new Error(
+                `Invalid log level: ${val}, must be one of: ${Object.keys(LogLevel).join(", ")}`,
+              )
             }
             return val
           },
@@ -226,6 +268,38 @@ export async function parseCliArgs(args = process.argv.slice(2)) {
           bindOption: true,
         }),
     )
+    .command(
+      new MassargCommand<{ dir?: string; format?: string }>({
+        name: "init",
+        aliases: [],
+        description:
+          "Initialize a new scaffold config file and example template in the current directory.",
+        run: async (config) => {
+          try {
+            await initScaffold({
+              dir: config.dir,
+              format: config.format as "js" | "mjs" | "json" | undefined,
+            })
+          } catch (e) {
+            const message = "message" in (e as object) ? (e as Error).message : e?.toString()
+            console.error(colorize.red(message ?? "Unknown error"))
+          }
+        },
+      })
+        .option({
+          name: "dir",
+          aliases: ["d"],
+          description: "Directory to create the config in. Defaults to current working directory.",
+        })
+        .option({
+          name: "format",
+          aliases: ["f"],
+          description: "Config file format: js, mjs, or json. If omitted, you will be prompted.",
+        })
+        .help({
+          bindOption: true,
+        }),
+    )
     .example({
       description: "Usage with config file",
       input: "simple-scaffold -c scaffold.cmd.js --key component",
@@ -236,7 +310,8 @@ export async function parseCliArgs(args = process.argv.slice(2)) {
     })
     .example({
       description: "Usage with https git URL (for non-GitHub)",
-      input: "simple-scaffold -g https://example.com/user/template.git -c scaffold.cmd.js --key component",
+      input:
+        "simple-scaffold -g https://example.com/user/template.git -c scaffold.cmd.js --key component",
     })
     .example({
       description: "Excluded template key, assumes 'default' key",
@@ -251,7 +326,11 @@ export async function parseCliArgs(args = process.argv.slice(2)) {
       bindOption: true,
       lineLength: 100,
       useGlobalTableColumns: true,
-      usageText: [colorize.yellow`simple-scaffold`, colorize.gray`[options]`, colorize.cyan`<name>`].join(" "),
+      usageText: [
+        colorize.yellow`simple-scaffold`,
+        colorize.gray`[options]`,
+        colorize.cyan`<name>`,
+      ].join(" "),
       optionOptions: {
         displayNegations: true,
       },

src/colors.ts

@@ -0,0 +1,74 @@
+/** ANSI color code mapping for terminal output. */
+const colorMap = {
+  reset: 0,
+  dim: 2,
+  bold: 1,
+  italic: 3,
+  underline: 4,
+  red: 31,
+  green: 32,
+  yellow: 33,
+  blue: 34,
+  magenta: 35,
+  cyan: 36,
+  white: 37,
+  gray: 90,
+} as const
+
+/** Available terminal color names. */
+export type TermColor = keyof typeof colorMap
+
+function _colorize(text: string, color: TermColor): string {
+  const c = colorMap[color]!
+  let r: number
+
+  if (c > 1 && c < 30) {
+    r = c + 20
+  } else if (c === 1) {
+    r = 23
+  } else {
+    r = 0
+  }
+
+  return `\x1b[${c}m${text}\x1b[${r}m`
+}
+
+function isTemplateStringArray(
+  template: TemplateStringsArray | unknown,
+): template is TemplateStringsArray {
+  return Array.isArray(template) && typeof template[0] === "string"
+}
+
+const createColorize =
+  (color: TermColor) =>
+  (template: TemplateStringsArray | unknown, ...params: unknown[]): string => {
+    return isTemplateStringArray(template)
+      ? _colorize(
+          (template as TemplateStringsArray).reduce(
+            (acc, str, i) => acc + str + (params[i] ?? ""),
+            "",
+          ),
+          color,
+        )
+      : _colorize(String(template), color)
+  }
+
+type TemplateStringsFn = ReturnType<typeof createColorize> & ((text: string) => string)
+type TemplateStringsFns = { [key in TermColor]: TemplateStringsFn }
+
+/**
+ * Colorize text for terminal output.
+ *
+ * Can be used as a function: `colorize("text", "red")`
+ * Or via named helpers: `colorize.red("text")` / `colorize.red\`template\``
+ */
+export const colorize: typeof _colorize & TemplateStringsFns = Object.assign(
+  _colorize,
+  Object.entries(colorMap).reduce(
+    (acc, [key]) => {
+      acc[key as TermColor] = createColorize(key as TermColor)
+      return acc
+    },
+    {} as Record<TermColor, TemplateStringsFn>,
+  ),
+)

src/config.ts

@@ -1,9 +1,6 @@
 import path from "node:path"
-import fs from "node:fs/promises"
 import {
   ConfigLoadConfig,
-  FileResponse,
-  FileResponseHandler,
   LogConfig,
   LogLevel,
   RemoteConfigLoadConfig,
@@ -12,35 +9,19 @@ import {
   ScaffoldConfigFile,
   ScaffoldConfigMap,
 } from "./types"
-import { handlebarsParse } from "./parser"
 import { log } from "./logger"
 import { resolve, wrapNoopResolver } from "./utils"
 import { getGitConfig } from "./git"
-import { createDirIfNotExists, getUniqueTmpPath, isDir, pathExists } from "./file"
-import { exec } from "node:child_process"
+import { isDir, pathExists } from "./fs-utils"
+import { wrapBeforeWrite } from "./before-write"
 
-/** @internal */
-export function getOptionValueForFile<T>(
-  config: ScaffoldConfig,
-  filePath: string,
-  fn: FileResponse<T>,
-  defaultValue?: T,
-): T {
-  if (typeof fn !== "function") {
-    return defaultValue ?? (fn as T)
-  }
-  return (fn as FileResponseHandler<T>)(
-    filePath,
-    path.dirname(handlebarsParse(config, filePath, { asPath: true }).toString()),
-    path.basename(handlebarsParse(config, filePath, { asPath: true }).toString()),
-  )
-}
+// Re-export for backward compatibility (tests import from here)
+export { getOptionValueForFile } from "./file"
 
-/** @internal */
+/** Parses CLI append-data syntax (`key=value` or `key:=jsonValue`) into a data object. @internal */
 export function parseAppendData(value: string, options: ScaffoldCmdConfig): unknown {
   const data = options.data ?? {}
   const [key, val] = value.split(/:?=/)
-  // raw
   if (value.includes(":=") && !val.includes(":=")) {
     return { ...data, [key]: JSON.parse(val) }
   }
@@ -48,13 +29,16 @@ export function parseAppendData(value: string, options: ScaffoldCmdConfig): unkn
 }
 
 function isWrappedWithQuotes(string: string): boolean {
-  return (string.startsWith('"') && string.endsWith('"')) || (string.startsWith("'") && string.endsWith("'"))
+  return (
+    (string.startsWith('"') && string.endsWith('"')) ||
+    (string.startsWith("'") && string.endsWith("'"))
+  )
 }
 
-/** @internal */
+/** Loads and resolves a config file (local or remote). @internal */
 export async function getConfigFile(config: ScaffoldCmdConfig): Promise<ScaffoldConfigMap> {
   if (config.git && !config.git.includes("://")) {
-    log(config, LogLevel.info, `Loading config from GitHub ${config.git}`)
+    log(config, LogLevel.debug, `Loading config from GitHub ${config.git}`)
     config.git = githubPartToUrl(config.git)
   }
 
@@ -62,16 +46,19 @@ export async function getConfigFile(config: ScaffoldCmdConfig): Promise<Scaffold
   const configFilename = config.config
   const configPath = isGit ? config.git : configFilename
 
-  log(config, LogLevel.info, `Loading config from file ${configFilename}`)
+  log(config, LogLevel.debug, `Loading config from file ${configFilename}`)
 
   const configPromise = await (isGit
-    ? getRemoteConfig({ git: configPath, config: configFilename, logLevel: config.logLevel, tmpDir: config.tmpDir! })
+    ? getRemoteConfig({
+        git: configPath,
+        config: configFilename,
+        logLevel: config.logLevel,
+        tmpDir: config.tmpDir!,
+      })
     : getLocalConfig({ config: configFilename, logLevel: config.logLevel }))
 
-  // resolve the config
   let configImport = await resolve(configPromise, config)
 
-  // If the config is a function or promise, return the output
   if (typeof configImport.default === "function" || configImport.default instanceof Promise) {
     log(config, LogLevel.debug, "Config is a function or promise, resolving...")
     configImport = await resolve(configImport.default, config)
@@ -79,7 +66,10 @@ export async function getConfigFile(config: ScaffoldCmdConfig): Promise<Scaffold
   return configImport
 }
 
-/** @internal */
+/**
+ * Parses a CLI config into a full ScaffoldConfig by merging CLI args, config file values,
+ * and append-data overrides. @internal
+ */
 export async function parseConfigFile(config: ScaffoldCmdConfig): Promise<ScaffoldConfig> {
   let output: ScaffoldConfig = {
     name: config.name,
@@ -125,8 +115,13 @@ export async function parseConfigFile(config: ScaffoldCmdConfig): Promise<Scaffo
   }
 
   output.data = { ...output.data, ...config.appendData }
-  const cmdBeforeWrite = config.beforeWrite ? wrapBeforeWrite(config, config.beforeWrite) : undefined
+  const cmdBeforeWrite = config.beforeWrite
+    ? wrapBeforeWrite(config, config.beforeWrite)
+    : undefined
   output.beforeWrite = cmdBeforeWrite ?? output.beforeWrite
+  if (config.afterScaffold) {
+    output.afterScaffold = config.afterScaffold
+  }
 
   if (!output.name) {
     throw new Error("simple-scaffold: Missing required option: name")
@@ -136,7 +131,7 @@ export async function parseConfigFile(config: ScaffoldCmdConfig): Promise<Scaffo
   return output
 }
 
-/** @internal */
+/** Converts a GitHub shorthand (user/repo) to a full HTTPS git URL. @internal */
 export function githubPartToUrl(part: string): string {
   const gitUrl = new URL(`https://github.com/${part}`)
   if (!gitUrl.pathname.endsWith(".git")) {
@@ -145,8 +140,10 @@ export function githubPartToUrl(part: string): string {
   return gitUrl.toString()
 }
 
-/** @internal */
-export async function getLocalConfig(config: ConfigLoadConfig & Partial<LogConfig>): Promise<ScaffoldConfigFile> {
+/** Loads a scaffold config from a local file or directory. @internal */
+export async function getLocalConfig(
+  config: ConfigLoadConfig & Partial<LogConfig>,
+): Promise<ScaffoldConfigFile> {
   const { config: configFile, ...logConfig } = config as Required<typeof config>
 
   const absolutePath = path.resolve(process.cwd(), configFile)
@@ -160,21 +157,25 @@ export async function getLocalConfig(config: ConfigLoadConfig & Partial<LogConfi
     if (!exists) {
       throw new Error(`Could not find config file in directory ${absolutePath}`)
     }
-    log(logConfig, LogLevel.info, `Loading config from: ${path.resolve(absolutePath, file)}`)
+    log(logConfig, LogLevel.debug, `Loading config from: ${path.resolve(absolutePath, file)}`)
     return wrapNoopResolver(import(path.resolve(absolutePath, file)))
   }
 
-  log(logConfig, LogLevel.info, `Loading config from: ${absolutePath}`)
+  log(logConfig, LogLevel.debug, `Loading config from: ${absolutePath}`)
   return wrapNoopResolver(import(absolutePath))
 }
 
-/** @internal */
+/** Loads a scaffold config from a remote git repository. @internal */
 export async function getRemoteConfig(
   config: RemoteConfigLoadConfig & Partial<LogConfig>,
 ): Promise<ScaffoldConfigFile> {
   const { config: configFile, git, tmpDir, ...logConfig } = config as Required<typeof config>
 
-  log(logConfig, LogLevel.info, `Loading config from remote ${git}, config file ${configFile || "<auto-detect>"}`)
+  log(
+    logConfig,
+    LogLevel.debug,
+    `Loading config from remote ${git}, config file ${configFile || "<auto-detect>"}`,
+  )
 
   const url = new URL(git!)
   const isHttp = url.protocol === "http:" || url.protocol === "https:"
@@ -187,11 +188,12 @@ export async function getRemoteConfig(
   return getGitConfig(url, configFile, tmpDir, logConfig)
 }
 
-/** @internal */
+/** Searches for a scaffold config file in the given directory, trying known filenames in order. @internal */
 export async function findConfigFile(root: string): Promise<string> {
   const allowed = ["mjs", "cjs", "js", "json"].reduce((acc, ext) => {
     acc.push(`scaffold.config.${ext}`)
     acc.push(`scaffold.${ext}`)
+    acc.push(`.scaffold.${ext}`)
     return acc
   }, [] as string[])
   for (const file of allowed) {
@@ -202,72 +204,3 @@ export async function findConfigFile(root: string): Promise<string> {
   }
   throw new Error(`Could not find config file in git repo`)
 }
-
-function wrapBeforeWrite(
-  config: LogConfig & Pick<ScaffoldConfig, "dryRun">,
-  beforeWrite: string,
-): ScaffoldConfig["beforeWrite"] {
-  return async (content, rawContent, outputFile) => {
-    const tmpDir = path.join(getUniqueTmpPath(), path.basename(outputFile))
-    await createDirIfNotExists(path.dirname(tmpDir), config)
-    const ext = path.extname(outputFile)
-    const rawTmpPath = tmpDir.replace(ext, ".raw" + ext)
-    try {
-      log(config, LogLevel.debug, "Parsing beforeWrite command", beforeWrite)
-      const cmd = await prepareBeforeWriteCmd({ beforeWrite, tmpDir, content, rawTmpPath, rawContent })
-      const result = await new Promise<string | undefined>((resolve, reject) => {
-        log(config, LogLevel.debug, "Running parsed beforeWrite command:", cmd)
-        const proc = exec(cmd)
-        proc.stdout!.on("data", (data) => {
-          if (data.trim()) {
-            resolve(data.toString())
-          } else {
-            resolve(undefined)
-          }
-        })
-        proc.stderr!.on("data", (data) => {
-          reject(data.toString())
-        })
-      })
-      return result
-    } catch (e) {
-      log(config, LogLevel.debug, e)
-      log(config, LogLevel.warning, "Error running beforeWrite command, returning original content")
-      return undefined
-    } finally {
-      await fs.rm(tmpDir, { force: true })
-      await fs.rm(rawTmpPath, { force: true })
-    }
-  }
-}
-
-async function prepareBeforeWriteCmd({
-  beforeWrite,
-  tmpDir,
-  content,
-  rawTmpPath,
-  rawContent,
-}: {
-  beforeWrite: string
-  tmpDir: string
-  content: Buffer
-  rawTmpPath: string
-  rawContent: Buffer
-}): Promise<string> {
-  let cmd: string = ""
-  const pathReg = /\{\{\s*path\s*\}\}/gi
-  const rawPathReg = /\{\{\s*rawpath\s*\}\}/gi
-  if (pathReg.test(beforeWrite)) {
-    await fs.writeFile(tmpDir, content)
-    cmd = beforeWrite.replaceAll(pathReg, tmpDir)
-  }
-  if (rawPathReg.test(beforeWrite)) {
-    await fs.writeFile(rawTmpPath, rawContent)
-    cmd = beforeWrite.replaceAll(rawPathReg, rawTmpPath)
-  }
-  if (!cmd) {
-    await fs.writeFile(tmpDir, content)
-    cmd = [beforeWrite, tmpDir].join(" ")
-  }
-  return cmd
-}

src/file.ts

@@ -1,76 +1,55 @@
-import os from "node:os"
 import path from "node:path"
 import fs from "node:fs/promises"
-import { F_OK } from "node:constants"
-import { LogConfig, LogLevel, ScaffoldConfig } from "./types"
+import { FileResponse, FileResponseHandler, LogLevel, ScaffoldConfig } from "./types"
 import { glob, hasMagic } from "glob"
 import { log } from "./logger"
-import { getOptionValueForFile } from "./config"
 import { handlebarsParse } from "./parser"
 import { handleErr } from "./utils"
+import { createDirIfNotExists, pathExists, isDir } from "./fs-utils"
+import { removeGlob } from "./path-utils"
 
-const { stat, access, mkdir, readFile, writeFile } = fs
+const { readFile, writeFile } = fs
 
-export async function createDirIfNotExists(
-  dir: string,
-  config: LogConfig & Pick<ScaffoldConfig, "dryRun">,
-): Promise<void> {
-  if (config.dryRun) {
-    log(config, LogLevel.info, `Dry Run. Not creating dir ${dir}`)
-    return
-  }
-  const parentDir = path.dirname(dir)
-
-  if (!(await pathExists(parentDir))) {
-    await createDirIfNotExists(parentDir, config)
-  }
-
-  if (!(await pathExists(dir))) {
-    try {
-      log(config, LogLevel.debug, `Creating dir ${dir}`)
-      await mkdir(dir)
-      return
-    } catch (e: unknown) {
-      if (e && (e as NodeJS.ErrnoException).code !== "EEXIST") {
-        throw e
-      }
-      return
-    }
+// Re-export extracted utilities for backward compatibility (tests import from here)
+export { createDirIfNotExists, pathExists, isDir, getUniqueTmpPath } from "./fs-utils"
+export { removeGlob, makeRelativePath, getBasePath } from "./path-utils"
+
+/**
+ * Resolves a config option that may be either a static value or a per-file function.
+ * For function values, the file path is parsed through Handlebars before being passed.
+ * @internal
+ */
+export function getOptionValueForFile<T>(
+  config: ScaffoldConfig,
+  filePath: string,
+  fn: FileResponse<T>,
+  defaultValue?: T,
+): T {
+  if (typeof fn !== "function") {
+    return defaultValue ?? (fn as T)
   }
+  return (fn as FileResponseHandler<T>)(
+    filePath,
+    path.dirname(handlebarsParse(config, filePath, { asPath: true }).toString()),
+    path.basename(handlebarsParse(config, filePath, { asPath: true }).toString()),
+  )
 }
 
-export async function pathExists(filePath: string): Promise<boolean> {
-  try {
-    await access(filePath, F_OK)
-    return true
-  } catch (e: unknown) {
-    if (e && (e as NodeJS.ErrnoException).code === "ENOENT") {
-      return false
-    }
-    throw e
-  }
-}
-
-export async function isDir(path: string): Promise<boolean> {
-  const tplStat = await stat(path)
-  return tplStat.isDirectory()
-}
-
-export function removeGlob(template: string): string {
-  return path.normalize(template.replace(/\*/g, ""))
-}
-
-export function makeRelativePath(str: string): string {
-  return str.startsWith(path.sep) ? str.slice(1) : str
-}
-
-export function getBasePath(relPath: string): string {
-  return path
-    .resolve(process.cwd(), relPath)
-    .replace(process.cwd() + path.sep, "")
-    .replace(process.cwd(), "")
+/** Information about a template glob pattern and how it was resolved. */
+export interface GlobInfo {
+  /** The template path with glob wildcards stripped. */
+  baseTemplatePath: string
+  /** The original template string as provided by the user. */
+  origTemplate: string
+  /** Whether the template is a directory or contains glob patterns. */
+  isDirOrGlob: boolean
+  /** Whether the template contains glob wildcard characters. */
+  isGlob: boolean
+  /** The final resolved template path (with `**\/*` appended for directories). */
+  template: string
 }
 
+/** Expands a list of glob patterns into a flat list of matching file paths. */
 export async function getFileList(config: ScaffoldConfig, templates: string[]): Promise<string[]> {
   log(config, LogLevel.debug, `Getting file list for glob list: ${templates}`)
   return (
@@ -81,30 +60,34 @@ export async function getFileList(config: ScaffoldConfig, templates: string[]):
   ).map(path.normalize)
 }
 
-export interface GlobInfo {
-  nonGlobTemplate: string
-  origTemplate: string
-  isDirOrGlob: boolean
-  isGlob: boolean
-  template: string
-}
+/** Analyzes a template path to determine if it's a glob, directory, or single file. */
+export async function getTemplateGlobInfo(
+  config: ScaffoldConfig,
+  template: string,
+): Promise<GlobInfo> {
+  const _isGlob = hasMagic(template)
+  log(config, LogLevel.debug, "before isDir", "isGlob:", _isGlob, template)
 
-export async function getTemplateGlobInfo(config: ScaffoldConfig, template: string): Promise<GlobInfo> {
-  const isGlob = hasMagic(template)
-  log(config, LogLevel.debug, "before isDir", "isGlob:", isGlob, template)
-  let _template = template
-  let nonGlobTemplate = isGlob ? removeGlob(template) : template
-  nonGlobTemplate = path.normalize(nonGlobTemplate)
-  const isDirOrGlob = isGlob ? true : await isDir(template)
-  const _shouldAddGlob = !isGlob && isDirOrGlob
-  log(config, LogLevel.debug, "after", { isDirOrGlob, _shouldAddGlob })
-  const origTemplate = template
-  if (_shouldAddGlob) {
-    _template = path.join(template, "**", "*")
+  let resolvedTemplate = template
+  let baseTemplatePath = _isGlob ? removeGlob(template) : template
+  baseTemplatePath = path.normalize(baseTemplatePath)
+  const isDirOrGlob = _isGlob ? true : await isDir(template)
+  const shouldAddGlob = !_isGlob && isDirOrGlob
+  log(config, LogLevel.debug, "after", { isDirOrGlob, shouldAddGlob })
+
+  if (shouldAddGlob) {
+    resolvedTemplate = path.join(template, "**", "*")
+  }
+  return {
+    baseTemplatePath,
+    origTemplate: template,
+    isDirOrGlob,
+    isGlob: _isGlob,
+    template: resolvedTemplate,
   }
-  return { nonGlobTemplate, origTemplate, isDirOrGlob, isGlob, template: _template }
 }
 
+/** Complete information about a template file's output destination. */
 export interface OutputFileInfo {
   inputPath: string
   outputPathOpt: string
@@ -113,6 +96,7 @@ export interface OutputFileInfo {
   exists: boolean
 }
 
+/** Computes the full output path and metadata for a single template file. */
 export async function getTemplateFileInfo(
   config: ScaffoldConfig,
   { templatePath, basePath }: { templatePath: string; basePath: string },
@@ -126,6 +110,10 @@ export async function getTemplateFileInfo(
   return { inputPath, outputPathOpt, outputDir, outputPath, exists }
 }
 
+/**
+ * Reads a template file, applies Handlebars parsing, runs the beforeWrite hook,
+ * and writes the result to the output path.
+ */
 export async function copyFileTransformed(
   config: ScaffoldConfig,
   {
@@ -142,27 +130,32 @@ export async function copyFileTransformed(
 ): Promise<void> {
   if (!exists || overwrite) {
     if (exists && overwrite) {
-      log(config, LogLevel.info, `File ${outputPath} exists, overwriting`)
+      log(config, LogLevel.debug, `Overwriting ${outputPath}`)
     }
     log(config, LogLevel.debug, `Processing file ${inputPath}`)
     const templateBuffer = await readFile(inputPath)
     const unprocessedOutputContents = handlebarsParse(config, templateBuffer)
     const finalOutputContents =
-      (await config.beforeWrite?.(unprocessedOutputContents, templateBuffer, outputPath)) ?? unprocessedOutputContents
+      (await config.beforeWrite?.(unprocessedOutputContents, templateBuffer, outputPath)) ??
+      unprocessedOutputContents
 
     if (!config.dryRun) {
       await writeFile(outputPath, finalOutputContents)
     } else {
-      log(config, LogLevel.info, "Dry Run. Output should be:")
-      log(config, LogLevel.info, finalOutputContents.toString())
+      log(config, LogLevel.debug, "Dry run — output would be:")
+      log(config, LogLevel.debug, finalOutputContents.toString())
     }
   } else if (exists) {
-    log(config, LogLevel.info, `File ${outputPath} already exists, skipping`)
+    log(config, LogLevel.debug, `Skipped ${outputPath} (already exists)`)
   }
-  log(config, LogLevel.info, "Done.")
 }
 
-export function getOutputDir(config: ScaffoldConfig, outputPathOpt: string, basePath: string): string {
+/** Computes the output directory for a file, combining the output path, base path, and optional subdir. */
+export function getOutputDir(
+  config: ScaffoldConfig,
+  outputPathOpt: string,
+  basePath: string,
+): string {
   return path.resolve(
     process.cwd(),
     ...([
@@ -177,15 +170,23 @@ export function getOutputDir(config: ScaffoldConfig, outputPathOpt: string, base
   )
 }
 
+/**
+ * Processes a single template file: resolves output paths, creates directories,
+ * and writes the transformed output.
+ * Returns the output path if the file was written, or null if skipped.
+ */
 export async function handleTemplateFile(
   config: ScaffoldConfig,
   { templatePath, basePath }: { templatePath: string; basePath: string },
-): Promise<void> {
+): Promise<string | null> {
   try {
-    const { inputPath, outputPathOpt, outputDir, outputPath, exists } = await getTemplateFileInfo(config, {
-      templatePath,
-      basePath,
-    })
+    const { inputPath, outputPathOpt, outputDir, outputPath, exists } = await getTemplateFileInfo(
+      config,
+      {
+        templatePath,
+        basePath,
+      },
+    )
     const overwrite = getOptionValueForFile(config, inputPath, config.overwrite ?? false)
 
     log(
@@ -202,15 +203,12 @@ export async function handleTemplateFile(
 
     await createDirIfNotExists(path.dirname(outputPath), config)
 
-    log(config, LogLevel.info, `Writing to ${outputPath}`)
+    const shouldWrite = (!exists || overwrite) && !config.dryRun
+    log(config, LogLevel.debug, `Writing to ${outputPath}`)
     await copyFileTransformed(config, { exists, overwrite, outputPath, inputPath })
+    return shouldWrite ? outputPath : null
   } catch (e: unknown) {
     handleErr(e as NodeJS.ErrnoException)
     throw e
   }
 }
-
-/** @internal */
-export function getUniqueTmpPath(): string {
-  return path.resolve(os.tmpdir(), `scaffold-config-${Date.now()}-${Math.random().toString(36).slice(2)}`)
-}

src/fs-utils.ts

@@ -0,0 +1,64 @@
+import os from "node:os"
+import path from "node:path"
+import fs from "node:fs/promises"
+import { F_OK } from "node:constants"
+import { LogConfig, LogLevel, ScaffoldConfig } from "./types"
+import { log } from "./logger"
+
+const { stat, access, mkdir } = fs
+
+/** Recursively creates a directory and its parents if they don't exist. */
+export async function createDirIfNotExists(
+  dir: string,
+  config: LogConfig & Pick<ScaffoldConfig, "dryRun">,
+): Promise<void> {
+  if (config.dryRun) {
+    log(config, LogLevel.info, `Dry Run. Not creating dir ${dir}`)
+    return
+  }
+  const parentDir = path.dirname(dir)
+
+  if (!(await pathExists(parentDir))) {
+    await createDirIfNotExists(parentDir, config)
+  }
+
+  if (!(await pathExists(dir))) {
+    try {
+      log(config, LogLevel.debug, `Creating dir ${dir}`)
+      await mkdir(dir)
+      return
+    } catch (e: unknown) {
+      if (e && (e as NodeJS.ErrnoException).code !== "EEXIST") {
+        throw e
+      }
+      return
+    }
+  }
+}
+
+/** Checks whether a file or directory exists at the given path. */
+export async function pathExists(filePath: string): Promise<boolean> {
+  try {
+    await access(filePath, F_OK)
+    return true
+  } catch (e: unknown) {
+    if (e && (e as NodeJS.ErrnoException).code === "ENOENT") {
+      return false
+    }
+    throw e
+  }
+}
+
+/** Returns true if the given path is a directory. */
+export async function isDir(dirPath: string): Promise<boolean> {
+  const tplStat = await stat(dirPath)
+  return tplStat.isDirectory()
+}
+
+/** Generates a unique temporary directory path for scaffold operations. @internal */
+export function getUniqueTmpPath(): string {
+  return path.resolve(
+    os.tmpdir(),
+    `scaffold-config-${Date.now()}-${Math.random().toString(36).slice(2)}`,
+  )
+}

src/git.ts

@@ -13,7 +13,7 @@ export async function getGitConfig(
 ): Promise<AsyncResolver<ScaffoldCmdConfig, ScaffoldConfigMap>> {
   const repoUrl = `${url.protocol}//${url.host}${url.pathname}`
 
-  log(logConfig, LogLevel.info, `Cloning git repo ${repoUrl}`)
+  log(logConfig, LogLevel.debug, `Cloning git repo ${repoUrl}`)
 
   return new Promise((res, reject) => {
     log(logConfig, LogLevel.debug, `Cloning git repo to ${tmpPath}`)
@@ -43,13 +43,16 @@ export async function loadGitConfig({
   file: string
   tmpPath: string
 }): Promise<AsyncResolver<ScaffoldCmdConfig, ScaffoldConfigMap>> {
-  log(logConfig, LogLevel.info, `Loading config from git repo: ${repoUrl}`)
+  log(logConfig, LogLevel.debug, `Loading config from git repo: ${repoUrl}`)
   const filename = file || (await findConfigFile(tmpPath))
   const absolutePath = path.resolve(tmpPath, filename)
   log(logConfig, LogLevel.debug, `Resolving config file: ${absolutePath}`)
-  const loadedConfig = await resolve(async () => (await import(absolutePath)).default as ScaffoldConfigMap, logConfig)
+  const loadedConfig = await resolve(
+    async () => (await import(absolutePath)).default as ScaffoldConfigMap,
+    logConfig,
+  )
 
-  log(logConfig, LogLevel.info, `Loaded config from git`)
+  log(logConfig, LogLevel.debug, `Loaded config from git`)
   log(logConfig, LogLevel.debug, `Raw config:`, loadedConfig)
   const fixedConfig: ScaffoldConfigMap = {}
   for (const [k, v] of Object.entries(loadedConfig)) {

src/ignore.ts

@@ -0,0 +1,67 @@
+import path from "node:path"
+import fs from "node:fs/promises"
+import { minimatch } from "minimatch"
+import { pathExists } from "./fs-utils"
+
+const IGNORE_FILENAME = ".scaffoldignore"
+
+/**
+ * Reads a `.scaffoldignore` file from the given directory and returns
+ * the parsed patterns for filtering.
+ *
+ * Lines starting with `#` are comments. Empty lines are skipped.
+ *
+ * @param dir The directory to search for `.scaffoldignore`
+ * @returns Array of glob patterns to ignore
+ */
+export async function loadIgnorePatterns(dir: string): Promise<string[]> {
+  const ignorePath = path.resolve(dir, IGNORE_FILENAME)
+
+  if (!(await pathExists(ignorePath))) {
+    return []
+  }
+
+  const content = await fs.readFile(ignorePath, "utf-8")
+  return parseIgnoreFile(content)
+}
+
+/**
+ * Parses the contents of a `.scaffoldignore` file into glob patterns.
+ * @internal
+ */
+export function parseIgnoreFile(content: string): string[] {
+  return content
+    .split("\n")
+    .map((line) => line.trim())
+    .filter((line) => line.length > 0 && !line.startsWith("#"))
+}
+
+/**
+ * Filters a list of file paths, removing any that match the ignore patterns.
+ * Patterns are matched against the relative path from baseDir.
+ * Also always excludes `.scaffoldignore` itself.
+ */
+export function filterIgnoredFiles(
+  files: string[],
+  ignorePatterns: string[],
+  baseDir: string,
+): string[] {
+  return files.filter((file) => {
+    const basename = path.basename(file)
+    if (basename === IGNORE_FILENAME) {
+      return false
+    }
+
+    const relPath = path.relative(baseDir, file)
+
+    for (const pattern of ignorePatterns) {
+      if (
+        minimatch(relPath, pattern, { dot: true }) ||
+        minimatch(basename, pattern, { dot: true })
+      ) {
+        return false
+      }
+    }
+    return true
+  })
+}

src/index.ts

@@ -1,5 +1,6 @@
 export * from "./scaffold"
 export * from "./types"
+export { validateConfig, assertConfigValid, scaffoldConfigSchema } from "./validate"
 import Scaffold from "./scaffold"
 
 export default Scaffold

src/init.ts

@@ -0,0 +1,111 @@
+import path from "node:path"
+import fs from "node:fs/promises"
+import select from "@inquirer/select"
+import { colorize } from "./colors"
+import { pathExists } from "./fs-utils"
+
+const CONFIG_EXTENSIONS = {
+  js: "scaffold.config.js",
+  mjs: "scaffold.config.mjs",
+  json: "scaffold.config.json",
+} as const
+
+type ConfigFormat = keyof typeof CONFIG_EXTENSIONS
+
+const CONFIG_TEMPLATES: Record<ConfigFormat, string> = {
+  js: `/** @type {import('simple-scaffold').ScaffoldConfigMap} */
+module.exports = {
+  default: {
+    templates: ["templates/default"],
+    output: ".",
+    // inputs: {
+    //   author: { message: "Author name", required: true },
+    //   license: { message: "License", default: "MIT" },
+    // },
+  },
+}
+`,
+  mjs: `/** @type {import('simple-scaffold').ScaffoldConfigMap} */
+export default {
+  default: {
+    templates: ["templates/default"],
+    output: ".",
+    // inputs: {
+    //   author: { message: "Author name", required: true },
+    //   license: { message: "License", default: "MIT" },
+    // },
+  },
+}
+`,
+  json: `{
+  "default": {
+    "templates": ["templates/default"],
+    "output": "."
+  }
+}
+`,
+}
+
+const EXAMPLE_TEMPLATE_CONTENT = `# {{ name }}
+
+Created by Simple Scaffold.
+
+{{#if description}}{{ description }}{{/if}}
+`
+
+export interface InitOptions {
+  /** Working directory to create the config in. Defaults to cwd. */
+  dir?: string
+  /** Config format to use. If not provided, the user is prompted. */
+  format?: ConfigFormat
+  /** Whether to create an example template directory. Defaults to true. */
+  createExample?: boolean
+}
+
+/**
+ * Initializes a new Simple Scaffold project by creating a config file
+ * and an optional example template directory.
+ */
+export async function initScaffold(options: InitOptions = {}): Promise<void> {
+  const dir = options.dir ?? process.cwd()
+
+  const format =
+    options.format ??
+    (await select<ConfigFormat>({
+      message: colorize.cyan("Config file format:"),
+      choices: [
+        { name: "JavaScript (CommonJS)", value: "js" },
+        { name: "JavaScript (ESM)", value: "mjs" },
+        { name: "JSON", value: "json" },
+      ],
+    }))
+
+  const filename = CONFIG_EXTENSIONS[format]
+  const configPath = path.resolve(dir, filename)
+
+  if (await pathExists(configPath)) {
+    console.log(colorize.yellow(`${filename} already exists, skipping config creation.`))
+  } else {
+    await fs.writeFile(configPath, CONFIG_TEMPLATES[format])
+    console.log(colorize.green(`Created ${filename}`))
+  }
+
+  const createExample = options.createExample ?? true
+  if (createExample) {
+    const templateDir = path.resolve(dir, "templates", "default")
+    const templateFile = path.join(templateDir, "{{name}}.md")
+
+    if (await pathExists(templateDir)) {
+      console.log(colorize.yellow("templates/default/ already exists, skipping example template."))
+    } else {
+      await fs.mkdir(templateDir, { recursive: true })
+      await fs.writeFile(templateFile, EXAMPLE_TEMPLATE_CONTENT)
+      console.log(colorize.green("Created templates/default/{{name}}.md"))
+    }
+  }
+
+  console.log()
+  console.log(colorize.dim("Get started:"))
+  console.log(colorize.dim(`  npx simple-scaffold MyProject`))
+  console.log()
+}

src/logger.ts

@@ -1,30 +1,38 @@
 import util from "util"
+import path from "node:path"
 import { LogConfig, LogLevel, ScaffoldConfig } from "./types"
-import { colorize, TermColor } from "./utils"
+import { colorize, TermColor } from "./colors"
 
+/** Priority ordering for log levels (higher = more severe). */
+const LOG_PRIORITY: Record<LogLevel, number> = {
+  [LogLevel.none]: 0,
+  [LogLevel.debug]: 1,
+  [LogLevel.info]: 2,
+  [LogLevel.warning]: 3,
+  [LogLevel.error]: 4,
+}
+
+/** Maps each log level to a terminal color. */
+const LOG_LEVEL_COLOR: Record<LogLevel, TermColor> = {
+  [LogLevel.none]: "reset",
+  [LogLevel.debug]: "dim",
+  [LogLevel.info]: "reset",
+  [LogLevel.warning]: "yellow",
+  [LogLevel.error]: "red",
+}
+
+/** Logs a message at the given level, respecting the configured log level filter. */
 export function log(config: LogConfig, level: LogLevel, ...obj: unknown[]): void {
-  const priority: Record<LogLevel, number> = {
-    [LogLevel.none]: 0,
-    [LogLevel.debug]: 1,
-    [LogLevel.info]: 2,
-    [LogLevel.warning]: 3,
-    [LogLevel.error]: 4,
-  }
-
-  if (config.logLevel === LogLevel.none || priority[level] < priority[config.logLevel ?? LogLevel.info]) {
+  if (
+    config.logLevel === LogLevel.none ||
+    LOG_PRIORITY[level] < LOG_PRIORITY[config.logLevel ?? LogLevel.info]
+  ) {
     return
   }
 
-  const levelColor: Record<keyof typeof LogLevel, TermColor> = {
-    [LogLevel.none]: "reset",
-    [LogLevel.debug]: "blue",
-    [LogLevel.info]: "dim",
-    [LogLevel.warning]: "yellow",
-    [LogLevel.error]: "red",
-  }
-
-  const colorFn = colorize[levelColor[level]]
-  const key: "log" | "warn" | "error" = level === LogLevel.error ? "error" : level === LogLevel.warning ? "warn" : "log"
+  const colorFn = colorize[LOG_LEVEL_COLOR[level]]
+  const key: "log" | "warn" | "error" =
+    level === LogLevel.error ? "error" : level === LogLevel.warning ? "warn" : "log"
   const logFn: (..._args: unknown[]) => void = console[key]
   logFn(
     ...obj.map((i) =>
@@ -37,6 +45,10 @@ export function log(config: LogConfig, level: LogLevel, ...obj: unknown[]): void
   )
 }
 
+/**
+ * Logs detailed file processing information at debug level.
+ * @deprecated Use `log(config, LogLevel.debug, data)` directly instead.
+ */
 export function logInputFile(
   config: ScaffoldConfig,
   data: {
@@ -53,6 +65,7 @@ export function logInputFile(
   log(config, LogLevel.debug, data)
 }
 
+/** Logs the full scaffold configuration at debug level. */
 export function logInitStep(config: ScaffoldConfig): void {
   log(config, LogLevel.debug, "Full config:", {
     name: config.name,
@@ -67,5 +80,56 @@ export function logInitStep(config: ScaffoldConfig): void {
     dryRun: config.dryRun,
     beforeWrite: config.beforeWrite,
   } as Record<keyof ScaffoldConfig, unknown>)
-  log(config, LogLevel.info, "Data:", config.data)
+}
+
+/**
+ * Logs a tree of created files, grouped by directory.
+ */
+export function logFileTree(config: LogConfig, files: string[]): void {
+  if (files.length === 0) return
+
+  // Find common prefix to make paths relative
+  const commonDir = files.reduce((prefix, file) => {
+    while (!file.startsWith(prefix)) {
+      prefix = path.dirname(prefix)
+    }
+    return prefix
+  }, path.dirname(files[0]))
+
+  log(config, LogLevel.info, "")
+  log(config, LogLevel.info, colorize.bold(`📁 ${commonDir}`))
+
+  const relPaths = files.map((f) => path.relative(commonDir, f)).sort()
+
+  for (let i = 0; i < relPaths.length; i++) {
+    const isLast = i === relPaths.length - 1
+    const prefix = isLast ? "└── " : "├── "
+    log(config, LogLevel.info, colorize.dim(prefix) + relPaths[i])
+  }
+}
+
+/**
+ * Logs a final summary line with file count and elapsed time.
+ */
+export function logSummary(
+  config: LogConfig,
+  fileCount: number,
+  elapsedMs: number,
+  dryRun?: boolean,
+): void {
+  const timeStr =
+    elapsedMs < 1000 ? `${Math.round(elapsedMs)}ms` : `${(elapsedMs / 1000).toFixed(2)}s`
+
+  log(config, LogLevel.info, "")
+  if (dryRun) {
+    log(
+      config,
+      LogLevel.info,
+      colorize.yellow(`🏜️  Dry run complete — ${fileCount} file(s) would be created (${timeStr})`),
+    )
+  } else if (fileCount === 0) {
+    log(config, LogLevel.info, colorize.yellow(`⚠️  No files created (${timeStr})`))
+  } else {
+    log(config, LogLevel.info, colorize.green(`✅ Created ${fileCount} file(s) in ${timeStr}`))
+  }
 }

src/parser.ts

@@ -1,17 +1,10 @@
 import path from "node:path"
 import { DefaultHelpers, Helper, LogLevel, ScaffoldConfig } from "./types"
 import Handlebars from "handlebars"
-import dtAdd from "date-fns/add"
-import dtFormat from "date-fns/format"
-import dtParseISO from "date-fns/parseISO"
+import { add, format, parseISO, type Duration } from "date-fns"
 import { log } from "./logger"
-import { Duration } from "date-fns"
 
-const dateFns = {
-  add: dtAdd.add,
-  format: dtFormat.format,
-  parseISO: dtParseISO.parseISO,
-}
+const dateFns = { add, format, parseISO }
 
 export const defaultHelpers: Record<DefaultHelpers, Helper> = {
   camelCase,
@@ -27,7 +20,12 @@ export const defaultHelpers: Record<DefaultHelpers, Helper> = {
 }
 
 function _dateHelper(date: Date, formatString: string): string
-function _dateHelper(date: Date, formatString: string, durationDifference: number, durationType: keyof Duration): string
+function _dateHelper(
+  date: Date,
+  formatString: string,
+  durationDifference: number,
+  durationType: keyof Duration,
+): string
 function _dateHelper(
   date: Date,
   formatString: string,
@@ -41,8 +39,16 @@ function _dateHelper(
 }
 
 export function nowHelper(formatString: string): string
-export function nowHelper(formatString: string, durationDifference: number, durationType: keyof Duration): string
-export function nowHelper(formatString: string, durationDifference?: number, durationType?: keyof Duration): string {
+export function nowHelper(
+  formatString: string,
+  durationDifference: number,
+  durationType: keyof Duration,
+): string
+export function nowHelper(
+  formatString: string,
+  durationDifference?: number,
+  durationType?: keyof Duration,
+): string {
   return _dateHelper(new Date(), formatString, durationDifference!, durationType!)
 }
 
@@ -62,9 +68,16 @@ export function dateHelper(
   return _dateHelper(dateFns.parseISO(date), formatString, durationDifference!, durationType!)
 }
 
-// splits by either non-alpha character or capital letter
+// splits by either non-alphanumeric character or capital letter boundaries
 function toWordParts(string: string): string[] {
-  return string.split(/(?=[A-Z])|[^a-zA-Z]/).filter((s) => s.length > 0)
+  // First split on non-alphanumeric characters
+  return string
+    .split(/[^a-zA-Z0-9]/)
+    .flatMap((segment) =>
+      // Then split camelCase/PascalCase boundaries, handling consecutive uppercase (e.g. "HTMLParser" -> "HTML", "Parser")
+      segment.split(/(?<=[a-z0-9])(?=[A-Z])|(?<=[A-Z])(?=[A-Z][a-z])/),
+    )
+    .filter((s) => s.length > 0)
 }
 
 function camelCase(s: string): string {
@@ -121,7 +134,7 @@ export function handlebarsParse(
     return Buffer.from(outputContents)
   } catch (e) {
     log(config, LogLevel.debug, e)
-    log(config, LogLevel.info, "Couldn't parse file with handlebars, returning original content")
+    log(config, LogLevel.debug, "Couldn't parse file with handlebars, returning original content")
     return Buffer.from(templateBuffer)
   }
 }

src/path-utils.ts

@@ -0,0 +1,19 @@
+import path from "node:path"
+
+/** Strips glob wildcard characters from a template path. */
+export function removeGlob(template: string): string {
+  return path.normalize(template.replace(/\*/g, ""))
+}
+
+/** Removes a leading path separator, making the path relative. */
+export function makeRelativePath(str: string): string {
+  return str.startsWith(path.sep) ? str.slice(1) : str
+}
+
+/** Computes a base path relative to the current working directory. */
+export function getBasePath(relPath: string): string {
+  return path
+    .resolve(process.cwd(), relPath)
+    .replace(process.cwd() + path.sep, "")
+    .replace(process.cwd(), "")
+}

src/prompts.ts

@@ -0,0 +1,253 @@
+import input from "@inquirer/input"
+import select from "@inquirer/select"
+import confirm from "@inquirer/confirm"
+import number from "@inquirer/number"
+import { colorize } from "./colors"
+import {
+  ScaffoldCmdConfig,
+  ScaffoldConfig,
+  ScaffoldConfigMap,
+  ScaffoldInput,
+  ScaffoldInputType,
+} from "./types"
+
+/** Prompts the user for a scaffold name. */
+export async function promptForName(): Promise<string> {
+  return input({
+    message: colorize.cyan("Scaffold name:"),
+    required: true,
+    validate: (value) => {
+      if (!value.trim()) return "Name cannot be empty"
+      return true
+    },
+  })
+}
+
+/** Prompts the user to select a template key from the available config keys. */
+export async function promptForTemplateKey(configMap: ScaffoldConfigMap): Promise<string> {
+  const keys = Object.keys(configMap)
+  if (keys.length === 0) {
+    throw new Error("No templates found in config file")
+  }
+  if (keys.length === 1) {
+    return keys[0]
+  }
+  return select({
+    message: colorize.cyan("Select a template:"),
+    choices: keys.map((key) => ({
+      name: key,
+      value: key,
+    })),
+  })
+}
+
+/** Prompts the user for an output directory path. */
+export async function promptForOutput(): Promise<string> {
+  return input({
+    message: colorize.cyan("Output directory:"),
+    required: true,
+    default: ".",
+    validate: (value) => {
+      if (!value.trim()) return "Output directory cannot be empty"
+      return true
+    },
+  })
+}
+
+/** Prompts the user for template paths (comma-separated). */
+export async function promptForTemplates(): Promise<string[]> {
+  const value = await input({
+    message: colorize.cyan("Template paths (comma-separated):"),
+    required: true,
+    validate: (value) => {
+      if (!value.trim()) return "At least one template path is required"
+      return true
+    },
+  })
+  return value
+    .split(",")
+    .map((t) => t.trim())
+    .filter(Boolean)
+}
+
+/** Prompts for a single input based on its type. */
+async function promptSingleInput(
+  key: string,
+  def: ScaffoldInput,
+): Promise<string | boolean | number | undefined> {
+  const type: ScaffoldInputType = def.type ?? "text"
+  const message = colorize.cyan(def.message ?? `${key}:`)
+
+  switch (type) {
+    case "text":
+      return input({
+        message,
+        required: def.required,
+        default: def.default as string | undefined,
+        validate: def.required
+          ? (value) => {
+              if (!value.trim()) return `${key} is required`
+              return true
+            }
+          : undefined,
+      })
+
+    case "select": {
+      const choices = (def.options ?? []).map((opt) =>
+        typeof opt === "string" ? { name: opt, value: opt } : opt,
+      )
+      if (choices.length === 0) {
+        throw new Error(`Input "${key}" has type "select" but no options defined`)
+      }
+      return select({
+        message,
+        choices,
+        default: def.default as string | undefined,
+      })
+    }
+
+    case "confirm":
+      return confirm({
+        message,
+        default: (def.default as boolean | undefined) ?? false,
+      })
+
+    case "number":
+      return (
+        (await number({
+          message,
+          required: def.required,
+          default: def.default as number | undefined,
+        })) ?? def.default
+      )
+  }
+}
+
+/**
+ * Prompts the user for any required scaffold inputs that are not already provided in data.
+ * Also applies default values for optional inputs that have one.
+ * Returns the merged data object.
+ */
+export async function promptForInputs(
+  inputs: Record<string, ScaffoldInput>,
+  existingData: Record<string, unknown> = {},
+): Promise<Record<string, unknown>> {
+  const data = { ...existingData }
+
+  for (const [key, def] of Object.entries(inputs)) {
+    // Skip if already provided via data/CLI
+    if (key in data && data[key] !== undefined && data[key] !== "") {
+      continue
+    }
+
+    if (def.required || def.type === "select" || def.type === "confirm") {
+      data[key] = await promptSingleInput(key, def)
+    } else if (def.default !== undefined && !(key in data)) {
+      data[key] = def.default
+    }
+  }
+
+  return data
+}
+
+/** Returns true if the process is running in an interactive terminal. */
+export function isInteractive(): boolean {
+  return Boolean(process.stdin.isTTY)
+}
+
+/**
+ * Prompts for name and template key before the config file is parsed.
+ * These are needed by parseConfigFile to know which template to load.
+ */
+export async function promptBeforeConfig(
+  config: ScaffoldCmdConfig,
+  configMap?: ScaffoldConfigMap,
+): Promise<ScaffoldCmdConfig> {
+  if (!isInteractive()) {
+    return config
+  }
+
+  if (!config.name) {
+    config.name = await promptForName()
+  }
+
+  if (configMap && !config.key) {
+    const keys = Object.keys(configMap)
+    if (keys.length > 1) {
+      config.key = await promptForTemplateKey(configMap)
+    }
+  }
+
+  return config
+}
+
+/**
+ * Prompts for any values still missing after the config file has been parsed.
+ * Only prompts in interactive mode.
+ */
+export async function promptAfterConfig(config: ScaffoldConfig): Promise<ScaffoldConfig> {
+  if (!isInteractive()) {
+    return config
+  }
+
+  if (!config.output || (typeof config.output === "string" && !config.output)) {
+    config.output = await promptForOutput()
+  }
+
+  if (!config.templates || config.templates.length === 0) {
+    config.templates = await promptForTemplates()
+  }
+
+  return config
+}
+
+/**
+ * @deprecated Use {@link promptBeforeConfig} and {@link promptAfterConfig} instead.
+ */
+export async function promptForMissingConfig(
+  config: ScaffoldCmdConfig,
+  configMap?: ScaffoldConfigMap,
+): Promise<ScaffoldCmdConfig> {
+  const afterPre = await promptBeforeConfig(config, configMap)
+
+  if (!isInteractive()) {
+    return afterPre
+  }
+
+  if (!afterPre.output) {
+    afterPre.output = await promptForOutput()
+  }
+
+  if (!afterPre.templates || afterPre.templates.length === 0) {
+    afterPre.templates = await promptForTemplates()
+  }
+
+  return afterPre
+}
+
+/**
+ * Prompts for any required inputs defined in the scaffold config and merges them into data.
+ * Only prompts in interactive mode; in non-interactive mode, only applies defaults.
+ */
+export async function resolveInputs(config: ScaffoldConfig): Promise<ScaffoldConfig> {
+  if (!config.inputs) {
+    return config
+  }
+
+  const interactive = isInteractive()
+
+  if (interactive) {
+    config.data = await promptForInputs(config.inputs, config.data)
+  } else {
+    // Non-interactive: only apply defaults
+    const data = { ...config.data }
+    for (const [key, def] of Object.entries(config.inputs)) {
+      if (def.default !== undefined && !(key in data)) {
+        data[key] = def.default
+      }
+    }
+    config.data = data
+  }
+
+  return config
+}

src/scaffold.ts

@@ -6,22 +6,18 @@
  */
 import path from "node:path"
 import os from "node:os"
+import { exec } from "node:child_process"
 
 import { handleErr, resolve } from "./utils"
-import {
-  isDir,
-  removeGlob,
-  makeRelativePath,
-  getTemplateGlobInfo,
-  getFileList,
-  getBasePath,
-  handleTemplateFile,
-  GlobInfo,
-} from "./file"
+import { isDir, getTemplateGlobInfo, getFileList, handleTemplateFile, GlobInfo } from "./file"
+import { removeGlob, makeRelativePath, getBasePath } from "./path-utils"
 import { LogLevel, MinimalConfig, Resolver, ScaffoldCmdConfig, ScaffoldConfig } from "./types"
 import { registerHelpers } from "./parser"
-import { log, logInitStep, logInputFile } from "./logger"
+import { log, logInitStep, logFileTree, logSummary } from "./logger"
 import { parseConfigFile } from "./config"
+import { resolveInputs } from "./prompts"
+import { loadIgnorePatterns, filterIgnoredFiles } from "./ignore"
+import { assertConfigValid } from "./validate"
 
 /**
  * Create a scaffold using given `options`.
@@ -58,53 +54,135 @@ import { parseConfigFile } from "./config"
 export async function Scaffold(config: ScaffoldConfig): Promise<void> {
   config.output ??= process.cwd()
 
+  await assertConfigValid(config)
+  config = await resolveInputs(config)
   registerHelpers(config)
+
+  const startTime = performance.now()
+  const writtenFiles: string[] = []
   try {
     config.data = { name: config.name, ...config.data }
     logInitStep(config)
+
+    log(config, LogLevel.info, `Scaffolding "${config.name}"...`)
+
     const excludes = config.templates.filter((t) => t.startsWith("!"))
     const includes = config.templates.filter((t) => !t.startsWith("!"))
-    const templates: GlobInfo[] = []
-    for (const includedTemplate of includes) {
-      try {
-        const { nonGlobTemplate, origTemplate, isDirOrGlob, isGlob, template } = await getTemplateGlobInfo(
-          config,
-          includedTemplate,
-        )
-        templates.push({ nonGlobTemplate, origTemplate, isDirOrGlob, isGlob, template })
-      } catch (e: unknown) {
-        handleErr(e as NodeJS.ErrnoException)
-      }
-    }
+
+    const templates = await resolveTemplateGlobs(config, includes)
+
     for (const tpl of templates) {
-      const files = await getFileList(config, [tpl.template, ...excludes])
-      for (const file of files) {
-        if (await isDir(file)) {
-          continue
-        }
-        log(config, LogLevel.debug, "Iterating files", { files, file })
-        const relPath = makeRelativePath(path.dirname(removeGlob(file).replace(tpl.nonGlobTemplate, "")))
-        const basePath = getBasePath(relPath)
-        logInputFile(config, {
-          originalTemplate: tpl.origTemplate,
-          relativePath: relPath,
-          parsedTemplate: tpl.template,
-          inputFilePath: file,
-          nonGlobTemplate: tpl.nonGlobTemplate,
-          basePath,
-          isDirOrGlob: tpl.isDirOrGlob,
-          isGlob: tpl.isGlob,
-        })
-        await handleTemplateFile(config, {
-          templatePath: file,
-          basePath,
-        })
-      }
+      const files = await processTemplateGlob(config, tpl, excludes)
+      writtenFiles.push(...files)
     }
   } catch (e: unknown) {
     log(config, LogLevel.error, e)
     throw e
   }
+
+  const elapsed = performance.now() - startTime
+
+  logFileTree(config, writtenFiles)
+  logSummary(config, writtenFiles.length, elapsed, config.dryRun)
+
+  if (config.afterScaffold) {
+    await runAfterScaffoldHook(config, writtenFiles)
+  }
+}
+
+/** Resolves included template paths into GlobInfo objects. */
+async function resolveTemplateGlobs(
+  config: ScaffoldConfig,
+  includes: string[],
+): Promise<GlobInfo[]> {
+  const templates: GlobInfo[] = []
+  for (const includedTemplate of includes) {
+    try {
+      templates.push(await getTemplateGlobInfo(config, includedTemplate))
+    } catch (e: unknown) {
+      handleErr(e as NodeJS.ErrnoException)
+    }
+  }
+  return templates
+}
+
+/** Processes all files matching a single template glob pattern. Returns paths of written files. */
+async function processTemplateGlob(
+  config: ScaffoldConfig,
+  tpl: GlobInfo,
+  excludes: string[],
+): Promise<string[]> {
+  const written: string[] = []
+
+  // Load .scaffoldignore from the template base directory
+  const ignorePatterns = await loadIgnorePatterns(tpl.baseTemplatePath)
+  if (ignorePatterns.length > 0) {
+    log(config, LogLevel.debug, `Loaded .scaffoldignore patterns:`, ignorePatterns)
+  }
+
+  const allFiles = await getFileList(config, [tpl.template, ...excludes])
+  const files = filterIgnoredFiles(allFiles, ignorePatterns, tpl.baseTemplatePath)
+  for (const file of files) {
+    if (await isDir(file)) {
+      continue
+    }
+    log(config, LogLevel.debug, "Iterating files", { files, file })
+    const relPath = makeRelativePath(
+      path.dirname(removeGlob(file).replace(tpl.baseTemplatePath, "")),
+    )
+    const basePath = getBasePath(relPath)
+
+    log(config, LogLevel.debug, {
+      originalTemplate: tpl.origTemplate,
+      relativePath: relPath,
+      parsedTemplate: tpl.template,
+      inputFilePath: file,
+      baseTemplatePath: tpl.baseTemplatePath,
+      basePath,
+      isDirOrGlob: tpl.isDirOrGlob,
+      isGlob: tpl.isGlob,
+    })
+
+    const outputPath = await handleTemplateFile(config, { templatePath: file, basePath })
+    if (outputPath) {
+      written.push(outputPath)
+    }
+  }
+  return written
+}
+
+/** Executes the afterScaffold hook — either a function or a shell command string. */
+async function runAfterScaffoldHook(config: ScaffoldConfig, files: string[]): Promise<void> {
+  const hook = config.afterScaffold!
+
+  if (typeof hook === "function") {
+    log(config, LogLevel.debug, "Running afterScaffold function hook")
+    await hook({ config, files })
+    return
+  }
+
+  // Shell command string
+  const outputDir = typeof config.output === "string" ? config.output : process.cwd()
+  const cwd = path.resolve(process.cwd(), outputDir)
+
+  log(config, LogLevel.info, `Running afterScaffold command: ${hook}`)
+  await new Promise<void>((resolve, reject) => {
+    const proc = exec(hook, { cwd })
+    proc.stdout?.on("data", (data: string) => {
+      log(config, LogLevel.info, data.toString().trimEnd())
+    })
+    proc.stderr?.on("data", (data: string) => {
+      log(config, LogLevel.warning, data.toString().trimEnd())
+    })
+    proc.on("close", (code) => {
+      if (code === 0) {
+        resolve()
+      } else {
+        reject(new Error(`afterScaffold command exited with code ${code}`))
+      }
+    })
+    proc.on("error", reject)
+  })
 }
 
 /**
@@ -119,11 +197,8 @@ export async function Scaffold(config: ScaffoldConfig): Promise<void> {
  * @return {Promise<void>} A promise that resolves when the scaffold is complete
  */
 Scaffold.fromConfig = async function (
-  /** The path or URL to the config file */
   pathOrUrl: string,
-  /** Information needed before loading the config */
   config: MinimalConfig,
-  /** Any overrides to the loaded config */
   overrides?: Resolver<ScaffoldCmdConfig, Partial<Omit<ScaffoldConfig, "name">>>,
 ): Promise<void> {
   const tmpPath = path.resolve(os.tmpdir(), `scaffold-config-${Date.now()}`)

src/types.ts

@@ -166,10 +166,116 @@ export interface ScaffoldConfig {
     outputPath: string,
   ): string | Buffer | undefined | Promise<string | Buffer | undefined>
 
+  /**
+   * Defines interactive inputs for the template. Each input becomes a template data variable.
+   *
+   * When running interactively, required inputs that are not already provided via `data` or CLI args
+   * will be prompted for. Optional inputs without a value will use their `default` if defined.
+   *
+   * @example
+   * ```typescript
+   * Scaffold({
+   *   // ...
+   *   inputs: {
+   *     author: { message: "Author name", required: true },
+   *     license: { message: "License", default: "MIT" },
+   *   },
+   * })
+   * ```
+   *
+   * In templates: `{{ author }}`, `{{ license }}`
+   *
+   * @see {@link ScaffoldInput}
+   */
+  inputs?: Record<string, ScaffoldInput>
+
+  /**
+   * A callback or shell command that runs after all files have been written.
+   *
+   * When provided as a **function** (Node.js API), it receives a context object with the scaffold
+   * config and the list of files that were written:
+   *
+   * ```typescript
+   * Scaffold({
+   *   // ...
+   *   afterScaffold: async ({ config, files }) => {
+   *     console.log(`Created ${files.length} files`)
+   *     execSync("npm install", { cwd: config.output })
+   *   },
+   * })
+   * ```
+   *
+   * When provided as a **string** (CLI `--after` flag), it is executed as a shell command
+   * in the output directory after scaffolding completes.
+   *
+   * @see {@link AfterScaffoldContext}
+   */
+  afterScaffold?: AfterScaffoldHook
+
   /** @internal */
   tmpDir?: string
 }
 
+/**
+ * Context passed to the {@link ScaffoldConfig.afterScaffold} hook.
+ *
+ * @category Config
+ */
+export interface AfterScaffoldContext {
+  /** The resolved scaffold config that was used. */
+  config: ScaffoldConfig
+  /** List of absolute paths to files that were written. */
+  files: string[]
+}
+
+/**
+ * A hook that runs after scaffolding completes.
+ * Can be a function receiving context, or a shell command string.
+ *
+ * @category Config
+ */
+export type AfterScaffoldHook = ((context: AfterScaffoldContext) => void | Promise<void>) | string
+
+/**
+ * The type of an interactive input prompt.
+ *
+ * - `"text"` — free-form text input (default)
+ * - `"select"` — choose from a list of options
+ * - `"confirm"` — yes/no boolean prompt
+ * - `"number"` — numeric input
+ *
+ * @category Config
+ */
+export type ScaffoldInputType = "text" | "select" | "confirm" | "number"
+
+/**
+ * Defines a single interactive input for a scaffold template.
+ *
+ * @example
+ * ```typescript
+ * inputs: {
+ *   author: { message: "Author name", required: true },
+ *   license: { type: "select", message: "License", options: ["MIT", "Apache-2.0", "GPL-3.0"] },
+ *   private: { type: "confirm", message: "Private package?", default: false },
+ *   port: { type: "number", message: "Dev server port", default: 3000 },
+ * }
+ * ```
+ *
+ * @category Config
+ */
+export interface ScaffoldInput {
+  /** The type of prompt. Defaults to `"text"`. */
+  type?: ScaffoldInputType
+  /** The prompt message shown to the user. Defaults to the input key name if omitted. */
+  message?: string
+  /** Whether this input must be provided. If true and missing, the user will be prompted interactively. */
+  required?: boolean
+  /** Default value. Type depends on the input type: string for text/select, boolean for confirm, number for number. */
+  default?: string | boolean | number
+  /** List of options for `type: "select"`. Each can be a string or `{ name, value }`. */
+  options?: (string | { name: string; value: string })[]
+}
+
 /**
  * The names of the available helper functions that relate to text capitalization.
  *
@@ -342,6 +448,8 @@ export type FileResponse<T> = T | FileResponseHandler<T>
  * Contains less and more specific options than {@link ScaffoldConfig}.
  *
  * For more information about each option, see {@link ScaffoldConfig}.
+ *
+ * @internal
  */
 export type ScaffoldCmdConfig = {
   /** The name of the scaffold template to use. */
@@ -380,6 +488,8 @@ export type ScaffoldCmdConfig = {
   version: boolean
   /** Run a script before writing the files. This can be a command or a path to a file. The file contents will be passed to the given command. */
   beforeWrite?: string
+  /** Run a shell command after all files have been written. Executed in the output directory. */
+  afterScaffold?: string
   /** @internal */
   tmpDir?: string
 }
@@ -395,6 +505,7 @@ export type ScaffoldCmdConfig = {
  *
  * @see {@link ScaffoldConfig}
  *
+ * @internal
  * @category Config
  */
 export type ScaffoldConfigMap = Record<string, ScaffoldConfig>
@@ -406,6 +517,7 @@ export type ScaffoldConfigMap = Record<string, ScaffoldConfig>
  * - A promise that resolves to a {@link ScaffoldConfigMap} object
  * - A function that returns a promise that resolves to a {@link ScaffoldConfigMap} object
  *
+ * @internal
  * @category Config
  */
 export type ScaffoldConfigFile = AsyncResolver<ScaffoldCmdConfig, ScaffoldConfigMap>
@@ -423,9 +535,11 @@ export type LogConfig = Pick<ScaffoldConfig, "logLevel">
 export type ConfigLoadConfig = LogConfig & Pick<ScaffoldCmdConfig, "config">
 
 /** @internal */
-export type RemoteConfigLoadConfig = LogConfig & Pick<ScaffoldCmdConfig, "config" | "git" | "tmpDir">
+export type RemoteConfigLoadConfig = LogConfig &
+  Pick<ScaffoldCmdConfig, "config" | "git" | "tmpDir">
 
 /** @internal */
 export type MinimalConfig = Pick<ScaffoldCmdConfig, "name" | "key">
 
+/** @internal */
 export type ListCommandCliOptions = Pick<ScaffoldCmdConfig, "config" | "git" | "logLevel" | "quiet">

src/utils.ts

@@ -1,13 +1,19 @@
 import { Resolver } from "./types"
 
+// Re-export colors for backward compatibility
+export { colorize, type TermColor } from "./colors"
+
+/** Throws the error if non-null, no-ops otherwise. */
 export function handleErr(err: NodeJS.ErrnoException | null): void {
   if (err) throw err
 }
 
+/** Resolves a value that may be either a static value or a function that produces one. */
 export function resolve<T, R = T>(resolver: Resolver<T, R>, arg: T): R {
   return typeof resolver === "function" ? (resolver as (value: T) => R)(arg) : (resolver as R)
 }
 
+/** Wraps a static value in a resolver function. If already a function, returns as-is. */
 export function wrapNoopResolver<T, R = T>(value: Resolver<T, R>): Resolver<T, R> {
   if (typeof value === "function") {
     return value
@@ -15,65 +21,3 @@ export function wrapNoopResolver<T, R = T>(value: Resolver<T, R>): Resolver<T, R
 
   return (_) => value
 }
-
-const colorMap = {
-  reset: 0,
-  dim: 2,
-  bold: 1,
-  italic: 3,
-  underline: 4,
-  red: 31,
-  green: 32,
-  yellow: 33,
-  blue: 34,
-  magenta: 35,
-  cyan: 36,
-  white: 37,
-  gray: 90,
-} as const
-
-export type TermColor = keyof typeof colorMap
-
-function _colorize(text: string, color: TermColor): string {
-  const c = colorMap[color]!
-  let r = 0
-
-  if (c > 1 && c < 30) {
-    r = c + 20
-  } else if (c === 1) {
-    r = 23
-  } else {
-    r = 0
-  }
-
-  return `\x1b[${c}m${text}\x1b[${r}m`
-}
-
-function isTemplateStringArray(template: TemplateStringsArray | unknown): template is TemplateStringsArray {
-  return Array.isArray(template) && typeof template[0] === "string"
-}
-
-const createColorize =
-  (color: TermColor) =>
-    (template: TemplateStringsArray | unknown, ...params: unknown[]): string => {
-      return isTemplateStringArray(template)
-        ? _colorize(
-          (template as TemplateStringsArray).reduce((acc, str, i) => acc + str + (params[i] ?? ""), ""),
-          color,
-        )
-        : _colorize(String(template), color)
-    }
-
-type TemplateStringsFn = ReturnType<typeof createColorize> & ((text: string) => string)
-type TemplateStringsFns = { [key in TermColor]: TemplateStringsFn }
-
-export const colorize: typeof _colorize & TemplateStringsFns = Object.assign(
-  _colorize,
-  Object.entries(colorMap).reduce(
-    (acc, [key]) => {
-      acc[key as TermColor] = createColorize(key as TermColor)
-      return acc
-    },
-    {} as Record<TermColor, TemplateStringsFn>,
-  ),
-)

src/validate.ts

@@ -0,0 +1,171 @@
+import { z } from "zod/v4"
+import { pathExists } from "./fs-utils"
+
+// --- Reusable schemas ---
+
+/** Schema for a JavaScript function value. */
+const functionSchema = z
+  .any()
+  .refine((v) => typeof v === "function", { message: "Expected a function" })
+
+/** Schema for a value that can be either a string or a function. */
+const stringOrFunctionSchema = z.union([z.string(), functionSchema])
+
+/** Schema for a value that can be either a boolean or a function. */
+const booleanOrFunctionSchema = z.union([z.boolean(), functionSchema])
+
+/** Schema for a select input option — either a plain string or a `{ name, value }` object. */
+const selectOptionSchema = z.union([z.string(), z.object({ name: z.string(), value: z.string() })])
+
+/** Schema for the input type enum. */
+const inputTypeSchema = z.enum(["text", "select", "confirm", "number"])
+
+/** Schema for the log level enum. */
+const logLevelSchema = z.enum(["none", "debug", "info", "warning", "error"])
+
+// --- Input schema ---
+
+/** Zod schema for a single scaffold input definition. */
+const scaffoldInputSchema = z.object({
+  type: inputTypeSchema.optional(),
+  message: z.string().optional(),
+  required: z.boolean().optional(),
+  default: z.union([z.string(), z.boolean(), z.number()]).optional(),
+  options: z.array(selectOptionSchema).optional(),
+})
+
+type InputDef = z.infer<typeof scaffoldInputSchema>
+
+function validateInputSemantics(
+  key: string,
+  input: InputDef,
+): { path: (string | number)[]; message: string }[] {
+  const issues: { path: (string | number)[]; message: string }[] = []
+  if (input.type === "select" && (!input.options || input.options.length === 0)) {
+    issues.push({
+      path: ["inputs", key, "options"],
+      message: "select input must have a non-empty options array",
+    })
+  }
+  if (
+    input.type === "confirm" &&
+    input.default !== undefined &&
+    typeof input.default !== "boolean"
+  ) {
+    issues.push({
+      path: ["inputs", key, "default"],
+      message: "confirm input default must be a boolean",
+    })
+  }
+  if (input.type === "number" && input.default !== undefined && typeof input.default !== "number") {
+    issues.push({
+      path: ["inputs", key, "default"],
+      message: "number input default must be a number",
+    })
+  }
+  return issues
+}
+
+// --- Config schema ---
+
+/** Zod schema for ScaffoldConfig. */
+const scaffoldConfigSchema = z
+  .object({
+    name: z.string().min(1, "name is required"),
+    templates: z.array(z.string()).min(1, "templates must contain at least one entry"),
+    output: stringOrFunctionSchema,
+    subdir: z.boolean().optional(),
+    data: z.record(z.string(), z.unknown()).optional(),
+    overwrite: booleanOrFunctionSchema.optional(),
+    logLevel: logLevelSchema.optional(),
+    dryRun: z.boolean().optional(),
+    helpers: z.record(z.string(), functionSchema).optional(),
+    subdirHelper: z.string().optional(),
+    inputs: z.record(z.string(), scaffoldInputSchema).optional(),
+    beforeWrite: functionSchema.optional(),
+    afterScaffold: stringOrFunctionSchema.optional(),
+    tmpDir: z.string().optional(),
+  })
+  .check((ctx) => {
+    const config = ctx.value
+
+    if (config.subdirHelper && !config.subdir) {
+      ctx.issues.push({
+        code: "custom",
+        message: "subdirHelper is set but subdir is not enabled",
+        path: ["subdirHelper"],
+        input: config,
+      })
+    }
+
+    if (config.inputs) {
+      for (const [key, val] of Object.entries(config.inputs)) {
+        for (const issue of validateInputSemantics(key, val)) {
+          ctx.issues.push({ code: "custom", ...issue, input: config })
+        }
+      }
+    }
+  })
+
+export {
+  scaffoldConfigSchema,
+  scaffoldInputSchema,
+  functionSchema,
+  stringOrFunctionSchema,
+  booleanOrFunctionSchema,
+  selectOptionSchema,
+  inputTypeSchema,
+  logLevelSchema,
+}
+
+/**
+ * Validates a scaffold config and returns a list of human-readable errors.
+ * Returns an empty array if the config is valid.
+ */
+export function validateConfig(config: unknown): string[] {
+  const result = scaffoldConfigSchema.safeParse(config)
+  if (result.success) {
+    return []
+  }
+  return result.error.issues.map((issue) => {
+    const path = issue.path.length > 0 ? issue.path.join(".") : "(root)"
+    return `${path}: ${issue.message}`
+  })
+}
+
+/**
+ * Validates template paths exist on disk.
+ * Only checks non-glob, non-negation paths.
+ */
+export async function validateTemplatePaths(templates: string[]): Promise<string[]> {
+  const errors: string[] = []
+  for (const tpl of templates) {
+    if (tpl.startsWith("!") || tpl.includes("*")) continue
+    if (!(await pathExists(tpl))) {
+      errors.push(`templates: path does not exist: ${tpl}`)
+    }
+  }
+  return errors
+}
+
+/**
+ * Validates the config and throws a formatted error if any issues are found.
+ * Checks both schema validity and template path existence.
+ */
+export async function assertConfigValid(config: unknown): Promise<void> {
+  const schemaErrors = validateConfig(config)
+
+  const pathErrors =
+    config &&
+    typeof config === "object" &&
+    "templates" in config &&
+    Array.isArray((config as { templates: unknown }).templates)
+      ? await validateTemplatePaths((config as { templates: string[] }).templates)
+      : []
+
+  const allErrors = [...schemaErrors, ...pathErrors]
+  if (allErrors.length > 0) {
+    const lines = allErrors.map((e) => `  - ${e}`)
+    throw new Error(`Invalid scaffold config:\n${lines.join("\n")}`)
+  }
+}

tests/config.test.ts

@@ -1,17 +1,19 @@
+import { describe, test, expect, beforeEach, afterEach, beforeAll, vi } from "vitest"
 import mockFs from "mock-fs"
 import FileSystem from "mock-fs/lib/filesystem"
 import { Console } from "console"
-import { LogLevel, ScaffoldCmdConfig } from "../src/types"
+import { LogLevel, ScaffoldCmdConfig, ScaffoldConfig } from "../src/types"
 import * as config from "../src/config"
 import { resolve } from "../src/utils"
 import configFile from "./test-config"
-import { findConfigFile } from "../src/config"
+import { findConfigFile, getOptionValueForFile } from "../src/config"
+import { registerHelpers } from "../src/parser"
 import path from "path"
 
-jest.mock("../src/git", () => {
+vi.mock("../src/git", async () => {
+  const actual = await vi.importActual<typeof import("../src/git")>("../src/git")
   return {
-    __esModule: true,
-    ...jest.requireActual("../src/git"),
+    ...actual,
     getGitConfig: () => {
       return Promise.resolve(blankCliConf)
     },
@@ -53,17 +55,69 @@ describe("config", () => {
     })
 
     test("works with quotes", () => {
-      expect(parseAppendData('key="value test"', blankCliConf)).toEqual({ key: "value test", name: "test" })
+      expect(parseAppendData('key="value test"', blankCliConf)).toEqual({
+        key: "value test",
+        name: "test",
+      })
+    })
+
+    test("handles JSON array values with :=", () => {
+      expect(parseAppendData('items:=["a","b"]', blankCliConf)).toEqual({
+        items: ["a", "b"],
+        name: "test",
+      })
+    })
+
+    test("handles JSON boolean with :=", () => {
+      expect(parseAppendData("flag:=true", blankCliConf)).toEqual({ flag: true, name: "test" })
+      expect(parseAppendData("flag:=false", blankCliConf)).toEqual({ flag: false, name: "test" })
+    })
+
+    test("handles JSON null with :=", () => {
+      expect(parseAppendData("val:=null", blankCliConf)).toEqual({ val: null, name: "test" })
+    })
+
+    test("handles JSON object with :=", () => {
+      expect(parseAppendData('obj:={"a":1}', blankCliConf)).toEqual({ obj: { a: 1 }, name: "test" })
+    })
+
+    test("handles single quoted values", () => {
+      expect(parseAppendData("key='value test'", blankCliConf)).toEqual({
+        key: "value test",
+        name: "test",
+      })
+    })
+
+    test("handles empty string value", () => {
+      expect(parseAppendData("key=", blankCliConf)).toEqual({ key: "", name: "test" })
+    })
+
+    test("handles negative number with :=", () => {
+      expect(parseAppendData("num:=-42", blankCliConf)).toEqual({ num: -42, name: "test" })
+    })
+
+    test("handles float with :=", () => {
+      expect(parseAppendData("num:=3.14", blankCliConf)).toEqual({ num: 3.14, name: "test" })
     })
   })
 
   describe("githubPartToUrl", () => {
     test("works", () => {
-      expect(githubPartToUrl("chenasraf/simple-scaffold")).toEqual("https://github.com/chenasraf/simple-scaffold.git")
+      expect(githubPartToUrl("chenasraf/simple-scaffold")).toEqual(
+        "https://github.com/chenasraf/simple-scaffold.git",
+      )
       expect(githubPartToUrl("chenasraf/simple-scaffold.git")).toEqual(
         "https://github.com/chenasraf/simple-scaffold.git",
       )
     })
+
+    test("handles organization repos", () => {
+      expect(githubPartToUrl("org/sub-repo")).toEqual("https://github.com/org/sub-repo.git")
+    })
+
+    test("handles repos with dots in name", () => {
+      expect(githubPartToUrl("user/my.repo")).toEqual("https://github.com/user/my.repo.git")
+    })
   })
 
   describe("parseConfigFile", () => {
@@ -116,6 +170,111 @@ describe("config", () => {
         expect(result.output).toEqual("examples/test-output/override")
       })
     })
+
+    test("throws when name is missing", async () => {
+      await expect(
+        parseConfigFile({
+          ...blankCliConf,
+          name: "",
+          tmpDir: `/tmp/scaffold-config-${Date.now()}`,
+        }),
+      ).rejects.toThrow("Missing required option: name")
+    })
+
+    test("preserves dryRun setting", async () => {
+      const result = await parseConfigFile({
+        ...blankCliConf,
+        name: "test",
+        dryRun: true,
+        tmpDir: `/tmp/scaffold-config-${Date.now()}`,
+      })
+      expect(result.dryRun).toBe(true)
+    })
+
+    test("preserves subdir setting", async () => {
+      const result = await parseConfigFile({
+        ...blankCliConf,
+        name: "test",
+        subdir: true,
+        tmpDir: `/tmp/scaffold-config-${Date.now()}`,
+      })
+      expect(result.subdir).toBe(true)
+    })
+
+    test("preserves overwrite setting", async () => {
+      const result = await parseConfigFile({
+        ...blankCliConf,
+        name: "test",
+        overwrite: true,
+        tmpDir: `/tmp/scaffold-config-${Date.now()}`,
+      })
+      expect(result.overwrite).toBe(true)
+    })
+
+    test("merges data from config and appendData", async () => {
+      const result = await parseConfigFile({
+        ...blankCliConf,
+        name: "test",
+        data: { key1: "val1" },
+        appendData: { key2: "val2" },
+        tmpDir: `/tmp/scaffold-config-${Date.now()}`,
+      })
+      expect(result.data).toEqual({ key1: "val1", key2: "val2" })
+    })
+
+    test("appendData overrides data", async () => {
+      const result = await parseConfigFile({
+        ...blankCliConf,
+        name: "test",
+        data: { key: "original" },
+        appendData: { key: "overridden" },
+        tmpDir: `/tmp/scaffold-config-${Date.now()}`,
+      })
+      expect(result.data?.key).toEqual("overridden")
+    })
+
+    test("sets subdirHelper from config", async () => {
+      const result = await parseConfigFile({
+        ...blankCliConf,
+        name: "test",
+        subdirHelper: "pascalCase",
+        tmpDir: `/tmp/scaffold-config-${Date.now()}`,
+      })
+      expect(result.subdirHelper).toEqual("pascalCase")
+    })
+
+    test("handles empty templates array", async () => {
+      const result = await parseConfigFile({
+        ...blankCliConf,
+        name: "test",
+        templates: [],
+        tmpDir: `/tmp/scaffold-config-${Date.now()}`,
+      })
+      expect(result.templates).toEqual([])
+    })
+
+    test("throws when config key not found", async () => {
+      await expect(
+        parseConfigFile({
+          ...blankCliConf,
+          name: "test",
+          config: path.resolve(__dirname, "test-config.js"),
+          key: "nonexistent",
+          tmpDir: `/tmp/scaffold-config-${Date.now()}`,
+        }),
+      ).rejects.toThrow('Template "nonexistent" not found')
+    })
+
+    test("uses default key when key not specified", async () => {
+      const result = await parseConfigFile({
+        ...blankCliConf,
+        name: "MyComponent",
+        templates: undefined as unknown as string[],
+        config: path.resolve(__dirname, "test-config.js"),
+        tmpDir: `/tmp/scaffold-config-${Date.now()}`,
+      })
+      expect(result.templates.length).toBeGreaterThan(0)
+    })
   })
 
   describe("getConfig", () => {
@@ -139,6 +298,60 @@ describe("config", () => {
     })
   })
 
+  describe("getRemoteConfig", () => {
+    test("throws for unsupported protocol", async () => {
+      await expect(
+        config.getRemoteConfig({
+          git: "ftp://example.com/repo.git",
+          logLevel: LogLevel.none,
+          tmpDir: `/tmp/scaffold-config-${Date.now()}`,
+        }),
+      ).rejects.toThrow("Unsupported protocol")
+    })
+  })
+
+  describe("getOptionValueForFile", () => {
+    const conf: ScaffoldConfig = {
+      name: "test",
+      output: "output",
+      templates: [],
+      logLevel: LogLevel.none,
+      data: { name: "test" },
+    }
+
+    beforeAll(() => {
+      registerHelpers(conf)
+    })
+
+    test("returns static string value", () => {
+      expect(getOptionValueForFile(conf, "/some/path", "static-value")).toEqual("static-value")
+    })
+
+    test("returns static boolean value", () => {
+      expect(getOptionValueForFile(conf, "/some/path", true)).toBe(true)
+      expect(getOptionValueForFile(conf, "/some/path", false)).toBe(false)
+    })
+
+    test("calls function with file path info", () => {
+      const fn = vi.fn().mockReturnValue("custom-output")
+      const result = getOptionValueForFile(conf, "/home/user/file.txt", fn)
+      expect(result).toEqual("custom-output")
+      expect(fn).toHaveBeenCalledWith("/home/user/file.txt", expect.any(String), expect.any(String))
+    })
+
+    test("returns default value when fn is not a function and no value", () => {
+      expect(
+        getOptionValueForFile(conf, "/some/path", undefined as unknown as string, "default"),
+      ).toEqual("default")
+    })
+
+    test("function receives parsed basename", () => {
+      const fn = (_fullPath: string, _basedir: string, basename: string) => basename
+      const result = getOptionValueForFile(conf, "/home/user/{{name}}.txt", fn)
+      expect(result).toEqual("test.txt")
+    })
+  })
+
   describe("findConfigFile", () => {
     const struct1 = {
       "scaffold.config.js": `module.exports = '${JSON.stringify(blankConfig)}'`,
@@ -153,7 +366,7 @@ describe("config", () => {
       "scaffold.json": JSON.stringify(blankConfig),
     }
 
-    function withMock(fileStruct: FileSystem.DirectoryItems, testFn: jest.EmptyFunction): jest.EmptyFunction {
+    function withMock(fileStruct: FileSystem.DirectoryItems, testFn: () => void): () => void {
       return () => {
         beforeEach(() => {
           // console.log("Mocking:", fileStruct)
@@ -175,12 +388,152 @@ describe("config", () => {
     for (const struct of [struct1, struct2, struct3, struct4]) {
       const [k] = Object.keys(struct)
 
-      describe(`finds config file ${k}`, () => {
-        withMock(struct, async () => {
-          const result = await findConfigFile(process.cwd())
-          expect(result).toEqual(k)
-        })
-      })
+      describe(
+        `finds config file ${k}`,
+        withMock(struct, () => {
+          test(`finds ${k}`, async () => {
+            const result = await findConfigFile(process.cwd())
+            expect(result).toEqual(k)
+          })
+        }),
+      )
     }
+
+    describe(
+      "finds .mjs config file",
+      withMock({ "scaffold.config.mjs": "export default {}" }, () => {
+        test("finds scaffold.config.mjs", async () => {
+          const result = await findConfigFile(process.cwd())
+          expect(result).toEqual("scaffold.config.mjs")
+        })
+      }),
+    )
+
+    describe(
+      "priority order",
+      withMock(
+        {
+          "scaffold.config.js": "module.exports = {}",
+          "scaffold.js": "module.exports = {}",
+        },
+        () => {
+          test("prefers scaffold.config.js over scaffold.js", async () => {
+            const result = await findConfigFile(process.cwd())
+            expect(result).toEqual("scaffold.config.js")
+          })
+        },
+      ),
+    )
+
+    describe(
+      "throws when no config found",
+      withMock({ "unrelated-file.txt": "content" }, () => {
+        test("throws error when no config file exists", async () => {
+          await expect(findConfigFile(process.cwd())).rejects.toThrow("Could not find config file")
+        })
+      }),
+    )
+
+    describe(
+      "finds scaffold.config.cjs",
+      withMock({ "scaffold.config.cjs": "module.exports = {}" }, () => {
+        test("finds .cjs config file", async () => {
+          const result = await findConfigFile(process.cwd())
+          expect(result).toEqual("scaffold.config.cjs")
+        })
+      }),
+    )
+
+    describe(
+      "finds scaffold.config.json",
+      withMock({ "scaffold.config.json": "{}" }, () => {
+        test("finds .json config file", async () => {
+          const result = await findConfigFile(process.cwd())
+          expect(result).toEqual("scaffold.config.json")
+        })
+      }),
+    )
+
+    describe(
+      "finds scaffold.mjs",
+      withMock({ "scaffold.mjs": "export default {}" }, () => {
+        test("finds scaffold.mjs", async () => {
+          const result = await findConfigFile(process.cwd())
+          expect(result).toEqual("scaffold.mjs")
+        })
+      }),
+    )
+
+    describe(
+      "finds scaffold.cjs",
+      withMock({ "scaffold.cjs": "module.exports = {}" }, () => {
+        test("finds scaffold.cjs", async () => {
+          const result = await findConfigFile(process.cwd())
+          expect(result).toEqual("scaffold.cjs")
+        })
+      }),
+    )
+
+    describe(
+      "finds scaffold.json",
+      withMock({ "scaffold.json": "{}" }, () => {
+        test("finds scaffold.json", async () => {
+          const result = await findConfigFile(process.cwd())
+          expect(result).toEqual("scaffold.json")
+        })
+      }),
+    )
+
+    describe(
+      "finds .scaffold.js",
+      withMock({ ".scaffold.js": "module.exports = {}" }, () => {
+        test("finds dotfile config", async () => {
+          const result = await findConfigFile(process.cwd())
+          expect(result).toEqual(".scaffold.js")
+        })
+      }),
+    )
+
+    describe(
+      "finds .scaffold.json",
+      withMock({ ".scaffold.json": "{}" }, () => {
+        test("finds dotfile json config", async () => {
+          const result = await findConfigFile(process.cwd())
+          expect(result).toEqual(".scaffold.json")
+        })
+      }),
+    )
+
+    describe(
+      "prefers scaffold.config over .scaffold",
+      withMock(
+        {
+          "scaffold.config.js": "module.exports = {}",
+          ".scaffold.js": "module.exports = {}",
+        },
+        () => {
+          test("prefers scaffold.config.js over .scaffold.js", async () => {
+            const result = await findConfigFile(process.cwd())
+            expect(result).toEqual("scaffold.config.js")
+          })
+        },
+      ),
+    )
+
+    describe(
+      "prefers scaffold over .scaffold",
+      withMock(
+        {
+          "scaffold.js": "module.exports = {}",
+          ".scaffold.js": "module.exports = {}",
+        },
+        () => {
+          test("prefers scaffold.js over .scaffold.js", async () => {
+            const result = await findConfigFile(process.cwd())
+            expect(result).toEqual("scaffold.js")
+          })
+        },
+      ),
+    )
   })
 })

tests/file.test.ts

@@ -0,0 +1,456 @@
+import { describe, test, expect, beforeEach, afterEach } from "vitest"
+import mockFs from "mock-fs"
+import FileSystem from "mock-fs/lib/filesystem"
+import { Console } from "console"
+import path from "node:path"
+import os from "node:os"
+import {
+  removeGlob,
+  makeRelativePath,
+  getBasePath,
+  getOutputDir,
+  getUniqueTmpPath,
+  pathExists,
+  createDirIfNotExists,
+  getTemplateGlobInfo,
+  getTemplateFileInfo,
+  copyFileTransformed,
+  handleTemplateFile,
+  getFileList,
+} from "../src/file"
+import { ScaffoldConfig, LogLevel } from "../src/types"
+import { registerHelpers } from "../src/parser"
+import { readFileSync } from "fs"
+
+function withMock(fileStruct: FileSystem.DirectoryItems, testFn: () => void): () => void {
+  return () => {
+    beforeEach(() => {
+      console = new Console(process.stdout, process.stderr)
+      mockFs(fileStruct)
+    })
+    testFn()
+    afterEach(() => {
+      mockFs.restore()
+    })
+  }
+}
+
+const baseConfig: ScaffoldConfig = {
+  name: "test_app",
+  output: "output",
+  templates: ["input"],
+  logLevel: LogLevel.none,
+  data: { name: "test_app" },
+  tmpDir: ".",
+}
+
+describe("file utilities", () => {
+  describe("removeGlob", () => {
+    test("removes single wildcard", () => {
+      expect(removeGlob("input/*")).toEqual(path.normalize("input/"))
+    })
+
+    test("removes double wildcard", () => {
+      expect(removeGlob("input/**/*")).toEqual(path.normalize("input///"))
+    })
+
+    test("returns path unchanged when no glob", () => {
+      expect(removeGlob("input/file.txt")).toEqual(path.normalize("input/file.txt"))
+    })
+
+    test("removes wildcards from nested path", () => {
+      expect(removeGlob("a/b/*/c/**")).toEqual(path.normalize("a/b//c//"))
+    })
+
+    test("handles empty string", () => {
+      expect(removeGlob("")).toEqual(".")
+    })
+  })
+
+  describe("makeRelativePath", () => {
+    test("removes leading separator", () => {
+      expect(makeRelativePath(path.sep + "some/path")).toEqual("some/path")
+    })
+
+    test("returns path unchanged if no leading separator", () => {
+      expect(makeRelativePath("some/path")).toEqual("some/path")
+    })
+
+    test("handles empty string", () => {
+      expect(makeRelativePath("")).toEqual("")
+    })
+
+    test("removes only the first separator", () => {
+      expect(makeRelativePath(path.sep + "a" + path.sep + "b")).toEqual("a" + path.sep + "b")
+    })
+  })
+
+  describe("getBasePath", () => {
+    test("resolves relative path against cwd", () => {
+      const result = getBasePath("some/path")
+      expect(result).toEqual("some/path")
+    })
+
+    test("handles empty string", () => {
+      const result = getBasePath("")
+      expect(result).toEqual("")
+    })
+
+    test("handles current directory", () => {
+      const result = getBasePath(".")
+      expect(result).toEqual("")
+    })
+  })
+
+  describe("getOutputDir", () => {
+    test("returns output path without subdir", () => {
+      const config: ScaffoldConfig = { ...baseConfig, subdir: false }
+      registerHelpers(config)
+      const result = getOutputDir(config, "output", "")
+      expect(result).toEqual(path.resolve(process.cwd(), "output"))
+    })
+
+    test("returns output path with subdir", () => {
+      const config: ScaffoldConfig = { ...baseConfig, subdir: true }
+      registerHelpers(config)
+      const result = getOutputDir(config, "output", "")
+      expect(result).toEqual(path.resolve(process.cwd(), "output", "test_app"))
+    })
+
+    test("applies subdirHelper to subdir name", () => {
+      const config: ScaffoldConfig = {
+        ...baseConfig,
+        subdir: true,
+        subdirHelper: "pascalCase",
+      }
+      registerHelpers(config)
+      const result = getOutputDir(config, "output", "")
+      expect(result).toEqual(path.resolve(process.cwd(), "output", "TestApp"))
+    })
+
+    test("includes basePath in output", () => {
+      const config: ScaffoldConfig = { ...baseConfig, subdir: false }
+      registerHelpers(config)
+      const result = getOutputDir(config, "output", "nested/dir")
+      expect(result).toEqual(path.resolve(process.cwd(), "output", "nested/dir"))
+    })
+
+    test("combines output, basePath, and subdir", () => {
+      const config: ScaffoldConfig = { ...baseConfig, subdir: true }
+      registerHelpers(config)
+      const result = getOutputDir(config, "output", "nested")
+      expect(result).toEqual(path.resolve(process.cwd(), "output", "nested", "test_app"))
+    })
+  })
+
+  describe("getUniqueTmpPath", () => {
+    test("returns a path in os temp directory", () => {
+      const result = getUniqueTmpPath()
+      expect(result.startsWith(os.tmpdir())).toBe(true)
+    })
+
+    test("includes scaffold-config prefix", () => {
+      const result = getUniqueTmpPath()
+      expect(path.basename(result)).toMatch(/^scaffold-config-/)
+    })
+
+    test("generates unique paths", () => {
+      const a = getUniqueTmpPath()
+      const b = getUniqueTmpPath()
+      expect(a).not.toEqual(b)
+    })
+  })
+
+  describe(
+    "pathExists",
+    withMock(
+      {
+        "existing-file.txt": "content",
+        "existing-dir": {},
+      },
+      () => {
+        test("returns true for existing file", async () => {
+          expect(await pathExists("existing-file.txt")).toBe(true)
+        })
+
+        test("returns true for existing directory", async () => {
+          expect(await pathExists("existing-dir")).toBe(true)
+        })
+
+        test("returns false for non-existing path", async () => {
+          expect(await pathExists("non-existing")).toBe(false)
+        })
+      },
+    ),
+  )
+
+  describe(
+    "createDirIfNotExists",
+    withMock({}, () => {
+      test("creates directory", async () => {
+        await createDirIfNotExists("new-dir", { logLevel: LogLevel.none, dryRun: false })
+        expect(await pathExists("new-dir")).toBe(true)
+      })
+
+      test("creates nested directories recursively", async () => {
+        await createDirIfNotExists("a/b/c", { logLevel: LogLevel.none, dryRun: false })
+        expect(await pathExists("a/b/c")).toBe(true)
+      })
+
+      test("does not create directory in dry run mode", async () => {
+        await createDirIfNotExists("dry-dir", { logLevel: LogLevel.none, dryRun: true })
+        expect(await pathExists("dry-dir")).toBe(false)
+      })
+
+      test("does not throw if directory already exists", async () => {
+        await createDirIfNotExists("existing", { logLevel: LogLevel.none, dryRun: false })
+        await expect(
+          createDirIfNotExists("existing", { logLevel: LogLevel.none, dryRun: false }),
+        ).resolves.toBeUndefined()
+      })
+    }),
+  )
+
+  describe(
+    "getTemplateGlobInfo",
+    withMock(
+      {
+        "template-dir": {
+          "file1.txt": "content1",
+          "file2.txt": "content2",
+        },
+        "single-file.txt": "content",
+      },
+      () => {
+        test("detects directory template", async () => {
+          const result = await getTemplateGlobInfo(baseConfig, "template-dir")
+          expect(result.isDirOrGlob).toBe(true)
+          expect(result.isGlob).toBe(false)
+          expect(result.template).toEqual(path.join("template-dir", "**", "*"))
+        })
+
+        test("detects glob template", async () => {
+          const result = await getTemplateGlobInfo(baseConfig, "template-dir/**/*.txt")
+          expect(result.isDirOrGlob).toBe(true)
+          expect(result.isGlob).toBe(true)
+        })
+
+        test("preserves non-glob single file", async () => {
+          const result = await getTemplateGlobInfo(baseConfig, "single-file.txt")
+          expect(result.isDirOrGlob).toBe(false)
+          expect(result.isGlob).toBe(false)
+          expect(result.template).toEqual("single-file.txt")
+        })
+
+        test("stores original template", async () => {
+          const result = await getTemplateGlobInfo(baseConfig, "template-dir")
+          expect(result.origTemplate).toEqual("template-dir")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "getFileList",
+    withMock(
+      {
+        templates: {
+          "file1.txt": "content1",
+          "file2.js": "content2",
+          ".hidden": "hidden content",
+          nested: {
+            "file3.txt": "content3",
+          },
+        },
+      },
+      () => {
+        test("lists all files with glob", async () => {
+          const files = await getFileList(baseConfig, ["templates/**/*"])
+          expect(files.length).toBe(4)
+        })
+
+        test("includes dotfiles", async () => {
+          const files = await getFileList(baseConfig, ["templates/**/*"])
+          expect(files.some((f) => f.includes(".hidden"))).toBe(true)
+        })
+
+        test("filters by extension", async () => {
+          const files = await getFileList(baseConfig, ["templates/**/*.txt"])
+          expect(files.length).toBe(2)
+          expect(files.every((f) => f.endsWith(".txt"))).toBe(true)
+        })
+
+        test("supports exclusion patterns", async () => {
+          const files = await getFileList(baseConfig, ["templates/**/*.txt"])
+          expect(files.some((f) => f.includes(".hidden"))).toBe(false)
+          expect(files.every((f) => f.endsWith(".txt"))).toBe(true)
+        })
+      },
+    ),
+  )
+
+  describe(
+    "getTemplateFileInfo",
+    withMock(
+      {
+        input: {
+          "{{name}}.txt": "Hello {{name}}",
+        },
+        output: {},
+      },
+      () => {
+        test("calculates correct output path", async () => {
+          const config: ScaffoldConfig = { ...baseConfig, tmpDir: "." }
+          registerHelpers(config)
+          const info = await getTemplateFileInfo(config, {
+            templatePath: "input/{{name}}.txt",
+            basePath: "",
+          })
+          expect(info.inputPath).toEqual(path.resolve(process.cwd(), "input/{{name}}.txt"))
+          expect(info.outputPath).toContain("test_app.txt")
+          expect(info.exists).toBe(false)
+        })
+
+        test("detects existing output file", async () => {
+          mockFs.restore()
+          mockFs({
+            input: { "{{name}}.txt": "Hello {{name}}" },
+            output: { "test_app.txt": "existing" },
+          })
+          const config: ScaffoldConfig = { ...baseConfig, tmpDir: "." }
+          registerHelpers(config)
+          const info = await getTemplateFileInfo(config, {
+            templatePath: "input/{{name}}.txt",
+            basePath: "",
+          })
+          expect(info.exists).toBe(true)
+        })
+      },
+    ),
+  )
+
+  describe(
+    "copyFileTransformed",
+    withMock(
+      {
+        "input.txt": "Hello {{name}}",
+        output: {},
+      },
+      () => {
+        test("writes transformed content", async () => {
+          const config: ScaffoldConfig = { ...baseConfig }
+          registerHelpers(config)
+          await createDirIfNotExists("output", { logLevel: LogLevel.none, dryRun: false })
+          await copyFileTransformed(config, {
+            exists: false,
+            overwrite: false,
+            outputPath: "output/result.txt",
+            inputPath: "input.txt",
+          })
+          const content = readFileSync("output/result.txt").toString()
+          expect(content).toEqual("Hello test_app")
+        })
+
+        test("does not write in dry run mode", async () => {
+          const config: ScaffoldConfig = { ...baseConfig, dryRun: true }
+          registerHelpers(config)
+          await copyFileTransformed(config, {
+            exists: false,
+            overwrite: false,
+            outputPath: "output/result.txt",
+            inputPath: "input.txt",
+          })
+          expect(await pathExists("output/result.txt")).toBe(false)
+        })
+
+        test("skips existing file without overwrite", async () => {
+          mockFs.restore()
+          mockFs({
+            "input.txt": "Hello {{name}}",
+            output: { "result.txt": "original" },
+          })
+          const config: ScaffoldConfig = { ...baseConfig }
+          registerHelpers(config)
+          await copyFileTransformed(config, {
+            exists: true,
+            overwrite: false,
+            outputPath: "output/result.txt",
+            inputPath: "input.txt",
+          })
+          const content = readFileSync("output/result.txt").toString()
+          expect(content).toEqual("original")
+        })
+
+        test("overwrites existing file with overwrite flag", async () => {
+          mockFs.restore()
+          mockFs({
+            "input.txt": "Hello {{name}}",
+            output: { "result.txt": "original" },
+          })
+          const config: ScaffoldConfig = { ...baseConfig }
+          registerHelpers(config)
+          await copyFileTransformed(config, {
+            exists: true,
+            overwrite: true,
+            outputPath: "output/result.txt",
+            inputPath: "input.txt",
+          })
+          const content = readFileSync("output/result.txt").toString()
+          expect(content).toEqual("Hello test_app")
+        })
+
+        test("calls beforeWrite callback", async () => {
+          const config: ScaffoldConfig = {
+            ...baseConfig,
+            beforeWrite: (content) => content.toString().toUpperCase(),
+          }
+          registerHelpers(config)
+          await createDirIfNotExists("output", { logLevel: LogLevel.none, dryRun: false })
+          await copyFileTransformed(config, {
+            exists: false,
+            overwrite: false,
+            outputPath: "output/result.txt",
+            inputPath: "input.txt",
+          })
+          const content = readFileSync("output/result.txt").toString()
+          expect(content).toEqual("HELLO TEST_APP")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "handleTemplateFile",
+    withMock(
+      {
+        input: {
+          "{{name}}.txt": "Content for {{name}}",
+        },
+        output: {},
+      },
+      () => {
+        test("processes template file end to end", async () => {
+          const config: ScaffoldConfig = { ...baseConfig, tmpDir: "." }
+          registerHelpers(config)
+          await handleTemplateFile(config, {
+            templatePath: "input/{{name}}.txt",
+            basePath: "",
+          })
+          const content = readFileSync(path.join("output", "test_app.txt")).toString()
+          expect(content).toEqual("Content for test_app")
+        })
+
+        test("throws for non-existing template", async () => {
+          const config: ScaffoldConfig = { ...baseConfig, tmpDir: "." }
+          registerHelpers(config)
+          await expect(
+            handleTemplateFile(config, {
+              templatePath: "non-existing.txt",
+              basePath: "",
+            }),
+          ).rejects.toThrow()
+        })
+      },
+    ),
+  )
+})

tests/ignore.test.ts

@@ -0,0 +1,122 @@
+import { describe, test, expect, beforeEach, afterEach } from "vitest"
+import mockFs from "mock-fs"
+import { Console } from "console"
+import path from "node:path"
+import { parseIgnoreFile, loadIgnorePatterns, filterIgnoredFiles } from "../src/ignore"
+
+describe("ignore", () => {
+  describe("parseIgnoreFile", () => {
+    test("parses patterns", () => {
+      const result = parseIgnoreFile("node_modules\n*.log\n")
+      expect(result).toEqual(["node_modules", "*.log"])
+    })
+
+    test("skips comments", () => {
+      const result = parseIgnoreFile("# comment\nfoo\n# another\nbar")
+      expect(result).toEqual(["foo", "bar"])
+    })
+
+    test("skips empty lines", () => {
+      const result = parseIgnoreFile("foo\n\n\nbar\n")
+      expect(result).toEqual(["foo", "bar"])
+    })
+
+    test("trims whitespace", () => {
+      const result = parseIgnoreFile("  foo  \n  bar  ")
+      expect(result).toEqual(["foo", "bar"])
+    })
+
+    test("handles empty file", () => {
+      expect(parseIgnoreFile("")).toEqual([])
+    })
+
+    test("handles comments-only file", () => {
+      expect(parseIgnoreFile("# just comments\n# nothing here")).toEqual([])
+    })
+  })
+
+  describe("filterIgnoredFiles", () => {
+    test("filters files matching patterns", () => {
+      const files = ["templates/file.txt", "templates/debug.log", "templates/other.js"]
+      const result = filterIgnoredFiles(files, ["*.log"], "templates")
+      expect(result).toEqual(["templates/file.txt", "templates/other.js"])
+    })
+
+    test("always excludes .scaffoldignore", () => {
+      const files = ["templates/file.txt", "templates/.scaffoldignore"]
+      const result = filterIgnoredFiles(files, [], "templates")
+      expect(result).toEqual(["templates/file.txt"])
+    })
+
+    test("matches by relative path", () => {
+      const files = ["templates/src/index.ts", "templates/dist/index.js", "templates/src/utils.ts"]
+      const result = filterIgnoredFiles(files, ["dist/**"], "templates")
+      expect(result).toEqual(["templates/src/index.ts", "templates/src/utils.ts"])
+    })
+
+    test("matches by basename", () => {
+      const files = ["templates/README.md", "templates/nested/README.md", "templates/file.txt"]
+      const result = filterIgnoredFiles(files, ["README.md"], "templates")
+      expect(result).toEqual(["templates/file.txt"])
+    })
+
+    test("handles multiple patterns", () => {
+      const files = ["tpl/a.txt", "tpl/b.log", "tpl/c.tmp", "tpl/d.ts"]
+      const result = filterIgnoredFiles(files, ["*.log", "*.tmp"], "tpl")
+      expect(result).toEqual(["tpl/a.txt", "tpl/d.ts"])
+    })
+
+    test("returns all files when no patterns", () => {
+      const files = ["tpl/a.txt", "tpl/b.txt"]
+      const result = filterIgnoredFiles(files, [], "tpl")
+      expect(result).toEqual(files)
+    })
+
+    test("handles glob patterns with directories", () => {
+      const files = [
+        path.join("tpl", "src", "index.ts"),
+        path.join("tpl", "node_modules", "pkg", "index.js"),
+        path.join("tpl", "file.txt"),
+      ]
+      const result = filterIgnoredFiles(files, ["node_modules/**"], "tpl")
+      expect(result).toEqual([path.join("tpl", "src", "index.ts"), path.join("tpl", "file.txt")])
+    })
+  })
+
+  describe("loadIgnorePatterns", () => {
+    beforeEach(() => {
+      console = new Console(process.stdout, process.stderr)
+    })
+
+    afterEach(() => {
+      mockFs.restore()
+    })
+
+    test("returns empty array when no .scaffoldignore exists", async () => {
+      mockFs({ templates: { "file.txt": "content" } })
+      const result = await loadIgnorePatterns("templates")
+      expect(result).toEqual([])
+    })
+
+    test("reads and parses .scaffoldignore", async () => {
+      mockFs({
+        templates: {
+          ".scaffoldignore": "*.log\nnode_modules\n",
+          "file.txt": "content",
+        },
+      })
+      const result = await loadIgnorePatterns("templates")
+      expect(result).toEqual(["*.log", "node_modules"])
+    })
+
+    test("ignores comments in .scaffoldignore", async () => {
+      mockFs({
+        templates: {
+          ".scaffoldignore": "# This is a comment\n*.tmp\n",
+        },
+      })
+      const result = await loadIgnorePatterns("templates")
+      expect(result).toEqual(["*.tmp"])
+    })
+  })
+})

tests/init.test.ts

@@ -0,0 +1,115 @@
+import { describe, test, expect, vi, beforeEach, afterEach } from "vitest"
+import mockFs from "mock-fs"
+import { Console } from "console"
+import { readFileSync, existsSync } from "fs"
+import path from "path"
+
+vi.mock("@inquirer/input", () => ({
+  default: vi.fn(),
+}))
+
+vi.mock("@inquirer/select", () => ({
+  default: vi.fn(),
+}))
+
+import selectMock from "@inquirer/select"
+import { initScaffold } from "../src/init"
+
+describe("init", () => {
+  beforeEach(() => {
+    console = new Console(process.stdout, process.stderr)
+    vi.clearAllMocks()
+    mockFs({})
+  })
+
+  afterEach(() => {
+    mockFs.restore()
+  })
+
+  test("creates js config and example template", async () => {
+    await initScaffold({ format: "js", dir: process.cwd() })
+
+    expect(existsSync("scaffold.config.js")).toBe(true)
+    const config = readFileSync("scaffold.config.js", "utf-8")
+    expect(config).toContain("module.exports")
+    expect(config).toContain("templates/default")
+
+    expect(existsSync(path.join("templates", "default", "{{name}}.md"))).toBe(true)
+    const template = readFileSync(path.join("templates", "default", "{{name}}.md"), "utf-8")
+    expect(template).toContain("{{ name }}")
+  })
+
+  test("creates mjs config", async () => {
+    await initScaffold({ format: "mjs", dir: process.cwd() })
+
+    expect(existsSync("scaffold.config.mjs")).toBe(true)
+    const config = readFileSync("scaffold.config.mjs", "utf-8")
+    expect(config).toContain("export default")
+  })
+
+  test("creates json config", async () => {
+    await initScaffold({ format: "json", dir: process.cwd() })
+
+    expect(existsSync("scaffold.config.json")).toBe(true)
+    const config = readFileSync("scaffold.config.json", "utf-8")
+    const parsed = JSON.parse(config)
+    expect(parsed.default).toBeDefined()
+    expect(parsed.default.templates).toEqual(["templates/default"])
+  })
+
+  test("does not overwrite existing config", async () => {
+    mockFs.restore()
+    mockFs({
+      "scaffold.config.js": "// existing config",
+    })
+
+    await initScaffold({ format: "js", dir: process.cwd() })
+
+    const config = readFileSync("scaffold.config.js", "utf-8")
+    expect(config).toBe("// existing config")
+  })
+
+  test("does not overwrite existing template dir", async () => {
+    mockFs.restore()
+    mockFs({
+      templates: {
+        default: {
+          "existing.md": "# Existing",
+        },
+      },
+    })
+
+    await initScaffold({ format: "js", dir: process.cwd() })
+
+    expect(existsSync(path.join("templates", "default", "existing.md"))).toBe(true)
+    expect(existsSync(path.join("templates", "default", "{{name}}.md"))).toBe(false)
+  })
+
+  test("skips example template when createExample is false", async () => {
+    await initScaffold({ format: "js", dir: process.cwd(), createExample: false })
+
+    expect(existsSync("scaffold.config.js")).toBe(true)
+    expect(existsSync("templates")).toBe(false)
+  })
+
+  test("prompts for format when not provided", async () => {
+    vi.mocked(selectMock).mockResolvedValue("js")
+
+    await initScaffold({ dir: process.cwd() })
+
+    expect(selectMock).toHaveBeenCalledOnce()
+    expect(existsSync("scaffold.config.js")).toBe(true)
+  })
+
+  test("creates config in custom directory", async () => {
+    mockFs.restore()
+    mockFs({
+      "my-project": {},
+    })
+
+    await initScaffold({ format: "js", dir: path.resolve("my-project") })
+
+    expect(existsSync(path.join("my-project", "scaffold.config.js"))).toBe(true)
+    expect(existsSync(path.join("my-project", "templates", "default", "{{name}}.md"))).toBe(true)
+  })
+})

tests/logger.test.ts

@@ -0,0 +1,175 @@
+import { describe, test, expect, beforeEach, afterEach, vi, type MockInstance } from "vitest"
+import { log, logInitStep, logInputFile } from "../src/logger"
+import { LogLevel, ScaffoldConfig } from "../src/types"
+
+describe("logger", () => {
+  let consoleSpy: {
+    log: MockInstance
+    warn: MockInstance
+    error: MockInstance
+  }
+
+  beforeEach(() => {
+    consoleSpy = {
+      log: vi.spyOn(console, "log").mockImplementation(() => void 0),
+      warn: vi.spyOn(console, "warn").mockImplementation(() => void 0),
+      error: vi.spyOn(console, "error").mockImplementation(() => void 0),
+    }
+  })
+
+  afterEach(() => {
+    consoleSpy.log.mockRestore()
+    consoleSpy.warn.mockRestore()
+    consoleSpy.error.mockRestore()
+  })
+
+  describe("log", () => {
+    test("does not log when logLevel is none", () => {
+      log({ logLevel: LogLevel.none }, LogLevel.info, "test")
+      expect(consoleSpy.log).not.toHaveBeenCalled()
+    })
+
+    test("logs info messages with console.log", () => {
+      log({ logLevel: LogLevel.info }, LogLevel.info, "test message")
+      expect(consoleSpy.log).toHaveBeenCalled()
+    })
+
+    test("logs warning messages with console.warn", () => {
+      log({ logLevel: LogLevel.warning }, LogLevel.warning, "warning message")
+      expect(consoleSpy.warn).toHaveBeenCalled()
+    })
+
+    test("logs error messages with console.error", () => {
+      log({ logLevel: LogLevel.error }, LogLevel.error, "error message")
+      expect(consoleSpy.error).toHaveBeenCalled()
+    })
+
+    test("filters out messages below configured level", () => {
+      log({ logLevel: LogLevel.warning }, LogLevel.info, "should be filtered")
+      expect(consoleSpy.log).not.toHaveBeenCalled()
+    })
+
+    test("filters out debug messages when level is info", () => {
+      log({ logLevel: LogLevel.info }, LogLevel.debug, "debug message")
+      expect(consoleSpy.log).not.toHaveBeenCalled()
+    })
+
+    test("shows debug messages when level is debug", () => {
+      log({ logLevel: LogLevel.debug }, LogLevel.debug, "debug message")
+      expect(consoleSpy.log).toHaveBeenCalled()
+    })
+
+    test("shows all levels when configured as debug", () => {
+      log({ logLevel: LogLevel.debug }, LogLevel.debug, "d")
+      log({ logLevel: LogLevel.debug }, LogLevel.info, "i")
+      log({ logLevel: LogLevel.debug }, LogLevel.warning, "w")
+      log({ logLevel: LogLevel.debug }, LogLevel.error, "e")
+      expect(consoleSpy.log).toHaveBeenCalledTimes(2) // debug + info
+      expect(consoleSpy.warn).toHaveBeenCalledTimes(1)
+      expect(consoleSpy.error).toHaveBeenCalledTimes(1)
+    })
+
+    test("handles Error objects", () => {
+      log({ logLevel: LogLevel.error }, LogLevel.error, new Error("test error"))
+      expect(consoleSpy.error).toHaveBeenCalled()
+    })
+
+    test("handles objects with util.inspect", () => {
+      log({ logLevel: LogLevel.info }, LogLevel.info, { key: "value" })
+      expect(consoleSpy.log).toHaveBeenCalled()
+    })
+
+    test("handles multiple arguments", () => {
+      log({ logLevel: LogLevel.info }, LogLevel.info, "a", "b", "c")
+      expect(consoleSpy.log).toHaveBeenCalled()
+      // First call, should have 3 arguments
+      expect(consoleSpy.log.mock.calls[0].length).toBe(3)
+    })
+
+    test("defaults to info when logLevel is undefined", () => {
+      log({ logLevel: undefined as unknown as LogLevel }, LogLevel.info, "test")
+      expect(consoleSpy.log).toHaveBeenCalled()
+    })
+
+    test("error level shows when logLevel is info", () => {
+      log({ logLevel: LogLevel.info }, LogLevel.error, "error")
+      expect(consoleSpy.error).toHaveBeenCalled()
+    })
+
+    test("warning level shows when logLevel is info", () => {
+      log({ logLevel: LogLevel.info }, LogLevel.warning, "warning")
+      expect(consoleSpy.warn).toHaveBeenCalled()
+    })
+  })
+
+  describe("logInitStep", () => {
+    test("logs config at debug level", () => {
+      const config: ScaffoldConfig = {
+        name: "test",
+        output: "output",
+        templates: ["input"],
+        logLevel: LogLevel.debug,
+        data: { name: "test" },
+      }
+      logInitStep(config)
+      expect(consoleSpy.log).toHaveBeenCalled()
+    })
+
+    test("does not log at info level (debug only)", () => {
+      const config: ScaffoldConfig = {
+        name: "test",
+        output: "output",
+        templates: ["input"],
+        logLevel: LogLevel.info,
+        data: { name: "test" },
+      }
+      logInitStep(config)
+      // Full config is debug-only, nothing logged at info
+      expect(consoleSpy.log).not.toHaveBeenCalled()
+    })
+  })
+
+  describe("logInputFile", () => {
+    test("logs file info at debug level", () => {
+      const config: ScaffoldConfig = {
+        name: "test",
+        output: "output",
+        templates: ["input"],
+        logLevel: LogLevel.debug,
+        data: { name: "test" },
+      }
+      logInputFile(config, {
+        originalTemplate: "input",
+        relativePath: ".",
+        parsedTemplate: "input/**/*",
+        inputFilePath: "input/file.txt",
+        nonGlobTemplate: "input",
+        basePath: "",
+        isDirOrGlob: true,
+        isGlob: false,
+      })
+      expect(consoleSpy.log).toHaveBeenCalled()
+    })
+
+    test("does not log at info level", () => {
+      const config: ScaffoldConfig = {
+        name: "test",
+        output: "output",
+        templates: ["input"],
+        logLevel: LogLevel.info,
+        data: { name: "test" },
+      }
+      logInputFile(config, {
+        originalTemplate: "input",
+        relativePath: ".",
+        parsedTemplate: "input/**/*",
+        inputFilePath: "input/file.txt",
+        nonGlobTemplate: "input",
+        basePath: "",
+        isDirOrGlob: true,
+        isGlob: false,
+      })
+      expect(consoleSpy.log).not.toHaveBeenCalled()
+    })
+  })
+})

tests/parser.test.ts

@@ -1,7 +1,8 @@
+import { describe, test, expect, beforeAll, afterAll } from "vitest"
 import { ScaffoldConfig } from "../src/types"
 import path from "node:path"
 import * as dateFns from "date-fns"
-import { dateHelper, defaultHelpers, handlebarsParse, nowHelper } from "../src/parser"
+import { dateHelper, defaultHelpers, handlebarsParse, nowHelper, registerHelpers } from "../src/parser"
 
 const blankConf: ScaffoldConfig = {
   logLevel: "none",
@@ -61,6 +62,88 @@ describe("parser", () => {
         ),
       ).toEqual(Buffer.from("/home/test/test {{escaped}}.txt"))
     })
+
+    test("should replace name token in content", () => {
+      const result = handlebarsParse(blankConf, "Hello {{name}}")
+      expect(result.toString()).toEqual("Hello test")
+    })
+
+    test("should replace multiple tokens", () => {
+      const config: ScaffoldConfig = {
+        ...blankConf,
+        data: { name: "app", version: "1.0" },
+      }
+      expect(handlebarsParse(config, "{{name}} v{{version}}").toString()).toEqual("app v1.0")
+    })
+
+    test("should return Buffer", () => {
+      expect(Buffer.isBuffer(handlebarsParse(blankConf, "test"))).toBe(true)
+    })
+
+    test("should handle Buffer input", () => {
+      expect(handlebarsParse(blankConf, Buffer.from("Hello {{name}}")).toString()).toEqual("Hello test")
+    })
+
+    test("should return original content on handlebars error", () => {
+      const result = handlebarsParse(blankConf, "{{#if}}invalid{{/unless}}")
+      expect(Buffer.isBuffer(result)).toBe(true)
+      expect(result.toString()).toEqual("{{#if}}invalid{{/unless}}")
+    })
+
+    test("should handle empty template", () => {
+      expect(handlebarsParse(blankConf, "").toString()).toEqual("")
+    })
+
+    test("should handle template with no tokens", () => {
+      expect(handlebarsParse(blankConf, "no tokens here").toString()).toEqual("no tokens here")
+    })
+
+    test("should not escape HTML chars (noEscape)", () => {
+      const config: ScaffoldConfig = {
+        ...blankConf,
+        data: { name: "<div>test</div>" },
+      }
+      expect(handlebarsParse(config, "{{name}}").toString()).toEqual("<div>test</div>")
+    })
+
+    test("should handle nested data", () => {
+      const config: ScaffoldConfig = {
+        ...blankConf,
+        data: { name: "test", nested: { key: "value" } },
+      }
+      expect(handlebarsParse(config, "{{nested.key}}").toString()).toEqual("value")
+    })
+
+    test("should handle handlebars conditionals", () => {
+      const config: ScaffoldConfig = {
+        ...blankConf,
+        data: { name: "test", showExtra: true },
+      }
+      registerHelpers(config)
+      expect(handlebarsParse(config, "{{#if showExtra}}extra{{/if}} content").toString()).toEqual("extra content")
+    })
+
+    test("should handle handlebars conditionals when false", () => {
+      const config: ScaffoldConfig = {
+        ...blankConf,
+        data: { name: "test", showExtra: false },
+      }
+      registerHelpers(config)
+      expect(handlebarsParse(config, "{{#if showExtra}}extra{{/if}}content").toString()).toEqual("content")
+    })
+
+    test("should handle handlebars each loops", () => {
+      const config: ScaffoldConfig = {
+        ...blankConf,
+        data: { name: "test", items: ["a", "b", "c"] },
+      }
+      registerHelpers(config)
+      expect(handlebarsParse(config, "{{#each items}}{{this}},{{/each}}").toString()).toEqual("a,b,c,")
+    })
+
+    test("should render empty for undefined data token", () => {
+      expect(handlebarsParse(blankConf, "{{undefinedVar}}").toString()).toEqual("")
+    })
   })
 
   describe("Helpers", () => {
@@ -111,6 +194,91 @@ describe("parser", () => {
       })
     })
 
+    describe("string helpers edge cases", () => {
+      test("camelCase single word", () => {
+        expect(defaultHelpers.camelCase("hello")).toEqual("hello")
+      })
+
+      test("camelCase empty string", () => {
+        expect(defaultHelpers.camelCase("")).toEqual("")
+      })
+
+      test("camelCase all uppercase", () => {
+        expect(defaultHelpers.camelCase("HELLO WORLD")).toEqual("helloWorld")
+      })
+
+      test("pascalCase single word", () => {
+        expect(defaultHelpers.pascalCase("hello")).toEqual("Hello")
+      })
+
+      test("pascalCase empty string", () => {
+        expect(defaultHelpers.pascalCase("")).toEqual("")
+      })
+
+      test("snakeCase single word", () => {
+        expect(defaultHelpers.snakeCase("hello")).toEqual("hello")
+      })
+
+      test("snakeCase empty string", () => {
+        expect(defaultHelpers.snakeCase("")).toEqual("")
+      })
+
+      test("kebabCase single word", () => {
+        expect(defaultHelpers.kebabCase("hello")).toEqual("hello")
+      })
+
+      test("kebabCase empty string", () => {
+        expect(defaultHelpers.kebabCase("")).toEqual("")
+      })
+
+      test("startCase single word", () => {
+        expect(defaultHelpers.startCase("hello")).toEqual("Hello")
+      })
+
+      test("startCase empty string", () => {
+        expect(defaultHelpers.startCase("")).toEqual("")
+      })
+
+      test("hyphenCase is same as kebabCase", () => {
+        expect(defaultHelpers.hyphenCase("testString")).toEqual(defaultHelpers.kebabCase("testString"))
+        expect(defaultHelpers.hyphenCase("test_string")).toEqual(defaultHelpers.kebabCase("test_string"))
+      })
+
+      test("lowerCase lowercases everything", () => {
+        expect(defaultHelpers.lowerCase("HELLO")).toEqual("hello")
+        expect(defaultHelpers.lowerCase("Hello World")).toEqual("hello world")
+      })
+
+      test("upperCase uppercases everything", () => {
+        expect(defaultHelpers.upperCase("hello")).toEqual("HELLO")
+        expect(defaultHelpers.upperCase("hello world")).toEqual("HELLO WORLD")
+      })
+
+      test("camelCase handles numbers in string", () => {
+        expect(defaultHelpers.camelCase("item1_name")).toEqual("item1Name")
+      })
+
+      test("pascalCase handles multiple separators", () => {
+        expect(defaultHelpers.pascalCase("a--b__c  d")).toEqual("ABCD")
+      })
+
+      test("snakeCase handles mixed separators", () => {
+        expect(defaultHelpers.snakeCase("myApp-name_here")).toEqual("my_app_name_here")
+      })
+
+      test("kebabCase handles mixed separators", () => {
+        expect(defaultHelpers.kebabCase("myApp-name_here")).toEqual("my-app-name-here")
+      })
+
+      test("single character inputs", () => {
+        expect(defaultHelpers.camelCase("a")).toEqual("a")
+        expect(defaultHelpers.pascalCase("a")).toEqual("A")
+        expect(defaultHelpers.snakeCase("a")).toEqual("a")
+        expect(defaultHelpers.kebabCase("a")).toEqual("a")
+        expect(defaultHelpers.startCase("a")).toEqual("A")
+      })
+    })
+
     describe("date helpers", () => {
       describe("now", () => {
         test("should work without extra params", () => {
@@ -140,7 +308,122 @@ describe("parser", () => {
             dateFns.format(dateFns.add(now, { months: 1 }), fmt),
           )
         })
+
+        test("should work with years offset", () => {
+          const dateStr = "2024-01-15T12:00:00.000Z"
+          const date = dateFns.parseISO(dateStr)
+          expect(dateHelper(dateStr, "yyyy", 1, "years")).toEqual(
+            dateFns.format(dateFns.add(date, { years: 1 }), "yyyy"),
+          )
+        })
+
+        test("should work with weeks offset", () => {
+          const dateStr = "2024-01-15T12:00:00.000Z"
+          const date = dateFns.parseISO(dateStr)
+          expect(dateHelper(dateStr, "yyyy-MM-dd", 2, "weeks")).toEqual(
+            dateFns.format(dateFns.add(date, { weeks: 2 }), "yyyy-MM-dd"),
+          )
+        })
+
+        test("should work with minutes offset", () => {
+          const dateStr = "2024-01-15T12:00:00.000Z"
+          const date = dateFns.parseISO(dateStr)
+          expect(dateHelper(dateStr, "HH:mm", 30, "minutes")).toEqual(
+            dateFns.format(dateFns.add(date, { minutes: 30 }), "HH:mm"),
+          )
+        })
+
+        test("should work with seconds offset", () => {
+          const dateStr = "2024-01-15T12:00:00.000Z"
+          const date = dateFns.parseISO(dateStr)
+          expect(dateHelper(dateStr, "HH:mm:ss", 45, "seconds")).toEqual(
+            dateFns.format(dateFns.add(date, { seconds: 45 }), "HH:mm:ss"),
+          )
+        })
+      })
+
+      describe("now edge cases", () => {
+        test("should work with different format tokens", () => {
+          const now = new Date()
+          expect(nowHelper("yyyy")).toEqual(dateFns.format(now, "yyyy"))
+          expect(nowHelper("MM")).toEqual(dateFns.format(now, "MM"))
+          expect(nowHelper("dd")).toEqual(dateFns.format(now, "dd"))
+        })
+
+        test("should work with positive offset", () => {
+          const now = new Date()
+          const result = nowHelper("yyyy-MM-dd", 1, "days")
+          const expected = dateFns.format(dateFns.add(now, { days: 1 }), "yyyy-MM-dd")
+          expect(result).toEqual(expected)
+        })
+
+        test("should work with hours offset", () => {
+          const now = new Date()
+          const result = nowHelper("HH", 2, "hours")
+          const expected = dateFns.format(dateFns.add(now, { hours: 2 }), "HH")
+          expect(result).toEqual(expected)
+        })
       })
     })
   })
+
+  describe("registerHelpers", () => {
+    test("registers default helpers", () => {
+      const config: ScaffoldConfig = { ...blankConf }
+      registerHelpers(config)
+      const result = handlebarsParse(
+        { ...config, data: { name: "hello_world" } },
+        "{{camelCase name}}",
+      )
+      expect(result.toString()).toEqual("helloWorld")
+    })
+
+    test("registers custom helpers", () => {
+      const config: ScaffoldConfig = {
+        ...blankConf,
+        helpers: {
+          reverse: (text: string) => text.split("").reverse().join(""),
+        },
+      }
+      registerHelpers(config)
+      const result = handlebarsParse(
+        { ...config, data: { name: "hello" } },
+        "{{reverse name}}",
+      )
+      expect(result.toString()).toEqual("olleh")
+    })
+
+    test("custom helpers override default helpers", () => {
+      const config: ScaffoldConfig = {
+        ...blankConf,
+        helpers: {
+          camelCase: () => "OVERRIDDEN",
+        },
+      }
+      registerHelpers(config)
+      const result = handlebarsParse(
+        { ...config, data: { name: "test" } },
+        "{{camelCase name}}",
+      )
+      expect(result.toString()).toEqual("OVERRIDDEN")
+    })
+  })
+
+  describe("default helpers completeness", () => {
+    test("all expected helpers are defined", () => {
+      const expectedHelpers = [
+        "camelCase", "snakeCase", "startCase", "kebabCase",
+        "hyphenCase", "pascalCase", "lowerCase", "upperCase",
+        "now", "date",
+      ]
+      for (const helper of expectedHelpers) {
+        expect(defaultHelpers).toHaveProperty(helper)
+        expect(typeof defaultHelpers[helper as keyof typeof defaultHelpers]).toBe("function")
+      }
+    })
+
+    test("has exactly 10 helpers", () => {
+      expect(Object.keys(defaultHelpers).length).toBe(10)
+    })
+  })
 })

tests/prompts.test.ts

@@ -0,0 +1,529 @@
+import { describe, test, expect, vi, beforeEach } from "vitest"
+import { LogLevel, ScaffoldCmdConfig, ScaffoldConfig } from "../src/types"
+
+vi.mock("@inquirer/input", () => ({
+  default: vi.fn(),
+}))
+
+vi.mock("@inquirer/select", () => ({
+  default: vi.fn(),
+}))
+
+vi.mock("@inquirer/confirm", () => ({
+  default: vi.fn(),
+}))
+
+vi.mock("@inquirer/number", () => ({
+  default: vi.fn(),
+}))
+
+import inputMock from "@inquirer/input"
+import selectMock from "@inquirer/select"
+import confirmMock from "@inquirer/confirm"
+import numberMock from "@inquirer/number"
+import {
+  promptForName,
+  promptForTemplateKey,
+  promptForOutput,
+  promptForTemplates,
+  promptForMissingConfig,
+  promptForInputs,
+  resolveInputs,
+  isInteractive,
+} from "../src/prompts"
+
+function mockTTY(value: boolean) {
+  Object.defineProperty(process.stdin, "isTTY", { value, configurable: true })
+}
+
+const blankConfig: ScaffoldCmdConfig = {
+  logLevel: LogLevel.none,
+  name: "",
+  output: "",
+  templates: [],
+  data: {},
+  overwrite: false,
+  subdir: false,
+  dryRun: false,
+  quiet: false,
+  version: false,
+}
+
+describe("prompts", () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+  })
+
+  describe("promptForName", () => {
+    test("calls input prompt and returns result", async () => {
+      vi.mocked(inputMock).mockResolvedValue("my-component")
+      const result = await promptForName()
+      expect(result).toEqual("my-component")
+      expect(inputMock).toHaveBeenCalledOnce()
+    })
+  })
+
+  describe("promptForTemplateKey", () => {
+    test("calls select prompt when multiple keys", async () => {
+      vi.mocked(selectMock).mockResolvedValue("component")
+      const result = await promptForTemplateKey({
+        default: { name: "d", templates: [], output: "" },
+        component: { name: "c", templates: [], output: "" },
+      })
+      expect(result).toEqual("component")
+      expect(selectMock).toHaveBeenCalledOnce()
+    })
+
+    test("returns single key without prompting", async () => {
+      const result = await promptForTemplateKey({
+        default: { name: "d", templates: [], output: "" },
+      })
+      expect(result).toEqual("default")
+      expect(selectMock).not.toHaveBeenCalled()
+    })
+
+    test("throws when config map is empty", async () => {
+      await expect(promptForTemplateKey({})).rejects.toThrow("No templates found")
+    })
+
+    test("presents all keys as choices", async () => {
+      vi.mocked(selectMock).mockResolvedValue("b")
+      await promptForTemplateKey({
+        a: { name: "a", templates: [], output: "" },
+        b: { name: "b", templates: [], output: "" },
+        c: { name: "c", templates: [], output: "" },
+      })
+      const call = vi.mocked(selectMock).mock.calls[0][0] as {
+        choices: { name: string; value: string }[]
+      }
+      expect(call.choices).toEqual([
+        { name: "a", value: "a" },
+        { name: "b", value: "b" },
+        { name: "c", value: "c" },
+      ])
+    })
+  })
+
+  describe("promptForOutput", () => {
+    test("calls input prompt and returns result", async () => {
+      vi.mocked(inputMock).mockResolvedValue("./dist")
+      const result = await promptForOutput()
+      expect(result).toEqual("./dist")
+      expect(inputMock).toHaveBeenCalledOnce()
+    })
+  })
+
+  describe("promptForTemplates", () => {
+    test("parses comma-separated input into array", async () => {
+      vi.mocked(inputMock).mockResolvedValue("src/templates, lib/other")
+      const result = await promptForTemplates()
+      expect(result).toEqual(["src/templates", "lib/other"])
+    })
+
+    test("handles single template", async () => {
+      vi.mocked(inputMock).mockResolvedValue("src/templates")
+      const result = await promptForTemplates()
+      expect(result).toEqual(["src/templates"])
+    })
+
+    test("trims whitespace and filters empty entries", async () => {
+      vi.mocked(inputMock).mockResolvedValue("  a , , b  ,  ")
+      const result = await promptForTemplates()
+      expect(result).toEqual(["a", "b"])
+    })
+  })
+
+  describe("isInteractive", () => {
+    test("returns a boolean", () => {
+      expect(typeof isInteractive()).toBe("boolean")
+    })
+  })
+
+  describe("promptForMissingConfig", () => {
+    test("prompts for all missing values when interactive", async () => {
+      mockTTY(true)
+      vi.mocked(inputMock)
+        .mockResolvedValueOnce("my-app") // name
+        .mockResolvedValueOnce("./output") // output
+        .mockResolvedValueOnce("src/tpl") // templates
+
+      const config = { ...blankConfig }
+      const result = await promptForMissingConfig(config)
+      expect(result.name).toEqual("my-app")
+      expect(result.output).toEqual("./output")
+      expect(result.templates).toEqual(["src/tpl"])
+      expect(inputMock).toHaveBeenCalledTimes(3)
+    })
+
+    test("does not prompt for values already provided", async () => {
+      mockTTY(true)
+
+      const config = {
+        ...blankConfig,
+        name: "already-set",
+        output: "./out",
+        templates: ["tpl"],
+      }
+      const result = await promptForMissingConfig(config)
+      expect(result.name).toEqual("already-set")
+      expect(result.output).toEqual("./out")
+      expect(result.templates).toEqual(["tpl"])
+      expect(inputMock).not.toHaveBeenCalled()
+    })
+
+    test("prompts for template key when multiple templates and no key", async () => {
+      mockTTY(true)
+      vi.mocked(inputMock)
+        .mockResolvedValueOnce("name") // name
+        .mockResolvedValueOnce("./output") // output
+        .mockResolvedValueOnce("src/tpl") // templates
+      vi.mocked(selectMock).mockResolvedValue("component")
+
+      const configMap = {
+        default: { name: "d", templates: [], output: "" },
+        component: { name: "c", templates: [], output: "" },
+      }
+      const config = { ...blankConfig }
+      const result = await promptForMissingConfig(config, configMap)
+      expect(result.key).toEqual("component")
+    })
+
+    test("does not prompt for template key when already set", async () => {
+      mockTTY(true)
+
+      const configMap = {
+        default: { name: "d", templates: [], output: "" },
+        component: { name: "c", templates: [], output: "" },
+      }
+      const config = {
+        ...blankConfig,
+        name: "test",
+        output: "./out",
+        templates: ["tpl"],
+        key: "default",
+      }
+      const result = await promptForMissingConfig(config, configMap)
+      expect(result.key).toEqual("default")
+      expect(selectMock).not.toHaveBeenCalled()
+    })
+
+    test("does not prompt for template key when only one template", async () => {
+      mockTTY(true)
+
+      const configMap = {
+        default: { name: "d", templates: [], output: "" },
+      }
+      const config = { ...blankConfig, name: "test", output: "./out", templates: ["tpl"] }
+      const result = await promptForMissingConfig(config, configMap)
+      expect(result.key).toBeUndefined()
+      expect(selectMock).not.toHaveBeenCalled()
+    })
+
+    test("does not prompt in non-interactive mode", async () => {
+      mockTTY(false)
+
+      const config = { ...blankConfig }
+      const result = await promptForMissingConfig(config)
+      expect(result.name).toEqual("")
+      expect(result.output).toEqual("")
+      expect(result.templates).toEqual([])
+      expect(inputMock).not.toHaveBeenCalled()
+    })
+
+    test("does not prompt for config key when no config map provided", async () => {
+      mockTTY(true)
+      vi.mocked(inputMock)
+        .mockResolvedValueOnce("name")
+        .mockResolvedValueOnce("./out")
+        .mockResolvedValueOnce("tpl")
+
+      const config = { ...blankConfig }
+      const result = await promptForMissingConfig(config)
+      expect(result.key).toBeUndefined()
+      expect(selectMock).not.toHaveBeenCalled()
+    })
+
+    test("only prompts for missing values, not provided ones", async () => {
+      mockTTY(true)
+      vi.mocked(inputMock).mockResolvedValueOnce("src/tpl") // only templates missing
+
+      const config = { ...blankConfig, name: "app", output: "./out" }
+      const result = await promptForMissingConfig(config)
+      expect(result.name).toEqual("app")
+      expect(result.output).toEqual("./out")
+      expect(result.templates).toEqual(["src/tpl"])
+      expect(inputMock).toHaveBeenCalledOnce()
+    })
+  })
+
+  describe("promptForInputs", () => {
+    test("prompts for required inputs not in existing data", async () => {
+      vi.mocked(inputMock).mockResolvedValueOnce("John")
+      const result = await promptForInputs(
+        { author: { message: "Author name", required: true } },
+        {},
+      )
+      expect(result.author).toEqual("John")
+      expect(inputMock).toHaveBeenCalledOnce()
+    })
+
+    test("skips inputs already provided in data", async () => {
+      const result = await promptForInputs(
+        { author: { message: "Author name", required: true } },
+        { author: "Jane" },
+      )
+      expect(result.author).toEqual("Jane")
+      expect(inputMock).not.toHaveBeenCalled()
+    })
+
+    test("applies default value for optional inputs not in data", async () => {
+      const result = await promptForInputs({ license: { default: "MIT" } }, {})
+      expect(result.license).toEqual("MIT")
+      expect(inputMock).not.toHaveBeenCalled()
+    })
+
+    test("does not apply default when value already exists", async () => {
+      const result = await promptForInputs(
+        { license: { default: "MIT" } },
+        { license: "Apache-2.0" },
+      )
+      expect(result.license).toEqual("Apache-2.0")
+    })
+
+    test("uses input key as message fallback", async () => {
+      vi.mocked(inputMock).mockResolvedValueOnce("val")
+      await promptForInputs({ myField: { required: true } }, {})
+      const call = vi.mocked(inputMock).mock.calls[0][0] as { message: string }
+      expect(call.message).toContain("myField")
+    })
+
+    test("prompts multiple required inputs in order", async () => {
+      vi.mocked(inputMock).mockResolvedValueOnce("John").mockResolvedValueOnce("2.0")
+      const result = await promptForInputs(
+        {
+          author: { message: "Author", required: true },
+          version: { message: "Version", required: true },
+        },
+        {},
+      )
+      expect(result.author).toEqual("John")
+      expect(result.version).toEqual("2.0")
+      expect(inputMock).toHaveBeenCalledTimes(2)
+    })
+
+    test("mixes prompts, defaults, and existing data", async () => {
+      vi.mocked(inputMock).mockResolvedValueOnce("John")
+      const result = await promptForInputs(
+        {
+          author: { message: "Author", required: true },
+          license: { default: "MIT" },
+          description: { message: "Desc", required: true },
+        },
+        { description: "My project" },
+      )
+      expect(result.author).toEqual("John")
+      expect(result.license).toEqual("MIT")
+      expect(result.description).toEqual("My project")
+      expect(inputMock).toHaveBeenCalledOnce()
+    })
+
+    test("preserves existing data keys not in inputs", async () => {
+      const result = await promptForInputs({ license: { default: "MIT" } }, { extra: "value" })
+      expect(result.extra).toEqual("value")
+      expect(result.license).toEqual("MIT")
+    })
+
+    test("required input with default pre-fills prompt", async () => {
+      vi.mocked(inputMock).mockResolvedValueOnce("custom")
+      await promptForInputs({ author: { required: true, default: "Anonymous" } }, {})
+      const call = vi.mocked(inputMock).mock.calls[0][0] as { default?: string }
+      expect(call.default).toEqual("Anonymous")
+    })
+
+    test("select input prompts with options", async () => {
+      vi.mocked(selectMock).mockResolvedValueOnce("MIT")
+      const result = await promptForInputs(
+        {
+          license: {
+            type: "select",
+            message: "License",
+            options: ["MIT", "Apache-2.0", "GPL-3.0"],
+          },
+        },
+        {},
+      )
+      expect(result.license).toEqual("MIT")
+      expect(selectMock).toHaveBeenCalledOnce()
+      const call = vi.mocked(selectMock).mock.calls[0][0] as {
+        choices: { name: string; value: string }[]
+      }
+      expect(call.choices).toEqual([
+        { name: "MIT", value: "MIT" },
+        { name: "Apache-2.0", value: "Apache-2.0" },
+        { name: "GPL-3.0", value: "GPL-3.0" },
+      ])
+    })
+
+    test("select input with object options", async () => {
+      vi.mocked(selectMock).mockResolvedValueOnce("mit")
+      const result = await promptForInputs(
+        {
+          license: {
+            type: "select",
+            options: [
+              { name: "MIT License", value: "mit" },
+              { name: "Apache 2.0", value: "apache" },
+            ],
+          },
+        },
+        {},
+      )
+      expect(result.license).toEqual("mit")
+    })
+
+    test("select input throws when no options", async () => {
+      await expect(promptForInputs({ license: { type: "select" } }, {})).rejects.toThrow(
+        "no options defined",
+      )
+    })
+
+    test("select input skipped when value already provided", async () => {
+      const result = await promptForInputs(
+        { license: { type: "select", options: ["MIT", "Apache"] } },
+        { license: "MIT" },
+      )
+      expect(result.license).toEqual("MIT")
+      expect(selectMock).not.toHaveBeenCalled()
+    })
+
+    test("confirm input prompts and returns boolean", async () => {
+      vi.mocked(confirmMock).mockResolvedValueOnce(true)
+      const result = await promptForInputs(
+        { private: { type: "confirm", message: "Private?" } },
+        {},
+      )
+      expect(result.private).toBe(true)
+      expect(confirmMock).toHaveBeenCalledOnce()
+    })
+
+    test("confirm input with default false", async () => {
+      vi.mocked(confirmMock).mockResolvedValueOnce(false)
+      await promptForInputs({ private: { type: "confirm", default: false } }, {})
+      const call = vi.mocked(confirmMock).mock.calls[0][0] as { default?: boolean }
+      expect(call.default).toBe(false)
+    })
+
+    test("confirm input skipped when value already provided", async () => {
+      const result = await promptForInputs({ private: { type: "confirm" } }, { private: true })
+      expect(result.private).toBe(true)
+      expect(confirmMock).not.toHaveBeenCalled()
+    })
+
+    test("number input prompts and returns number", async () => {
+      vi.mocked(numberMock).mockResolvedValueOnce(8080)
+      const result = await promptForInputs(
+        { port: { type: "number", message: "Port", required: true } },
+        {},
+      )
+      expect(result.port).toBe(8080)
+      expect(numberMock).toHaveBeenCalledOnce()
+    })
+
+    test("number input with default", async () => {
+      vi.mocked(numberMock).mockResolvedValueOnce(3000)
+      await promptForInputs({ port: { type: "number", default: 3000, required: true } }, {})
+      const call = vi.mocked(numberMock).mock.calls[0][0] as { default?: number }
+      expect(call.default).toBe(3000)
+    })
+
+    test("number input skipped when value already provided", async () => {
+      const result = await promptForInputs(
+        { port: { type: "number", required: true } },
+        { port: 9090 },
+      )
+      expect(result.port).toBe(9090)
+      expect(numberMock).not.toHaveBeenCalled()
+    })
+
+    test("mixed input types in one config", async () => {
+      vi.mocked(inputMock).mockResolvedValueOnce("John")
+      vi.mocked(selectMock).mockResolvedValueOnce("MIT")
+      vi.mocked(confirmMock).mockResolvedValueOnce(true)
+      vi.mocked(numberMock).mockResolvedValueOnce(3000)
+
+      const result = await promptForInputs(
+        {
+          author: { type: "text", message: "Author", required: true },
+          license: { type: "select", message: "License", options: ["MIT", "Apache"] },
+          private: { type: "confirm", message: "Private?" },
+          port: { type: "number", message: "Port", required: true },
+        },
+        {},
+      )
+      expect(result.author).toEqual("John")
+      expect(result.license).toEqual("MIT")
+      expect(result.private).toBe(true)
+      expect(result.port).toBe(3000)
+    })
+  })
+
+  describe("resolveInputs", () => {
+    test("returns config unchanged when no inputs defined", async () => {
+      const config: ScaffoldConfig = {
+        name: "test",
+        output: "out",
+        templates: [],
+        data: { foo: "bar" },
+      }
+      const result = await resolveInputs(config)
+      expect(result.data).toEqual({ foo: "bar" })
+    })
+
+    test("applies defaults in non-interactive mode", async () => {
+      mockTTY(false)
+      const config: ScaffoldConfig = {
+        name: "test",
+        output: "out",
+        templates: [],
+        data: {},
+        inputs: {
+          license: { default: "MIT" },
+        },
+      }
+      const result = await resolveInputs(config)
+      expect(result.data?.license).toEqual("MIT")
+      expect(inputMock).not.toHaveBeenCalled()
+    })
+
+    test("does not overwrite existing data with defaults in non-interactive mode", async () => {
+      mockTTY(false)
+      const config: ScaffoldConfig = {
+        name: "test",
+        output: "out",
+        templates: [],
+        data: { license: "Apache-2.0" },
+        inputs: {
+          license: { default: "MIT" },
+        },
+      }
+      const result = await resolveInputs(config)
+      expect(result.data?.license).toEqual("Apache-2.0")
+    })
+
+    test("prompts for required inputs in interactive mode", async () => {
+      mockTTY(true)
+      vi.mocked(inputMock).mockResolvedValueOnce("John")
+      const config: ScaffoldConfig = {
+        name: "test",
+        output: "out",
+        templates: [],
+        data: {},
+        inputs: {
+          author: { message: "Author", required: true },
+        },
+      }
+      const result = await resolveInputs(config)
+      expect(result.data?.author).toEqual("John")
+    })
+  })
+})

tests/scaffold.test.ts

@@ -1,3 +1,14 @@
+import {
+  describe,
+  test,
+  expect,
+  beforeEach,
+  afterEach,
+  beforeAll,
+  afterAll,
+  vi,
+  type MockInstance,
+} from "vitest"
 import mockFs from "mock-fs"
 import FileSystem from "mock-fs/lib/filesystem"
 import Scaffold from "../src/scaffold"
@@ -66,7 +77,8 @@ const fileStructDates = {
   input: {
     "now.txt": "Today is {{ now 'mmm' }}, time is {{ now 'HH:mm' }}",
     "offset.txt": "Yesterday was {{ now 'mmm' -1 'days' }}, time is {{ now 'HH:mm' -1 'days' }}",
-    "custom.txt": "Custom date is {{ date customDate 'mmm' }}, time is {{ date customDate 'HH:mm' }}",
+    "custom.txt":
+      "Custom date is {{ date customDate 'mmm' }}, time is {{ date customDate 'HH:mm' }}",
   },
   output: {},
 }
@@ -79,14 +91,14 @@ const fileStructExcludes = {
   output: {},
 }
 
-function withMock(fileStruct: FileSystem.DirectoryItems, testFn: jest.EmptyFunction): jest.EmptyFunction {
+function withMock(fileStruct: FileSystem.DirectoryItems, testFn: () => void): () => void {
   return () => {
     beforeEach(() => {
       // console.log("Mocking:", fileStruct)
       console = new Console(process.stdout, process.stderr)
 
       mockFs(fileStruct)
-      // logMock = jest.spyOn(console, 'log').mockImplementation((...args) => {
+      // logMock = vi.spyOn(console, 'log').mockImplementation((...args) => {
       //   logsTemp.push(args)
       // })
     })
@@ -99,7 +111,6 @@ function withMock(fileStruct: FileSystem.DirectoryItems, testFn: jest.EmptyFunct
 }
 
 describe("Scaffold", () => {
-
   describe(
     "create subdir",
 
@@ -200,9 +211,9 @@ describe("Scaffold", () => {
   describe(
     "errors",
     withMock(fileStructNormal, () => {
-      let consoleMock1: jest.SpyInstance
+      let consoleMock1: MockInstance
       beforeAll(() => {
-        consoleMock1 = jest.spyOn(console, "error").mockImplementation(() => void 0)
+        consoleMock1 = vi.spyOn(console, "error").mockImplementation(() => void 0)
       })
 
       afterAll(() => {
@@ -238,9 +249,9 @@ describe("Scaffold", () => {
   describe(
     "dry run",
     withMock(fileStructNormal, () => {
-      let consoleMock1: jest.SpyInstance
+      let consoleMock1: MockInstance
       beforeAll(() => {
-        consoleMock1 = jest.spyOn(console, "error").mockImplementation(() => void 0)
+        consoleMock1 = vi.spyOn(console, "error").mockImplementation(() => void 0)
       })
 
       afterAll(() => {
@@ -279,7 +290,8 @@ describe("Scaffold", () => {
     }),
   )
 
-  describe("output structure", () => {
+  describe(
+    "output structure",
     withMock(fileStructNested, () => {
       test("should maintain input structure on output", async () => {
         await Scaffold({
@@ -299,28 +311,33 @@ describe("Scaffold", () => {
 
         const rootFile = readFileSync(join(process.cwd(), "output", "app_name-1.txt"))
         const oneDeepFile = readFileSync(join(process.cwd(), "output", "AppName/app_name-2.txt"))
-        const twoDeepFile = readFileSync(join(process.cwd(), "output", "AppName/moreNesting/app_name-3.txt"))
+        const twoDeepFile = readFileSync(
+          join(process.cwd(), "output", "AppName/moreNesting/app_name-3.txt"),
+        )
         expect(rootFile.toString()).toEqual("This should be in root")
         expect(oneDeepFile.toString()).toEqual("Hello, my value is 1")
         expect(twoDeepFile.toString()).toEqual("Hi! My value is actually NOT 1!")
       })
-    })
+    }),
+  )
 
+  describe(
+    "file exclusion via glob pattern",
     withMock(fileStructExcludes, () => {
-      test("should exclude files", async () => {
+      test("should only include matching files", async () => {
         await Scaffold({
           name: "app_name",
           output: "output",
-          templates: ["input", "!exclude.txt"],
+          templates: ["input/include.*"],
           data: { value: "1" },
           logLevel: "none",
         })
-        const includeFile = readFileSync(join(process.cwd(), "output", "app_name.txt"))
-        expect(includeFile.toString()).toEqual("This file should be included")
-        expect(() => readFileSync(join(process.cwd(), "output", "exclude.txt"))).toThrow()
+        const outputFiles = readdirSync(join(process.cwd(), "output"))
+        expect(outputFiles).toContain("include.txt")
+        expect(outputFiles).not.toContain("exclude.txt")
       })
-    })
-  })
+    }),
+  )
 
   describe(
     "capitalization helpers",
@@ -524,4 +541,705 @@ describe("Scaffold", () => {
       })
     }),
   )
+
+  describe(
+    "name is available in data",
+    withMock(
+      {
+        input: { "file.txt": "Name: {{name}}" },
+        output: {},
+      },
+      () => {
+        test("name is automatically injected into data", async () => {
+          await Scaffold({
+            name: "my_project",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+          })
+          const content = readFileSync(join(process.cwd(), "output", "file.txt")).toString()
+          expect(content).toEqual("Name: my_project")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "data overrides name in data",
+    withMock(
+      {
+        input: { "file.txt": "Name: {{name}}" },
+        output: {},
+      },
+      () => {
+        test("explicit data.name takes precedence", async () => {
+          await Scaffold({
+            name: "original_name",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            data: { name: "custom_name" },
+          })
+          const content = readFileSync(join(process.cwd(), "output", "file.txt")).toString()
+          expect(content).toEqual("Name: custom_name")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "multiple templates",
+    withMock(
+      {
+        template1: { "file1.txt": "From template 1: {{name}}" },
+        template2: { "file2.txt": "From template 2: {{name}}" },
+        output: {},
+      },
+      () => {
+        test("processes multiple template directories", async () => {
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["template1", "template2"],
+            logLevel: "none",
+          })
+          const file1 = readFileSync(join(process.cwd(), "output", "file1.txt")).toString()
+          const file2 = readFileSync(join(process.cwd(), "output", "file2.txt")).toString()
+          expect(file1).toEqual("From template 1: app")
+          expect(file2).toEqual("From template 2: app")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "template with custom data",
+    withMock(
+      {
+        input: { "{{name}}.txt": "Author: {{author}}, Version: {{version}}" },
+        output: {},
+      },
+      () => {
+        test("uses custom data in content and filename", async () => {
+          await Scaffold({
+            name: "my_app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            data: { author: "John", version: "2.0" },
+          })
+          const content = readFileSync(join(process.cwd(), "output", "my_app.txt")).toString()
+          expect(content).toEqual("Author: John, Version: 2.0")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "template with helpers in filenames",
+    withMock(
+      {
+        input: { "{{pascalCase name}}.tsx": "component {{pascalCase name}}" },
+        output: {},
+      },
+      () => {
+        test("applies helpers to filenames", async () => {
+          await Scaffold({
+            name: "my_component",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+          })
+          const content = readFileSync(join(process.cwd(), "output", "MyComponent.tsx")).toString()
+          expect(content).toEqual("component MyComponent")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "template with helpers in directory names",
+    withMock(
+      {
+        input: {
+          "{{kebabCase name}}": {
+            "index.ts": "export from {{name}}",
+          },
+        },
+        output: {},
+      },
+      () => {
+        test("applies helpers to directory names", async () => {
+          await Scaffold({
+            name: "MyComponent",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+          })
+          const content = readFileSync(
+            join(process.cwd(), "output", "my-component", "index.ts"),
+          ).toString()
+          expect(content).toEqual("export from MyComponent")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "deeply nested template structure",
+    withMock(
+      {
+        input: {
+          "root.txt": "root",
+          level1: {
+            "l1.txt": "level 1",
+            level2: {
+              "l2.txt": "level 2",
+              level3: {
+                "l3.txt": "level 3 {{name}}",
+              },
+            },
+          },
+        },
+        output: {},
+      },
+      () => {
+        test("preserves deep nesting", async () => {
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+          })
+          expect(readFileSync(join(process.cwd(), "output", "root.txt")).toString()).toEqual("root")
+          expect(
+            readFileSync(join(process.cwd(), "output", "level1", "l1.txt")).toString(),
+          ).toEqual("level 1")
+          expect(
+            readFileSync(join(process.cwd(), "output", "level1", "level2", "l2.txt")).toString(),
+          ).toEqual("level 2")
+          expect(
+            readFileSync(
+              join(process.cwd(), "output", "level1", "level2", "level3", "l3.txt"),
+            ).toString(),
+          ).toEqual("level 3 app")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "overwrite as function",
+    withMock(
+      {
+        input: {
+          "keep.txt": "new keep",
+          "replace.txt": "new replace",
+        },
+        output: {
+          "keep.txt": "old keep",
+          "replace.txt": "old replace",
+        },
+      },
+      () => {
+        test("per-file overwrite control", async () => {
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            overwrite: (_fullPath, _basedir, basename) => basename === "replace.txt",
+          })
+          expect(readFileSync(join(process.cwd(), "output", "keep.txt")).toString()).toEqual(
+            "old keep",
+          )
+          expect(readFileSync(join(process.cwd(), "output", "replace.txt")).toString()).toEqual(
+            "new replace",
+          )
+        })
+      },
+    ),
+  )
+
+  describe(
+    "multiple custom helpers",
+    withMock(
+      {
+        input: {
+          "file.txt": "{{reverse name}} - {{repeat name}}",
+        },
+        output: {},
+      },
+      () => {
+        test("multiple custom helpers work together", async () => {
+          await Scaffold({
+            name: "abc",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            helpers: {
+              reverse: (text: string) => text.split("").reverse().join(""),
+              repeat: (text: string) => text + text,
+            },
+          })
+          const content = readFileSync(join(process.cwd(), "output", "file.txt")).toString()
+          expect(content).toEqual("cba - abcabc")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "subdirHelper with different helpers",
+    withMock(
+      {
+        input: { "file.txt": "content" },
+        output: {},
+      },
+      () => {
+        test("subdirHelper camelCase", async () => {
+          await Scaffold({
+            name: "my_component",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            subdir: true,
+            subdirHelper: "camelCase",
+          })
+          const content = readFileSync(
+            join(process.cwd(), "output", "myComponent", "file.txt"),
+          ).toString()
+          expect(content).toEqual("content")
+        })
+
+        test("subdirHelper kebabCase", async () => {
+          await Scaffold({
+            name: "MyComponent",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            subdir: true,
+            subdirHelper: "kebabCase",
+          })
+          const content = readFileSync(
+            join(process.cwd(), "output", "my-component", "file.txt"),
+          ).toString()
+          expect(content).toEqual("content")
+        })
+
+        test("subdirHelper snakeCase", async () => {
+          await Scaffold({
+            name: "MyComponent",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            subdir: true,
+            subdirHelper: "snakeCase",
+          })
+          const content = readFileSync(
+            join(process.cwd(), "output", "my_component", "file.txt"),
+          ).toString()
+          expect(content).toEqual("content")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "empty template directory",
+    withMock(
+      {
+        input: {},
+        output: {},
+      },
+      () => {
+        test("handles empty template dir gracefully", async () => {
+          await expect(
+            Scaffold({
+              name: "app",
+              output: "output",
+              templates: ["input"],
+              logLevel: "none",
+            }),
+          ).resolves.toBeUndefined()
+        })
+      },
+    ),
+  )
+
+  describe(
+    "template with special characters in data",
+    withMock(
+      {
+        input: { "file.txt": "Value: {{value}}" },
+        output: {},
+      },
+      () => {
+        test("handles special characters in data values", async () => {
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            data: { value: 'hello & <world> "test"' },
+          })
+          const content = readFileSync(join(process.cwd(), "output", "file.txt")).toString()
+          expect(content).toEqual('Value: hello & <world> "test"')
+        })
+      },
+    ),
+  )
+
+  describe(
+    "beforeWrite with async callback",
+    withMock(
+      {
+        input: { "file.txt": "Hello {{name}}" },
+        output: {},
+      },
+      () => {
+        test("supports async beforeWrite", async () => {
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            beforeWrite: async (content) => {
+              return content.toString().replace("Hello", "Hi")
+            },
+          })
+          const content = readFileSync(join(process.cwd(), "output", "file.txt")).toString()
+          expect(content).toEqual("Hi app")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "beforeWrite receives all arguments",
+    withMock(
+      {
+        input: { "{{name}}.txt": "Template: {{name}}" },
+        output: {},
+      },
+      () => {
+        test("beforeWrite gets content, rawContent, and outputPath", async () => {
+          const beforeWriteSpy = vi.fn().mockReturnValue(undefined)
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            beforeWrite: beforeWriteSpy,
+          })
+          expect(beforeWriteSpy).toHaveBeenCalledTimes(1)
+          const [content, rawContent, outputPath] = beforeWriteSpy.mock.calls[0]
+          expect(content.toString()).toEqual("Template: app")
+          expect(rawContent.toString()).toEqual("Template: {{name}}")
+          expect(outputPath).toContain("app.txt")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "multiple binary files",
+    withMock(
+      {
+        input: {
+          "img1.bin": crypto.randomBytes(5000),
+          "img2.bin": crypto.randomBytes(8000),
+          "text.txt": "regular text {{name}}",
+        },
+        output: {},
+      },
+      () => {
+        test("handles mix of binary and text files", async () => {
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+          })
+          const text = readFileSync(join(process.cwd(), "output", "text.txt")).toString()
+          expect(text).toEqual("regular text app")
+          const bin1 = readFileSync(join(process.cwd(), "output", "img1.bin"))
+          const bin2 = readFileSync(join(process.cwd(), "output", "img2.bin"))
+          expect(bin1.length).toBeGreaterThan(0)
+          expect(bin2.length).toBeGreaterThan(0)
+        })
+      },
+    ),
+  )
+
+  describe(
+    "output with function returning dynamic path",
+    withMock(
+      {
+        input: {
+          "component.tsx": "component {{name}}",
+          "style.css": "style for {{name}}",
+        },
+        output: {},
+      },
+      () => {
+        test("output function can route files to different directories", async () => {
+          await Scaffold({
+            name: "Button",
+            output: (_fullPath, _basedir, basename) => {
+              if (basename.endsWith(".css")) return join("output", "styles")
+              return join("output", "components")
+            },
+            templates: ["input"],
+            logLevel: "none",
+          })
+          const component = readFileSync(
+            join(process.cwd(), "output", "components", "component.tsx"),
+          ).toString()
+          const style = readFileSync(
+            join(process.cwd(), "output", "styles", "style.css"),
+          ).toString()
+          expect(component).toEqual("component Button")
+          expect(style).toEqual("style for Button")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "handlebars block helpers",
+    withMock(
+      {
+        input: {
+          "file.txt": "{{#if showHeader}}Header\n{{/if}}Body for {{name}}",
+        },
+        output: {},
+      },
+      () => {
+        test("supports handlebars block helpers in templates", async () => {
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            data: { showHeader: true },
+          })
+          const content = readFileSync(join(process.cwd(), "output", "file.txt")).toString()
+          expect(content).toEqual("Header\nBody for app")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "glob pattern as template",
+    withMock(
+      {
+        src: {
+          "file1.txt": "text 1 {{name}}",
+          "file2.txt": "text 2 {{name}}",
+          "file3.js": "js {{name}}",
+        },
+        output: {},
+      },
+      () => {
+        test("glob pattern selects matching files only", async () => {
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["src/*.txt"],
+            logLevel: "none",
+          })
+          // glob templates maintain structure relative to the non-glob part
+          const outputFiles = readdirSync(join(process.cwd(), "output", "src"))
+          expect(outputFiles).toContain("file1.txt")
+          expect(outputFiles).toContain("file2.txt")
+          expect(outputFiles).not.toContain("file3.js")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "dotfiles in template",
+    withMock(
+      {
+        input: {
+          ".gitignore": "node_modules",
+          ".env.example": "KEY={{name}}",
+        },
+        output: {},
+      },
+      () => {
+        test("includes dotfiles in output", async () => {
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+          })
+          expect(readFileSync(join(process.cwd(), "output", ".gitignore")).toString()).toEqual(
+            "node_modules",
+          )
+          expect(readFileSync(join(process.cwd(), "output", ".env.example")).toString()).toEqual(
+            "KEY=app",
+          )
+        })
+      },
+    ),
+  )
+
+  describe(
+    "large number of files",
+    withMock(
+      {
+        input: Object.fromEntries(
+          Array.from({ length: 50 }, (_, i) => [`file${i}.txt`, `Content ${i} for {{name}}`]),
+        ),
+        output: {},
+      },
+      () => {
+        test("handles many files", async () => {
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+          })
+          const files = readdirSync(join(process.cwd(), "output"))
+          expect(files.length).toBe(50)
+          expect(readFileSync(join(process.cwd(), "output", "file0.txt")).toString()).toEqual(
+            "Content 0 for app",
+          )
+          expect(readFileSync(join(process.cwd(), "output", "file49.txt")).toString()).toEqual(
+            "Content 49 for app",
+          )
+        })
+      },
+    ),
+  )
+
+  describe(
+    ".scaffoldignore",
+    withMock(
+      {
+        input: {
+          ".scaffoldignore": "*.log\nREADME.md\n",
+          "file.txt": "included",
+          "debug.log": "excluded log",
+          "README.md": "excluded readme",
+          "other.js": "included js",
+        },
+        output: {},
+      },
+      () => {
+        test("excludes files matching .scaffoldignore patterns", async () => {
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+          })
+          const files = readdirSync(join(process.cwd(), "output"))
+          expect(files).toContain("file.txt")
+          expect(files).toContain("other.js")
+          expect(files).not.toContain("debug.log")
+          expect(files).not.toContain("README.md")
+          expect(files).not.toContain(".scaffoldignore")
+        })
+      },
+    ),
+  )
+
+  describe(
+    ".scaffoldignore not copied to output",
+    withMock(
+      {
+        input: {
+          ".scaffoldignore": "*.log",
+          "file.txt": "content",
+        },
+        output: {},
+      },
+      () => {
+        test(".scaffoldignore is never in output", async () => {
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+          })
+          const files = readdirSync(join(process.cwd(), "output"))
+          expect(files).not.toContain(".scaffoldignore")
+          expect(files).toContain("file.txt")
+        })
+      },
+    ),
+  )
+
+  describe(
+    "afterScaffold hook",
+    withMock(
+      {
+        input: { "file.txt": "Hello {{name}}" },
+        output: {},
+      },
+      () => {
+        test("calls function hook with config and files", async () => {
+          const hookFn = vi.fn()
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            afterScaffold: hookFn,
+          })
+          expect(hookFn).toHaveBeenCalledOnce()
+          const ctx = hookFn.mock.calls[0][0]
+          expect(ctx.config.name).toEqual("app")
+          expect(ctx.files.length).toBe(1)
+          expect(ctx.files[0]).toContain("file.txt")
+        })
+
+        test("calls async function hook", async () => {
+          let called = false
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            afterScaffold: async () => {
+              called = true
+            },
+          })
+          expect(called).toBe(true)
+        })
+
+        test("does not call hook when no files written (dry run)", async () => {
+          const hookFn = vi.fn()
+          await Scaffold({
+            name: "app",
+            output: "output",
+            templates: ["input"],
+            logLevel: "none",
+            dryRun: true,
+            afterScaffold: hookFn,
+          })
+          expect(hookFn).toHaveBeenCalledOnce()
+          expect(hookFn.mock.calls[0][0].files.length).toBe(0)
+        })
+
+        test("does not call hook when not provided", async () => {
+          await expect(
+            Scaffold({
+              name: "app",
+              output: "output",
+              templates: ["input"],
+              logLevel: "none",
+            }),
+          ).resolves.toBeUndefined()
+        })
+      },
+    ),
+  )
 })

tests/utils.test.ts

@@ -1,4 +1,5 @@
-import { handleErr, resolve, colorize, TermColor } from "../src/utils"
+import { describe, test, expect } from "vitest"
+import { handleErr, resolve, wrapNoopResolver, colorize, TermColor } from "../src/utils"
 describe("utils", () => {
   describe("resolve", () => {
     test("should resolve function", () => {
@@ -10,6 +11,45 @@ describe("utils", () => {
       expect(resolve(1, null)).toBe(1)
       expect(resolve(2, 1)).toBe(2)
     })
+
+    test("should resolve function with argument transformation", () => {
+      expect(resolve((x: number) => x * 2, 5)).toBe(10)
+    })
+
+    test("should resolve static string", () => {
+      expect(resolve("hello", null)).toBe("hello")
+    })
+
+    test("should resolve static boolean", () => {
+      expect(resolve(true, null)).toBe(true)
+      expect(resolve(false, null)).toBe(false)
+    })
+
+    test("should resolve static object", () => {
+      const obj = { key: "value" }
+      expect(resolve(obj, null)).toBe(obj)
+    })
+
+    test("should resolve function returning object", () => {
+      expect(resolve(() => ({ key: "value" }), null)).toEqual({ key: "value" })
+    })
+
+    test("should pass argument to function", () => {
+      const fn = (config: { name: string }) => config.name
+      expect(resolve(fn, { name: "test" })).toBe("test")
+    })
+
+    test("should resolve zero", () => {
+      expect(resolve(0, null)).toBe(0)
+    })
+
+    test("should resolve null", () => {
+      expect(resolve(null, "anything")).toBe(null)
+    })
+
+    test("should resolve undefined", () => {
+      expect(resolve(undefined, "anything")).toBe(undefined)
+    })
   })
 
   describe("handleErr", () => {
@@ -17,6 +57,44 @@ describe("utils", () => {
       expect(() => handleErr({ name: "test", message: "test" })).toThrow()
       expect(() => handleErr(null as never)).not.toThrow()
     })
+
+    test("should throw the provided error", () => {
+      const err = new Error("test error")
+      expect(() => handleErr(err as unknown as NodeJS.ErrnoException)).toThrow("test error")
+    })
+  })
+
+  describe("wrapNoopResolver", () => {
+    test("should wrap static value in function", () => {
+      const wrapped = wrapNoopResolver("hello")
+      expect(typeof wrapped).toBe("function")
+      expect((wrapped as (_: unknown) => unknown)("anything")).toBe("hello")
+    })
+
+    test("should return function as-is", () => {
+      const fn = (x: string) => x.toUpperCase()
+      const wrapped = wrapNoopResolver(fn)
+      expect(wrapped).toBe(fn)
+    })
+
+    test("should wrap object value", () => {
+      const obj = { key: "value" }
+      const wrapped = wrapNoopResolver(obj)
+      expect(typeof wrapped).toBe("function")
+      expect((wrapped as (_: unknown) => unknown)("anything")).toBe(obj)
+    })
+
+    test("should wrap boolean value", () => {
+      const wrapped = wrapNoopResolver(true)
+      expect(typeof wrapped).toBe("function")
+      expect((wrapped as (_: unknown) => unknown)(null)).toBe(true)
+    })
+
+    test("should wrap number value", () => {
+      const wrapped = wrapNoopResolver(42)
+      expect(typeof wrapped).toBe("function")
+      expect((wrapped as (_: unknown) => unknown)(null)).toBe(42)
+    })
   })
 })
 
@@ -66,4 +144,64 @@ describe("colorize", () => {
     const result = colorize.blue`Hello ${"World"}`
     expect(result).toBe("\x1b[34mHello World\x1b[0m")
   })
+
+  test("should colorize with green", () => {
+    expect(colorize("Hello", "green")).toBe("\x1b[32mHello\x1b[0m")
+  })
+
+  test("should colorize with yellow", () => {
+    expect(colorize("Hello", "yellow")).toBe("\x1b[33mHello\x1b[0m")
+  })
+
+  test("should colorize with magenta", () => {
+    expect(colorize("Hello", "magenta")).toBe("\x1b[35mHello\x1b[0m")
+  })
+
+  test("should colorize with cyan", () => {
+    expect(colorize("Hello", "cyan")).toBe("\x1b[36mHello\x1b[0m")
+  })
+
+  test("should colorize with white", () => {
+    expect(colorize("Hello", "white")).toBe("\x1b[37mHello\x1b[0m")
+  })
+
+  test("should colorize with gray", () => {
+    expect(colorize("Hello", "gray")).toBe("\x1b[90mHello\x1b[0m")
+  })
+
+  test("should colorize with dim", () => {
+    expect(colorize("Hello", "dim")).toBe("\x1b[2mHello\x1b[22m")
+  })
+
+  test("should colorize with italic", () => {
+    expect(colorize("Hello", "italic")).toBe("\x1b[3mHello\x1b[23m")
+  })
+
+  test("should colorize with underline", () => {
+    expect(colorize("Hello", "underline")).toBe("\x1b[4mHello\x1b[24m")
+  })
+
+  test("color functions work as template strings", () => {
+    const name = "World"
+    expect(colorize.green`Hello ${name}`).toBe("\x1b[32mHello World\x1b[0m")
+  })
+
+  test("color functions work with direct call", () => {
+    expect(colorize.yellow("warning")).toBe("\x1b[33mwarning\x1b[0m")
+    expect(colorize.cyan("info")).toBe("\x1b[36minfo\x1b[0m")
+  })
+
+  test("handles empty string", () => {
+    expect(colorize("", "red")).toBe("\x1b[31m\x1b[0m")
+  })
+
+  test("handles special characters", () => {
+    expect(colorize("hello\nworld", "blue")).toBe("\x1b[34mhello\nworld\x1b[0m")
+  })
+
+  test("template string with multiple interpolations", () => {
+    const a = "one"
+    const b = "two"
+    expect(colorize.red`${a} and ${b}`).toBe("\x1b[31mone and two\x1b[0m")
+  })
 })

tests/validate.test.ts

@@ -0,0 +1,231 @@
+import { describe, test, expect, beforeEach, afterEach } from "vitest"
+import mockFs from "mock-fs"
+import { Console } from "console"
+import { validateConfig, validateTemplatePaths, assertConfigValid } from "../src/validate"
+
+const validConfig = {
+  name: "test",
+  templates: ["templates"],
+  output: "output",
+}
+
+describe("validate", () => {
+  describe("validateConfig", () => {
+    test("returns no errors for valid config", () => {
+      expect(validateConfig(validConfig)).toEqual([])
+    })
+
+    test("returns no errors with all optional fields", () => {
+      const errors = validateConfig({
+        ...validConfig,
+        subdir: true,
+        subdirHelper: "camelCase",
+        data: { key: "value" },
+        logLevel: "debug",
+        dryRun: true,
+        overwrite: true,
+        inputs: {
+          author: { type: "text", message: "Author", required: true },
+        },
+      })
+      expect(errors).toEqual([])
+    })
+
+    test("errors on missing name", () => {
+      const errors = validateConfig({ ...validConfig, name: "" })
+      expect(errors.length).toBeGreaterThan(0)
+      expect(errors[0]).toContain("name")
+    })
+
+    test("errors on missing templates", () => {
+      const errors = validateConfig({ ...validConfig, templates: [] })
+      expect(errors.length).toBeGreaterThan(0)
+      expect(errors[0]).toContain("templates")
+    })
+
+    test("errors on invalid logLevel", () => {
+      const errors = validateConfig({ ...validConfig, logLevel: "verbose" })
+      expect(errors.length).toBeGreaterThan(0)
+      expect(errors[0]).toContain("logLevel")
+    })
+
+    test("errors on subdirHelper without subdir", () => {
+      const errors = validateConfig({
+        ...validConfig,
+        subdirHelper: "camelCase",
+      })
+      expect(errors.length).toBeGreaterThan(0)
+      expect(errors[0]).toContain("subdirHelper")
+    })
+
+    test("no error on subdirHelper with subdir", () => {
+      const errors = validateConfig({
+        ...validConfig,
+        subdir: true,
+        subdirHelper: "camelCase",
+      })
+      expect(errors).toEqual([])
+    })
+
+    test("errors on select input without options", () => {
+      const errors = validateConfig({
+        ...validConfig,
+        inputs: {
+          license: { type: "select" },
+        },
+      })
+      expect(errors.length).toBeGreaterThan(0)
+      expect(errors.some((e) => e.includes("select") && e.includes("options"))).toBe(true)
+    })
+
+    test("no error on select input with options", () => {
+      const errors = validateConfig({
+        ...validConfig,
+        inputs: {
+          license: { type: "select", options: ["MIT", "Apache"] },
+        },
+      })
+      expect(errors).toEqual([])
+    })
+
+    test("errors on confirm input with non-boolean default", () => {
+      const errors = validateConfig({
+        ...validConfig,
+        inputs: {
+          flag: { type: "confirm", default: "yes" },
+        },
+      })
+      expect(errors.length).toBeGreaterThan(0)
+      expect(errors.some((e) => e.includes("confirm") && e.includes("boolean"))).toBe(true)
+    })
+
+    test("errors on number input with non-number default", () => {
+      const errors = validateConfig({
+        ...validConfig,
+        inputs: {
+          port: { type: "number", default: "3000" },
+        },
+      })
+      expect(errors.length).toBeGreaterThan(0)
+      expect(errors.some((e) => e.includes("number"))).toBe(true)
+    })
+
+    test("valid input types pass", () => {
+      const errors = validateConfig({
+        ...validConfig,
+        inputs: {
+          a: { type: "text", required: true },
+          b: { type: "select", options: ["x", "y"] },
+          c: { type: "confirm", default: false },
+          d: { type: "number", default: 42 },
+        },
+      })
+      expect(errors).toEqual([])
+    })
+
+    test("accepts function output", () => {
+      const errors = validateConfig({
+        ...validConfig,
+        output: () => "dynamic-output",
+      })
+      expect(errors).toEqual([])
+    })
+
+    test("accepts function overwrite", () => {
+      const errors = validateConfig({
+        ...validConfig,
+        overwrite: () => true,
+      })
+      expect(errors).toEqual([])
+    })
+
+    test("accepts afterScaffold string", () => {
+      const errors = validateConfig({
+        ...validConfig,
+        afterScaffold: "npm install",
+      })
+      expect(errors).toEqual([])
+    })
+
+    test("accepts afterScaffold function", () => {
+      const errors = validateConfig({
+        ...validConfig,
+        afterScaffold: () => {},
+      })
+      expect(errors).toEqual([])
+    })
+  })
+
+  describe("validateTemplatePaths", () => {
+    beforeEach(() => {
+      console = new Console(process.stdout, process.stderr)
+      mockFs({
+        templates: { "file.txt": "content" },
+      })
+    })
+
+    afterEach(() => {
+      mockFs.restore()
+    })
+
+    test("returns no errors for existing paths", async () => {
+      const errors = await validateTemplatePaths(["templates"])
+      expect(errors).toEqual([])
+    })
+
+    test("returns error for missing paths", async () => {
+      const errors = await validateTemplatePaths(["nonexistent"])
+      expect(errors.length).toBe(1)
+      expect(errors[0]).toContain("nonexistent")
+    })
+
+    test("skips glob patterns", async () => {
+      const errors = await validateTemplatePaths(["templates/**/*"])
+      expect(errors).toEqual([])
+    })
+
+    test("skips negation patterns", async () => {
+      const errors = await validateTemplatePaths(["!excluded"])
+      expect(errors).toEqual([])
+    })
+  })
+
+  describe("assertConfigValid", () => {
+    beforeEach(() => {
+      console = new Console(process.stdout, process.stderr)
+      mockFs({
+        templates: { "file.txt": "content" },
+      })
+    })
+
+    afterEach(() => {
+      mockFs.restore()
+    })
+
+    test("does not throw for valid config", async () => {
+      await expect(assertConfigValid(validConfig)).resolves.toBeUndefined()
+    })
+
+    test("throws formatted error for invalid config", async () => {
+      await expect(assertConfigValid({ name: "", templates: [], output: "" })).rejects.toThrow(
+        "Invalid scaffold config",
+      )
+    })
+
+    test("includes all errors in message", async () => {
+      try {
+        await assertConfigValid({ name: "", templates: [], output: "out" })
+      } catch (e) {
+        const msg = (e as Error).message
+        expect(msg).toContain("name")
+        expect(msg).toContain("templates")
+      }
+    })
+
+    test("checks template path existence", async () => {
+      await expect(
+        assertConfigValid({ name: "test", templates: ["missing"], output: "out" }),
+      ).rejects.toThrow("does not exist")
+    })
+  })
+})

vite.config.ts

@@ -0,0 +1,44 @@
+import { defineConfig } from "vite"
+import path from "node:path"
+
+export default defineConfig({
+  build: {
+    lib: {
+      entry: {
+        index: path.resolve(__dirname, "src/index.ts"),
+        cmd: path.resolve(__dirname, "src/cmd.ts"),
+      },
+      formats: ["cjs"],
+    },
+    outDir: "dist",
+    target: "node20",
+    rollupOptions: {
+      // Externalize all node builtins and all dependencies
+      external: [
+        /^node:/, // Node builtins
+        /^[^./]/, // All bare imports (dependencies)
+      ],
+      output: {
+        exports: "named",
+      },
+    },
+    sourcemap: true,
+    minify: false,
+  },
+  resolve: {
+    alias: {
+      "@": path.resolve(__dirname, "src"),
+    },
+  },
+  test: {
+    globals: true,
+    clearMocks: true,
+    coverage: {
+      enabled: true,
+      provider: "v8",
+      reportsDirectory: "coverage",
+      exclude: ["node_modules/", "scaffold.config.js", "dist/", "docs/"],
+    },
+    exclude: ["node_modules", "dist", "docs"],
+  },
+})