update package.json

v1.1

### New features

- Enable custom transformations with `beforeWrite`
- Add built-in date formatting helpers

### Commit log

* add develop branch

* chore: remove unneeded dep

* Update issue templates [skip ci]

* update PR workflow

* implementation of before-write callback + tests

* clean up + update docs

* add explicit function return types

* bump version number

* docs: add table of contents

* correct version number

* update workflows + release alpha

* update README.md [skip ci]

* update README.md [skip ci]

* implement now & custom date helpers

* docs + bump version number

* docs cleanup

* update docs

* accept async beforeWrite callback

* fix docs

* remove redundent check

* fix type import

* update README.md [skip ci]

* bump version number [skip ci]

* update docs [skip ci]

.editorconfig

@@ -0,0 +1,5 @@
+[*]
+tab_width = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true

.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: casraf
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,37 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: bug, needs-triage
+assignees: chenasraf
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+
+1. Prepare templates:
+    ```
+    template contents
+    ```
+2. Run with args/config:
+    ```
+    npx simple-scaffold@latest -t ... -o output TplName
+    ```
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Logs**
+If applicable, paste your logs to help explain your problem.
+To see more logs, run the scaffold with `-v 1` to enable debug logging.
+
+**Desktop (please complete the following information):**
+ - OS: [e.g. iOS]
+- Node.js: [e.g. 16.8]
+ - Simple Scaffold Version [e.g. 1.0.4]
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: enhancement, needs-triage
+assignees: chenasraf
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/workflows/develop.yml

@@ -0,0 +1,52 @@
+name: Alpha Releases
+
+on:
+  push:
+    branches: [develop]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    if: "!contains(github.event.head_commit.message, '[skip ci]')"
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: "12.x"
+      - run: yarn install --frozen-lockfile
+      - run: yarn test
+      - run: yarn build
+      - run: cd ./dist && yarn pack --filename=../package.tgz
+        if: "!contains(github.event.head_commit.message, '[skip publish]')"
+      - uses: Klemensas/action-autotag@stable
+        if: "!contains(github.event.head_commit.message, '[skip publish]')"
+        id: update_tag
+        with:
+          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+          tag_prefix: "v"
+      - name: Publish on NPM
+        uses: JS-DevTools/npm-publish@v1
+        if: "!contains(github.event.head_commit.message, '[skip publish]')"
+        with:
+          package: ./dist/package.json
+          token: "${{ secrets.NPM_TOKEN }}"
+      - name: Create Release
+        if: steps.update_tag.outputs.tagname && !contains(github.event.head_commit.message, '[skip publish]')
+        uses: actions/create-release@v1
+        id: create_release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          prerelease: true
+          tag_name: ${{ steps.update_tag.outputs.tagname }}
+          release_name: Release ${{ steps.update_tag.outputs.tagname }}
+      - name: Upload Release Asset
+        if: steps.update_tag.outputs.tagname && !contains(github.event.head_commit.message, '[skip publish]')
+        id: upload-release-asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./package.tgz
+          asset_name: simple-scaffold ${{ steps.update_tag.outputs.tagname }}.tgz
+          asset_content_type: application/tgz

.github/workflows/pull_requests.yml

@@ -0,0 +1,17 @@
+name: Pull Requests
+
+on:
+  pull_request:
+    branches: [master, develop]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    if: "!contains(github.event.head_commit.message, '[skip ci]')"
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: "12.x"
+      - run: yarn install --frozen-lockfile
+      - run: yarn build
+      - run: yarn test

.github/workflows/release.yml

@@ -0,0 +1,50 @@
+name: Release
+
+on:
+  push:
+    branches: [master]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    if: "!contains(github.event.head_commit.message, '[skip ci]')"
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: "12.x"
+      - run: yarn install --frozen-lockfile
+      - run: yarn test
+      - run: yarn build
+      - run: cd ./dist && yarn pack --filename=../package.tgz
+        if: "!contains(github.event.head_commit.message, '[skip publish]')"
+      - uses: Klemensas/action-autotag@stable
+        if: "!contains(github.event.head_commit.message, '[skip publish]')"
+        id: update_tag
+        with:
+          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+          tag_prefix: "v"
+      - name: Publish on NPM
+        uses: JS-DevTools/npm-publish@v1
+        with:
+          package: ./dist/package.json
+          token: "${{ secrets.NPM_TOKEN }}"
+      - name: Create Release
+        if: steps.update_tag.outputs.tagname && !contains(github.event.head_commit.message, '[skip publish]')
+        uses: actions/create-release@v1
+        id: create_release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ steps.update_tag.outputs.tagname }}
+          release_name: Release ${{ steps.update_tag.outputs.tagname }}
+      - name: Upload Release Asset
+        if: steps.update_tag.outputs.tagname && !contains(github.event.head_commit.message, '[skip publish]')
+        id: upload-release-asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./package.tgz
+          asset_name: simple-scaffold ${{ steps.update_tag.outputs.tagname }}.tgz
+          asset_content_type: application/tgz

.gitignore

@@ -57,4 +57,7 @@ typings/
 # dotenv environment variables file
 .env
 
-examples/test-output
+examples/test-output/**/*
+dist/
+.DS_Store
+tmp/

.markdownlint.json

@@ -0,0 +1,8 @@
+{
+  "MD013": {
+    "line_length": 100,
+    "tables": false,
+    "code_blocks": false
+  },
+  "MD033": false
+}

.prettierrc

@@ -0,0 +1,5 @@
+{
+  "semi": false,
+  "printWidth": 120,
+  "tabWidth": 2
+}

.vscode/settings.json

@@ -1,3 +1,14 @@
 {
-  "typescript.tsdk": "./node_modules/typescript/lib"
+  "typescript.tsdk": "./node_modules/typescript/lib",
+  "npm.packageManager": "yarn",
+  "cSpell.words": [
+    "massarg",
+    "myname",
+    "nobrace",
+    "nocomment",
+    "nodir",
+    "noext",
+    "nonegate",
+    "subdir"
+  ]
 }

.vscode/tasks.json

@@ -1,7 +1,53 @@
 {
-  "version": "0.1.0",
-  "command": "webpack",
-  "isShellCommand": true,
-  "args": [],
-  "showOutput": "always"
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "script": "build",
+      "label": "build",
+      "type": "npm",
+      "problemMatcher": [],
+    },
+    {
+      "script": "dev",
+      "label": "dev",
+      "type": "npm",
+      "problemMatcher": [],
+    },
+    {
+      "script": "start",
+      "label": "start",
+      "type": "npm",
+      "problemMatcher": [],
+    },
+    {
+      "script": "test",
+      "label": "test",
+      "type": "npm",
+      "problemMatcher": [],
+    },
+    {
+      "command": "yarn test --watchAll",
+      "label": "yarn test --watchAll",
+      "type": "shell",
+      "problemMatcher": [],
+    },
+    {
+      "script": "cmd",
+      "label": "cmd",
+      "type": "npm",
+      "problemMatcher": [],
+    },
+    {
+      "script": "build-test",
+      "label": "build-test",
+      "type": "npm",
+      "problemMatcher": [],
+    },
+    {
+      "script": "build-cmd",
+      "label": "build-cmd",
+      "type": "npm",
+      "problemMatcher": [],
+    },
+  ],
 }

MIGRATION.md

@@ -0,0 +1,21 @@
+# Migrating from 0.x to 1.0
+
+In Simple Scaffold v1.0, the entire codebase was overhauled, yet usage remains mostly the same
+between versions. With these notable exceptions:
+
+- Some of the argument names have changed
+- Template syntax has been improved
+- The command to run Scaffold has been simplified from `new SimpleScaffold(opts).run()` to `SimpleScaffold(opts)`, which now returns a promise that you can await to know when the process has been completed.
+
+## Argument changes
+
+- `locals` has been renamed to `data`. The appropriate command line args have been updated as
+  well to `--data` | `-d`.
+
+## Template syntax changes
+
+Simple Scaffold still uses Handlebars.js to handle template content and file names. However, helpers
+have been added to remove the need for you to pre-process the template data on simple use-cases such
+as case type manipulation (converting to camel case, snake case, etc)
+
+See the readme for the full information on how to use these helpers and which are available.

README.md

@@ -1,47 +1,394 @@
-# scaffolder
-Scaffolder allows you to create your structured files based on templates.
+# Simple Scaffold
+
+Simple Scaffold allows you to generate any set of files in the easiest way possible with simple commands.
+
+It is completely framework agnostic so you can use it for anything from a few simple files to an
+entire app boilerplate setup.
+
+Simply organize your commonly-created files in their original structure, and running Simple Scaffold
+will copy the files to the output path, while replacing values (such as component or app name, or
+other custom data) inside the paths or contents of the files using Handlebars.js syntax.
+
+<br />
+
+<details>
+  <summary>Table of contents</summary>
+
+- [Simple Scaffold](#simple-scaffold)
+  - [Install](#install)
+  - [Use as a command line tool](#use-as-a-command-line-tool)
+    - [Command Line Options](#command-line-options)
+  - [Use in Node.js](#use-in-nodejs)
+    - [Node-specific options](#node-specific-options)
+  - [Preparing files](#preparing-files)
+    - [Template files](#template-files)
+    - [Variable/token replacement](#variabletoken-replacement)
+    - [Built-in Helpers](#built-in-helpers)
+      - [Capitalization Helpers](#capitalization-helpers)
+      - [Date helpers](#date-helpers)
+    - [Custom Helpers](#custom-helpers)
+  - [Examples](#examples)
+    - [Command Example](#command-example)
+    - [Example Scaffold Input](#example-scaffold-input)
+      - [Input Directory structure](#input-directory-structure)
+      - [Contents of `project/scaffold/{{Name}}.jsx`](#contents-of-projectscaffoldnamejsx)
+    - [Example Scaffold Output](#example-scaffold-output)
+    - [Output directory structure](#output-directory-structure)
+      - [Contents of `project/scaffold/MyComponent/MyComponent.jsx`](#contents-of-projectscaffoldmycomponentmycomponentjsx)
+  - [Contributing](#contributing)
+
+</details>
+
+---
 
 ## Install
-You can either use it as a command line tool or import into your own code and run from there.
 
-You can install simple-scaffold globally like so:
+You can either use it as a command line tool or import into your own code and run from there.
 
 ```bash
 # npm
-npm install -g simple-scaffold
+npm install [-g] simple-scaffold
 # yarn
-yarn global add simple-scaffold
+yarn [global] add simple-scaffold
+# run without installing
+npx simple-scaffold@latest <...args>
 ```
 
 ## Use as a command line tool
-#### Command line options
+
+### Command Line Options
+
+```plaintext
+Usage: simple-scaffold [options]
+
+Create structured files based on templates.
+
+Options:
+
+  --help|-h                       Display help information
+
+  --name|-n                       Name to be passed to the generated files. {{name}} and
+                                  {{Name}} inside contents and file names will be replaced
+                                  accordingly.
+
+  --output|-o                     Path to output to. If --create-sub-folder is enabled,
+                                  the subfolder will be created inside this path.
+                                  (default: current dir)
+
+  --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                  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.
+
+  --create-sub-folder|-s          Create subfolder with the input name
+                                  (default: false)
+
+  --sub-folder-name-helper|-sh    Default helper to apply to subfolder name when using
+                                  `--create-sub-folder true`.
+
+  --quiet|-q                      Suppress output logs (Same as --verbose 0)
+                                  (default: false)
+
+  --verbose|-v                    Determine amount of logs to display. The values are:
+                                  0 (none) | 1 (debug) | 2 (info) | 3 (warn) | 4
+                                  (error). The provided level will display messages of
+                                  the same level or higher. (default:
+                                  2)
+
+  --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)
+```
+
+You can also add this as a script in your `package.json`:
+
+```json
+{
+  "scripts": {
+    "scaffold": "npx simple-scaffold@latest -t scaffolds/component/**/* -o src/components -d '{\"myProp\": \"propName\", \"myVal\": 123}'"
+  }
+}
+```
+
+## Use in Node.js
+
+You can also build the scaffold yourself, if you want to create more complex arguments or scaffold
+groups - simply pass a config object to the Scaffold function when you are ready to start.
+
+The config takes similar arguments to the command line:
+
+```typescript
+import Scaffold from "simple-scaffold"
+
+const config = {
+  name: "component",
+  templates: [path.join(__dirname, "scaffolds", "component")],
+  output: path.join(__dirname, "src", "components"),
+  createSubFolder: true,
+  subFolderNameHelper: "upperCase"
+  data: {
+    property: "value",
+  },
+  helpers: {
+    twice: (text) => [text, text].join(" ")
+  },
+  beforeWrite: (content, rawContent, outputPath) => content.toString().toUpperCase()
+}
+
+const scaffold = Scaffold(config)
+```
+
+### Node-specific options
+
+In addition to all the options available in the command line, there are some Node/JS-specific
+options available:
+
+| Option        | Type                                                                                                                                   | Description                                                                                                                                                                                                                                                                                                             |
+| ------------- | -------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `output`      |                                                                                                                                        | In addition to being passed the same as CLI, it may also be passed a function for each input file to output into a dynamic path: `{ output: (fullPath, baseDir, baseName) => path.resolve(baseDir, baseName) }`                                                                                                         |
+| `helpers`     | `Record<string, (string) => string>`                                                                                                   | Helpers are simple functions that transform your `data` variables into other values. See [Helpers](#helpers) for the list of default helpers, or add your own to be loaded into the template parser.                                                                                                                    |
+| `beforeWrite` | `(content: Buffer, rawContent: Buffer, outputPath: string) => Promise<String \| Buffer \| undefined> \| String \| Buffer \| undefined` | Supply this function to override the final output contents of each of your files, allowing you to add more pre-processing to your generator pipeline. The return value of this function will replace the output content of the respective file, which you may discriminate (if needed) using the `outputPath` argument. |
+
+## Preparing files
+
+### Template files
+
+Put your template files anywhere, and fill them with tokens for replacement.
+
+Each template (not file) in the config array is parsed individually, and copied to the output
+directory. If a single template path contains multiple files (e.g. if you use a folder path or a
+glob pattern), the first directory up the tree of that template will become the base inside the
+defined output path for that template, while copying files recursively and maintaining their
+relative structure.
+
+Examples:
+
+> In the following examples, the config `name` is `AppName`, and the config `output` is `src`.
+
+| Input template                | Files in template                                      | Output path(s)                                               |
+| ----------------------------- | ------------------------------------------------------ | ------------------------------------------------------------ |
+| `./templates/{{ name }}.txt`  | `./templates/{{ name }}.txt`                           | `src/AppName.txt`                                            |
+| `./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`                               |
+
+### Variable/token replacement
+
+Scaffolding will replace `{{ varName }}` in both the file name and its contents and put the
+transformed files in the output directory.
+
+The data available for the template parser is the data you pass to the `data` config option (or
+`--data` argument in CLI).
+
+For example, using the following command:
 
 ```bash
-simple-scaffold MyComponent --template scaffolds/component \
-    --output src/components \
-    --locals myProp="propname",myVal=123
+npx simple-scaffold@latest \
+  --templates templates/components/{{name}}.jsx \
+  --output src/components \
+  --create-sub-folder true \
+  MyComponent
 ```
 
-##### `--template`
-A glob pattern of template files to load.
-
-
-A template file may be of any type and extension, and supports [Handlebars](https://handlebarsjs.com) as a parsing engine for the file names and contents, so you may customize both with variables from your configuration.
-
-You may load more than one template list by simple adding more `--template` arguments.
-
-##### `--output`
-The output directory to put the new files in. They will attempt to maintain their regular structure as they are found, if possible.
-
-Your new scaffold will be placed under a directory with the scaffold name from the argumemts.
-
-You may also pass a function to transform the output path for each file individually.
-This function takes 2 arguments: filename, and base glob path
-
-##### `--locals`
-You may set local variables to be pushed into the template and replaced.
-The format for the value of this argument is:
+Will output a file with the path:
 
+```plaintext
+<working_dir>/src/components/MyComponent.jsx
 ```
-property=value[,property=value[,...]]
+
+The contents of the file will be transformed in a similar fashion.
+
+Your `data` will be pre-populated with the following:
+
+- `{{Name}}`: PascalCase of the component name
+- `{{name}}`: raw name of the component as you entered it
+
+> Simple-Scaffold uses [Handlebars.js](https://handlebarsjs.com/) for outputting the file contents.
+> Any `data` you add in the config will be available for use with their names wrapped in
+> `{{` and `}}`. Other Handlebars built-ins such as `each`, `if` and `with` are also supported, see
+> [Handlebars.js Language Features](https://handlebarsjs.com/guide/#language-features) for more
+> information.
+
+### Built-in Helpers
+
+Simple-Scaffold provides some built-in text transformation filters usable by handleBars.
+
+For example, you may use `{{ snakeCase name }}` inside a template file or filename, and it will
+replace `My Name` with `my_name` when producing the final value.
+
+#### Capitalization Helpers
+
+| Helper name  | Example code            | Example output |
+| ------------ | ----------------------- | -------------- |
+| [None]       | `{{ name }}`            | my name        |
+| `camelCase`  | `{{ camelCase name }}`  | myName         |
+| `snakeCase`  | `{{ snakeCase name }}`  | my_name        |
+| `startCase`  | `{{ startCase name }}`  | My Name        |
+| `kebabCase`  | `{{ kebabCase name }}`  | my-name        |
+| `hyphenCase` | `{{ hyphenCase name }}` | my-name        |
+| `pascalCase` | `{{ pascalCase name }}` | MyName         |
+| `upperCase`  | `{{ upperCase name }}`  | MY NAME        |
+| `lowerCase`  | `{{ lowerCase name }}`  | my name        |
+
+#### Date helpers
+
+| Helper name                      | Description                                                      | Example code                                                     | Example output     |
+| -------------------------------- | ---------------------------------------------------------------- | ---------------------------------------------------------------- | ------------------ |
+| `now`                            | Current date with format                                         | `{{ now "yyyy-MM-dd HH:mm" }}`                                   | `2042-01-01 15:00` |
+| `now` (with offset)              | Current date with format, and with offset                        | `{{ now "yyyy-MM-dd HH:mm" -1 "hours" }}`                        | `2042-01-01 14:00` |
+| `date`                           | Custom date with format                                          | `{{ date "2042-01-01T15:00:00Z" "yyyy-MM-dd HH:mm" }}`           | `2042-01-01 15:00` |
+| `date` (with offset)             | Custom date with format, and with offset                         | `{{ date "2042-01-01T15:00:00Z" "yyyy-MM-dd HH:mm" -1 "days" }}` | `2041-31-12 15:00` |
+| `date` (with date from `--data`) | Custom date with format, with data from the `data` config option | `{{ date myCustomDate "yyyy-MM-dd HH:mm" }}`                     | `2042-01-01 12:00` |
+
+Further details:
+
+- We use [`date-fns`](https://date-fns.org/docs/) for parsing/manipulating the dates.
+  If you want more information on the date tokens to use, refer to
+  [their format documentation](https://date-fns.org/docs/format).
+
+- The date helper format takes the following arguments:
+
+    ```typescript
+    (
+      date: string,
+      format: string,
+      offsetAmount?: number,
+      offsetType?: "years" | "months" | "weeks" | "days" | "hours" | "minutes" | "seconds"
+    )
+    ```
+
+- **The now helper** (for current time) takes the same arguments, minus the first one (`date`) as
+  it is implicitly the current date.
+
+### Custom Helpers
+
+You may also add your own custom helpers using the `helpers` options when using the JS API (rather
+than the CLI). The `helpers` option takes an object whose keys are helper names, and values are
+the transformation functions. For example, `upperCase` is implemented like so:
+
+```typescript
+config.helpers = {
+  upperCase: (text) => text.toUpperCase(),
+}
 ```
+
+All of the above helpers (built in and custom) will also be available to you when using
+`subFolderNameHelper` (`--sub-folder-name-helper`/`-sh`) as a possible value.
+
+> To see more information on how helpers work and more features, see
+> [Handlebars.js docs](https://handlebarsjs.com/guide/#custom-helpers).
+
+## Examples
+
+### Command Example
+
+```bash
+simple-scaffold MyComponent \
+    -t project/scaffold/**/* \
+    -o src/components \
+    -d '{"className": "myClassName"}'
+    MyComponent
+```
+
+### Example Scaffold Input
+
+#### Input Directory structure
+
+```plaintext
+- project
+  - scaffold
+    - {{Name}}.js
+  - src
+    - components
+    - ...
+```
+
+#### Contents of `project/scaffold/{{Name}}.jsx`
+
+```typescriptreact
+import React from 'react'
+
+export default {{camelCase name}}: React.FC = (props) => {
+  return (
+    <div className="{{className}}">{{camelCase name}} Component</div>
+  )
+}
+```
+
+### Example Scaffold Output
+
+### Output directory structure
+
+```plaintext
+- project
+  - src
+    - components
+      - MyComponent
+        - MyComponent.js
+    - ...
+```
+
+With `createSubFolder = false`:
+
+```plaintext
+- project
+  - src
+    - components
+      - MyComponent.js
+    - ...
+```
+
+#### Contents of `project/scaffold/MyComponent/MyComponent.jsx`
+
+```typescriptreact
+import React from 'react'
+
+export default MyComponent: React.FC = (props) => {
+  return (
+    <div className="myClassName">MyComponent Component</div>
+  )
+}
+```
+
+## Contributing
+
+I am developing this package on my free time, so any support, whether code, issues, or just stars
+is very helpful to sustaining its life. If you would like to donate a bit to help keep the project
+alive, I would be very thankful!
+
+<a href='https://ko-fi.com/casraf' target='_blank'>
+  <img height='36' style='border:0px;height:36px;'
+    src='https://cdn.ko-fi.com/cdn/kofi1.png?v=3'
+    alt='Buy Me a Coffee at ko-fi.com' />
+</a>
+
+I welcome any issues or pull requests on GitHub. If you find a bug, or would like a new feature,
+don't hesitate to open an appropriate issue and I will do my best to reply promptly.
+
+If you are a developer and want to contribute code, here are some starting tips:
+
+1. Fork this repository
+2. Run `yarn install`
+3. Run `yarn dev` to start file watch mode
+4. Make any changes you would like
+5. Create tests for your changes
+6. Update the relevant documentation (readme, code comments, type comments)
+7. Create a PR on upstream
+
+Some tips on getting around the code:
+
+- Use `yarn dev` for development - it runs TypeScript compile in watch mode, allowing you to make
+  changes and immediately be able to try them using `yarn cmd`.
+- Use `yarn build` to build the output
+- Use `yarn test` to run tests
+- Use `yarn cmd` to use the CLI feature of Simple Scaffold from within the root directory,
+  enabling you to test different behaviors. See `yarn cmd -h` for more information.
+
+  > This requires an updated build, and does not trigger one itself. Either use `yarn dev` to watch
+  > for changes and build, or `yarn build` before running this, or use `yarn build-cmd` instead,
+  > which triggers a build right before running the command with the rest of the given arguments.

babel.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+  plugins: ["@babel/plugin-proposal-nullish-coalescing-operator"],
+}

cmd.ts

@@ -1,86 +0,0 @@
-import SimpleScaffold from './scaffold'
-import * as fs from 'fs'
-import IScaffold from './index'
-
-const args = process.argv.slice(2)
-
-class ScaffoldCmd {
-  private config: IScaffold.IConfig
-
-  constructor() {
-    this.config = this.getOptionsFromArgs()
-  }
-
-  private getOptionsFromArgs(): IScaffold.IConfig {
-    let skipNext = false
-    const options = {} as any
-
-    args.forEach((arg, i) => {
-      if (skipNext) {
-        skipNext = false
-        return
-      }
-
-      if (arg.slice(0, 2) == '--') {
-        skipNext = true
-        let value: string
-
-        if (arg.indexOf('=') >= 0) {
-          value = arg.split('=').slice(1).join('')
-        } else if (args.length >= i + 1 && args[i + 1] && args[i + 1].slice(0, 2) !== '--') {
-          value = args[i + 1]
-        } else {
-          value = 'true'
-        }
-
-        const argName = arg.slice(2)
-        options[argName] = this.getArgValue(argName, value, options)
-      } else {
-        if (!options.name) {
-          options.name = arg
-        } else {
-          throw new TypeError(`Invalid argument: ${arg}`)
-        }
-      }
-    })
-
-    if (!['name', 'templates', 'output'].every(o => options[o] !== undefined)) {
-      throw new Error(`Config is missing keys: ${JSON.stringify(options)}`)
-    }
-
-    return options
-  }
-
-  private getArgValue(arg: string, value: string, options: IScaffold.IConfig) {
-    switch (arg) {
-      case 'templates':
-        return (options.templates || []).concat([value])
-      case 'output':
-        return value
-      case 'locals':
-        const split = value.split(',')
-        const locals = options.locals || {}
-        for (const item of split) {
-          const [k, v] = item.split('=')
-          locals[k] = v
-        }
-        return locals
-      default:
-        throw TypeError(`arguments invalid for config: arg=\`${arg}\`, value=\`${value}\``)
-    }
-  }
-
-  public run() {
-    const config: IScaffold.IConfig = this.config
-    console.info('Config:', config)
-
-    const scf = new SimpleScaffold({
-      name: config.name,
-      templates: config.templates,
-      output: config.output,
-      locals: config.locals,
-    }).run()
-  }
-}
-
-new ScaffoldCmd().run()

dist/dist/scaffold.d.ts

@@ -1,13 +0,0 @@
-import IScaffold from './index';
-declare class SimpleScaffold {
-    private config;
-    private locals;
-    constructor(config: IScaffold.IConfig);
-    private parseLocals(text);
-    private fileList(input);
-    private getFileContents(filePath);
-    private getOutputPath(file, basePath);
-    private writeFile(filePath, fileContents);
-    run(): void;
-}
-export default SimpleScaffold;

dist/scaffold.js

@@ -1,2 +0,0 @@
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-//# sourceMappingURL=scaffold.js.map

dist/test.js

@@ -1,2 +0,0 @@
-!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.library=t():e.library=t()}(this,function(){return function(e){function t(o){if(n[o])return n[o].exports;var r=n[o]={i:o,l:!1,exports:{}};return e[o].call(r.exports,r,r.exports,t),r.l=!0,r.exports}var n={};return t.m=e,t.c=n,t.d=function(e,n,o){t.o(e,n)||Object.defineProperty(e,n,{configurable:!1,enumerable:!0,get:o})},t.n=function(e){var n=e&&e.__esModule?function(){return e.default}:function(){return e};return t.d(n,"a",n),n},t.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},t.p="",t(t.s=5)}([function(e,t){e.exports=require("path")},function(e,t,n){"use strict";var o=this&&this.__generator||function(e,t){function n(e){return function(t){return o([e,t])}}function o(n){if(r)throw new TypeError("Generator is already executing.");for(;u;)try{if(r=1,i&&(s=i[2&n[0]?"return":n[0]?"throw":"next"])&&!(s=s.call(i,n[1])).done)return s;switch(i=0,s&&(n=[0,s.value]),n[0]){case 0:case 1:s=n;break;case 4:return u.label++,{value:n[1],done:!1};case 5:u.label++,i=n[1],n=[0];continue;case 7:n=u.ops.pop(),u.trys.pop();continue;default:if(s=u.trys,!(s=s.length>0&&s[s.length-1])&&(6===n[0]||2===n[0])){u=0;continue}if(3===n[0]&&(!s||n[1]>s[0]&&n[1]<s[3])){u.label=n[1];break}if(6===n[0]&&u.label<s[1]){u.label=s[1],s=n;break}if(s&&u.label<s[2]){u.label=s[2],u.ops.push(n);break}s[2]&&u.ops.pop(),u.trys.pop();continue}n=t.call(e,u)}catch(e){n=[6,e],i=0}finally{r=s=0}if(5&n[0])throw n[1];return{value:n[0]?n[1]:void 0,done:!0}}var r,i,s,a,u={label:0,sent:function(){if(1&s[0])throw s[1];return s[1]},trys:[],ops:[]};return a={next:n(0),throw:n(1),return:n(2)},"function"==typeof Symbol&&(a[Symbol.iterator]=function(){return this}),a};Object.defineProperty(t,"__esModule",{value:!0});var r=n(2),i=n(0),s=n(3),a=n(4),u=function(){function e(e){this.locals={};var t={name:"scaffold",templates:[],output:process.cwd()};this.config=Object.assign({},t,e);var n={Name:this.config.name[0].toUpperCase()+this.config.name.slice(1),name:this.config.name[0].toLowerCase()+this.config.name.slice(1)};this.locals=Object.assign({},n,e.locals)}return e.prototype.parseLocals=function(e){return a.compile(e,{noEscape:!0})(this.locals)},e.prototype.fileList=function(e){var t,n,r,a,u,c,l,f,p;return o(this,function(o){switch(o.label){case 0:t=0,n=e,o.label=1;case 1:if(!(t<n.length))return[3,6];r=n[t],a=s.sync(r).map(function(e){return"/"==e[0]?e:i.join(process.cwd(),e)}),u=r.indexOf("*"),c=r,u>=0&&(c=r.slice(0,u-1)),l=0,f=a,o.label=2;case 2:return l<f.length?(p=f[l],[4,{base:c,file:p}]):[3,5];case 3:o.sent(),o.label=4;case 4:return l++,[3,2];case 5:return t++,[3,1];case 6:return[2]}})},e.prototype.getFileContents=function(e){return r.readFileSync(e).toString()},e.prototype.getOutputPath=function(e,t){var n;if("function"==typeof this.config.output)n=this.config.output(e,t);else{var o=this.config.output+"/"+this.config.name+"/",r=e.indexOf(t),i=e;r>=0&&(i=e.slice(r+t.length+1)),n=o+i}return this.parseLocals(n)},e.prototype.writeFile=function(e,t){r.existsSync(i.dirname(e))||r.mkdirSync(i.dirname(e)),console.info("Writing file:",e),r.writeFileSync(e,t,{encoding:"utf-8"})},e.prototype.run=function(){console.log("Generating scaffold: "+this.config.name+"...");for(var e,t=this.fileList(this.config.templates),n=0;e=t.next().value;){n++;var o=e.file,r=e.base,i=this.getOutputPath(o,r),s=this.getFileContents(o),a=this.parseLocals(s);this.writeFile(i,a),console.info("Parsing:",{file:o,base:r,outputPath:i,outputContents:a.replace("\n","\\n")})}if(!n)throw new Error("No files to scaffold!");console.log("Done")},e}();t.default=u},function(e,t){e.exports=require("fs")},function(e,t){e.exports=require("glob")},function(e,t){e.exports=require("handlebars")},function(e,t,n){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var o=n(1),r=n(0),i=r.join(process.cwd(),"examples");new o.default({templates:[i+"/test-input/Component/**/*"],output:i+"/test-output",locals:{property:"myProp",value:'"value"'}}).run()}])});
-//# sourceMappingURL=test.js.map

examples/test-input/Component/inner/inner-{{name}}.txt

@@ -0,0 +1 @@
+{{name}}

examples/test-input/Component/{{Name}}.tsx

@@ -1,18 +1,16 @@
-import * as React from 'react'
-import * as css from './{{Name}}.css'
+import * as React from "react"
+import * as css from "./{{Name}}.css"
 
 class {{Name}} extends React.Component<any> {
-  private {{property}}
+  private {{ property }}
 
   constructor(props: any) {
     super(props)
-    this.{{property}} = {{value}}
+    this.{{ property }} = {{ value }}
   }
 
   public render() {
-    return (
-      <div className={ css.{{Name}} } />
-    )
+    return <div className={ css.{{Name}} } />
   }
 }
 

index.d.ts

@@ -1,22 +0,0 @@
-declare namespace IScaffold {
-
-  export interface IConfig {
-    name?: string
-    templates: string[]
-    output: string | ((path: string, base: string) => string)
-    locals?: any
-  }
-
-  export interface IReplacement {
-    find: string | RegExp
-    replace(): string
-    [other: string]: any
-  }
-
-  export interface IFileRepr {
-    base: string
-    file: string
-  }
-}
-
-export default IScaffold

jest.config.ts

@@ -0,0 +1,196 @@
+/*
+ * 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 and instances between 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/"
+  // ],
+
+  // 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,
+
+  // 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",
+  //   "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: {},
+
+  // 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 between 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 between 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: "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",
+
+  // This option sets the URL for the jsdom environment. It is reflected in properties such as location.href
+  // testURL: "http://localhost",
+
+  // Setting this value to "fake" allows the use of fake timers for functions such as "setTimeout"
+  // timers: "real",
+
+  // A map from regular expressions to paths to transformers
+  // transform: {},
+
+  // An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
+  // transformIgnorePatterns: [
+  //   "/node_modules/",
+  //   "\\.pnp\\.[^\\/]+$"
+  // ],
+
+  // 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: undefined,
+
+  // 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,
+
+  // extensionsToTreatAsEsm: [".ts"],
+}

package.json

@@ -1,32 +1,53 @@
 {
   "name": "simple-scaffold",
-  "version": "0.2.0",
-  "description": "Create files based on templates",
+  "version": "1.1.0",
+  "description": "A simple command to generate any file structure, from single components to entire app boilerplates.",
   "repository": "https://github.com/chenasraf/simple-scaffold.git",
   "author": "Chen Asraf <inbox@casraf.com>",
   "license": "MIT",
-  "main": "dist/scaffold.js",
-  "bin": "dist/cmd.js",
-  "types": "index.d.ts",
+  "main": "index.js",
+  "bin": "cmd.js",
+  "keywords": [
+    "javascript",
+    "cli",
+    "template",
+    "files",
+    "typescript",
+    "generator",
+    "scaffold",
+    "file",
+    "scaffolding"
+  ],
   "scripts": {
-    "build": "NODE_ENV=${NODE_ENV:-production} webpack -p && chmod -R +x ./dist",
-    "dev": "webpack --watch",
+    "clean": "rimraf dist/",
+    "build": "yarn clean && tsc && chmod -R +x ./dist && cp ./package.json ./README.md ./dist/",
+    "dev": "tsc --watch",
     "start": "node dist/scaffold.js",
-    "test": "node dist/test.js",
-    "cmd": "dist/cmd.js",
+    "test": "jest --verbose",
+    "cmd": "node --trace-warnings dist/cmd.js",
     "build-test": "yarn build && yarn test",
     "build-cmd": "yarn build && yarn cmd"
   },
   "dependencies": {
-    "@types/glob": "^5.0.34",
-    "@types/handlebars": "^4.0.36",
-    "@types/node": "^8.0.50",
-    "glob": "^7.1.2",
-    "handlebars": "^4.0.11",
-    "ts-loader": "^3.1.1",
-    "typescript": "^2.6.1",
-    "webpack": "^3.8.1",
-    "webpack-dev-server": "^2.9.4",
-    "webpack-node-externals": "^1.6.0"
+    "chalk": "^4.1.2",
+    "date-fns": "^2.28.0",
+    "glob": "^7.1.3",
+    "handlebars": "^4.7.7",
+    "lodash": "^4.17.21",
+    "massarg": "^1.0.5",
+    "util.promisify": "^1.1.1"
+  },
+  "devDependencies": {
+    "@types/glob": "^7.1.1",
+    "@types/jest": "^26.0.24",
+    "@types/lodash": "^4.14.171",
+    "@types/mock-fs": "^4.13.1",
+    "@types/node": "^14.14.22",
+    "jest": "^27.0.6",
+    "mock-fs": "^5.0.0",
+    "rimraf": "^3.0.2",
+    "ts-jest": "^27.0.3",
+    "ts-node": "^10.1.0",
+    "typescript": "^4.3.5"
   }
-}
+}

scaffold.ts

@@ -1,103 +0,0 @@
-import * as fs from 'fs'
-import * as path from 'path'
-import IScaffold from './index'
-import * as glob from 'glob'
-import * as handlebars from 'handlebars'
-
-class SimpleScaffold {
-  private config: IScaffold.IConfig
-  private locals = {} as any
-
-  constructor(config: IScaffold.IConfig) {
-    const DefaultConfig: IScaffold.IConfig = {
-      name: 'scaffold',
-      templates: [],
-      output: process.cwd(),
-    }
-
-    this.config = (Object as any).assign({}, DefaultConfig, config)
-
-    const DefaultLocals = {
-      Name: this.config.name![0].toUpperCase() + this.config.name!.slice(1),
-      name: this.config.name![0].toLowerCase() + this.config.name!.slice(1)
-    }
-
-    this.locals = (Object as any).assign({}, DefaultLocals, config.locals)
-  }
-
-  private parseLocals(text: string): string {
-    const template = handlebars.compile(text, {
-      noEscape: true
-    })
-    return template(this.locals)
-  }
-
-  private *fileList(input: string[]): IterableIterator<IScaffold.IFileRepr> {
-    for (const checkPath of input) {
-      const files = glob.sync(checkPath).map(g => g[0] == '/' ? g : path.join(process.cwd(), g))
-      const idx = checkPath.indexOf('*')
-      let cleanCheckPath = checkPath
-      if (idx >= 0) {
-        cleanCheckPath = checkPath.slice(0, idx - 1)
-      }
-      for (const file of files) {
-        yield {base: cleanCheckPath, file}
-      }
-    }
-  }
-
-  private getFileContents(filePath: string): string {
-    return fs.readFileSync(filePath).toString()
-  }
-
-  private getOutputPath(file: string, basePath: string): string {
-    let out
-
-    if (typeof this.config.output === 'function') {
-      out = this.config.output(file, basePath)
-    } else {
-      const outputDir = this.config.output + `/${this.config.name}/`
-      const idx = file.indexOf(basePath)
-      let relativeFilePath = file
-      if (idx >= 0) {
-        relativeFilePath = file.slice(idx + basePath.length + 1)
-      }
-      out = outputDir + relativeFilePath
-    }
-
-    return this.parseLocals(out)
-  }
-
-  private writeFile(filePath: string, fileContents: string): void {
-    if (!fs.existsSync(path.dirname(filePath))) {
-      fs.mkdirSync(path.dirname(filePath))
-    }
-    console.info('Writing file:', filePath)
-    fs.writeFileSync(filePath, fileContents, { encoding: 'utf-8' })
-  }
-
-  public run(): void {
-    console.log(`Generating scaffold: ${this.config.name}...`)
-    const templates = this.fileList(this.config.templates)
-
-    let fileConf, count = 0
-    while (fileConf = templates.next().value) {
-      count++
-      const {file, base} = fileConf
-      const outputPath = this.getOutputPath(file, base)
-      const contents = this.getFileContents(file)
-      const outputContents = this.parseLocals(contents)
-
-      this.writeFile(outputPath, outputContents)
-      console.info('Parsing:', {file, base, outputPath, outputContents: outputContents.replace("\n", "\\n")})
-    }
-
-    if (!count) {
-      throw new Error('No files to scaffold!')
-    }
-
-    console.log('Done')
-  }
-}
-
-export default SimpleScaffold

src/cmd.ts

@@ -0,0 +1,102 @@
+#!/usr/bin/env node
+import massarg from "massarg"
+import chalk from "chalk"
+import { LogLevel, ScaffoldCmdConfig } from "./types"
+import { Scaffold } from "./scaffold"
+
+export function parseCliArgs(args = process.argv.slice(2)) {
+  return (
+    massarg<ScaffoldCmdConfig & { help: boolean; extras: string[] }>()
+      .main(Scaffold)
+      .option({
+        name: "name",
+        aliases: ["n"],
+        description:
+          "Name to be passed to the generated files. {{name}} and {{Name}} inside contents and file names will be replaced accordingly.",
+        isDefault: true,
+        required: true,
+      })
+      .option({
+        name: "output",
+        aliases: ["o"],
+        description: `Path to output to. If --create-sub-folder is enabled, the subfolder will be created inside this path. ${chalk.reset`${chalk.white`(default: current dir)`}`}`,
+        required: true,
+      })
+      .option({
+        name: "templates",
+        aliases: ["t"],
+        array: true,
+        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: true,
+      })
+      .option({
+        name: "overwrite",
+        aliases: ["w"],
+        boolean: true,
+        defaultValue: false,
+        description: "Enable to override output files, even if they already exist.",
+      })
+      .option({
+        name: "data",
+        aliases: ["d"],
+        description: "Add custom data to the templates. By default, only your app name is included.",
+        parse: (v) => JSON.parse(v),
+      })
+      .option({
+        name: "create-sub-folder",
+        aliases: ["s"],
+        boolean: true,
+        defaultValue: false,
+        description: "Create subfolder with the input name",
+      })
+      .option({
+        name: "sub-folder-name-helper",
+        aliases: ["sh"],
+        description: "Default helper to apply to subfolder name when using `--create-sub-folder true`.",
+      })
+      .option({
+        name: "quiet",
+        aliases: ["q"],
+        boolean: true,
+        defaultValue: false,
+        description: "Suppress output logs (Same as --verbose 0)",
+      })
+      .option({
+        name: "verbose",
+        aliases: ["v"],
+        defaultValue: LogLevel.Info,
+        description: `Determine amount of logs to display. The values are: ${chalk.bold`0 (none) | 1 (debug) | 2 (info) | 3 (warn) | 4 (error)`}. The provided level will display messages of the same level or higher.`,
+        parse: Number,
+      })
+      .option({
+        name: "dry-run",
+        aliases: ["dr"],
+        boolean: true,
+        defaultValue: false,
+        description:
+          "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.",
+      })
+      // .example({
+      //   input: `yarn cmd -t examples/test-input/Component -o examples/test-output -d '{"property":"myProp","value":"10"}'`,
+      //   description: "Usage",
+      //   output: "",
+      // })
+      .help({
+        binName: "simple-scaffold",
+        useGlobalColumns: true,
+        usageExample: "[options]",
+        header: "Create structured files based on templates.",
+        footer: [
+          `Copyright © Chen Asraf 2021`,
+          `NPM: ${chalk.underline`https://npmjs.com/package/simple-scaffold`}`,
+          `GitHub: ${chalk.underline`https://github.com/chenasraf/simple-scaffold`}`,
+        ].join("\n"),
+      })
+      .parse(args)
+  )
+}
+
+parseCliArgs()

src/index.ts

@@ -0,0 +1,4 @@
+export * from "./scaffold"
+export * from "./types"
+import Scaffold from "./scaffold"
+export default Scaffold

src/scaffold.ts

@@ -0,0 +1,134 @@
+import path from "path"
+
+import {
+  createDirIfNotExists,
+  getOptionValueForFile,
+  handleErr,
+  log,
+  pascalCase,
+  isDir,
+  removeGlob,
+  makeRelativePath,
+  registerHelpers,
+  getTemplateGlobInfo,
+  getFileList,
+  getBasePath,
+  copyFileTransformed,
+  getTemplateFileInfo,
+  logInitStep,
+  logInputFile,
+} from "./utils"
+import { LogLevel, ScaffoldConfig } from "./types"
+
+/**
+ * Create a scaffold using given `options`.
+ *
+ * #### Create files
+ * To create a file structure to output, use any directory and file structure you would like.
+ * Inside folder names, file names or file contents, you may place `{{ var }}` where `var` is either
+ * `name` which is the scaffold name you provided or one of the keys you provided in the `data` option.
+ *
+ * The contents and names will be replaced with the transformed values so you can use your original structure as a
+ * boilerplate for other projects, components, modules, or even single files.
+ *
+ * #### Helpers
+ * Helpers are functions you can use to transform your `{{ var }}` contents into other values without having to
+ * pre-define the data and use a duplicated key. Common cases are transforming name-case format
+ * (e.g. `MyName` → `my_name`), so these have been provided as defaults:
+ *
+ * | Helper name | Example code            | Example output |
+ * | ----------- | ----------------------- | -------------- |
+ * | camelCase   | `{{ camelCase name }}`  | myName         |
+ * | snakeCase   | `{{ snakeCase name }}`  | my_name        |
+ * | startCase   | `{{ startCase name }}`  | My Name        |
+ * | kebabCase   | `{{ kebabCase name }}`  | my-name        |
+ * | hyphenCase  | `{{ hyphenCase name }}` | my-name        |
+ * | pascalCase  | `{{ pascalCase name }}` | MyName         |
+ * | upperCase   | `{{ upperCase name }}`  | MYNAME         |
+ * | lowerCase   | `{{ lowerCase name }}`  | myname         |
+ *
+ * Any functions you provide in `helpers` option will also be available to you to make custom formatting as you see fit
+ * (for example, formatting a date)
+ */
+export async function Scaffold({ ...options }: ScaffoldConfig): Promise<void> {
+  options.output ??= process.cwd()
+
+  registerHelpers(options)
+  try {
+    options.data = { name: options.name, Name: pascalCase(options.name), ...options.data }
+    logInitStep(options)
+    for (let _template of options.templates) {
+      try {
+        const { nonGlobTemplate, origTemplate, isDirOrGlob, isGlob, template } = await getTemplateGlobInfo(
+          options,
+          _template
+        )
+        const files = await getFileList(options, template)
+        for (const inputFilePath of files) {
+          if (await isDir(inputFilePath)) {
+            continue
+          }
+          const relPath = makeRelativePath(path.dirname(removeGlob(inputFilePath).replace(nonGlobTemplate, "")))
+          const basePath = getBasePath(relPath)
+          logInputFile(options, {
+            origTemplate,
+            relPath,
+            template,
+            inputFilePath,
+            nonGlobTemplate,
+            basePath,
+            isDirOrGlob,
+            isGlob,
+          })
+          await handleTemplateFile(options, options.data, {
+            templatePath: inputFilePath,
+            basePath,
+          })
+        }
+      } catch (e: any) {
+        handleErr(e)
+      }
+    }
+  } catch (e: any) {
+    log(options, LogLevel.Error, e)
+    throw e
+  }
+}
+async function handleTemplateFile(
+  options: ScaffoldConfig,
+  data: Record<string, string>,
+  { templatePath, basePath }: { templatePath: string; basePath: string }
+): Promise<void> {
+  return new Promise(async (resolve, reject) => {
+    try {
+      const { inputPath, outputPathOpt, outputDir, outputPath, exists } = await getTemplateFileInfo(options, data, {
+        templatePath,
+        basePath,
+      })
+      const overwrite = getOptionValueForFile(options, inputPath, options.overwrite ?? false)
+
+      log(
+        options,
+        LogLevel.Debug,
+        `\nParsing ${templatePath}`,
+        `\nBase path: ${basePath}`,
+        `\nFull input path: ${inputPath}`,
+        `\nOutput Path Opt: ${outputPathOpt}`,
+        `\nFull output dir: ${outputDir}`,
+        `\nFull output path: ${outputPath}`,
+        `\n`
+      )
+
+      await createDirIfNotExists(path.dirname(outputPath), options)
+
+      log(options, LogLevel.Info, `Writing to ${outputPath}`)
+      await copyFileTransformed(options, { exists, overwrite, outputPath, inputPath })
+      resolve()
+    } catch (e: any) {
+      handleErr(e)
+      reject(e)
+    }
+  })
+}
+
+export default Scaffold

src/types.ts

@@ -0,0 +1,141 @@
+import { HelperDelegate } from "handlebars/runtime"
+
+export enum LogLevel {
+  None = 0,
+  Debug = 1,
+  Info = 2,
+  Warning = 3,
+  Error = 4,
+}
+
+export type FileResponseFn<T> = (fullPath: string, basedir: string, basename: string) => T
+
+export type FileResponse<T> = T | FileResponseFn<T>
+
+export type DefaultHelperKeys =
+  | "camelCase"
+  | "date"
+  | "hyphenCase"
+  | "kebabCase"
+  | "lowerCase"
+  | "now"
+  | "pascalCase"
+  | "snakeCase"
+  | "startCase"
+  | "upperCase"
+
+export type HelperKeys<T> = DefaultHelperKeys | T
+
+export type Helper = HelperDelegate
+
+export interface ScaffoldConfig {
+  /**
+   * Name to be passed to the generated files. `{{name}}` and `{{Name}}` inside contents and file names will be replaced
+   * accordingly.
+   */
+  name: string
+
+  /**
+   * 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. (default: current working directory)
+   */
+  templates: string[]
+
+  /** Path to output to. If `createSubFolder` is `true`, the subfolder will be created inside this path. */
+  output: FileResponse<string>
+
+  /**
+   * Create subfolder with the input name (default: `false`)
+   */
+  createSubFolder?: boolean
+
+  /**
+   * Add custom data to the templates. By default, only your app name is included as `{{name}}` and `{{Name}}`.
+   */
+  data?: Record<string, string>
+
+  /**
+   * Enable to override output files, even if they already exist. (default: `false`)
+   *
+   * You may supply a function to this option, which can take the arguments `(fullPath, baseDir, baseName)` and returns
+   * a string, to return a dynamic path for each file.
+   */
+  overwrite?: FileResponse<boolean>
+
+  /** Suppress output logs (Same as `verbose: 0` or `verbose: LogLevel.None`) */
+  quiet?: boolean
+
+  /**
+   * Determine amount of logs to display.
+   *
+   * The values are: `0 (none) | 1 (debug) | 2 (info) | 3 (warn) | 4 (error)`. The provided level will display messages
+   * of the same level or higher. (default: `2 (info)`)
+   * @see LogLevel
+   */
+  verbose?: LogLevel
+
+  /**
+   * 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`)
+   */
+  dryRun?: boolean
+
+  /**
+   * Additional helpers to add to the template parser. Provide an object whose keys are the name of the function to add,
+   * and the value is the helper function itself. The signature of helpers is as follows:
+   * ```typescript
+   * (text: string) => string
+   * ```
+   *
+   * A full example might be:
+   *
+   * ```typescript
+   * Scaffold({
+   *   //...
+   *   helpers: {
+   *     upperCamelCase: (text) => camelCase(text).toUpperCase()
+   *   }
+   * })
+   * ```
+   *
+   * See the list of all the built-in available helpers, or how to define your own in the [readme](https://github.com/chenasraf/simple-scaffold#built-in-helpers).
+   */
+  helpers?: Record<string, Helper>
+
+  /**
+   * Default transformer to apply to subfolder name when using `createSubFolder: true`. Can be one of the default
+   * helpers, or a custom one you provide to `helpers`. Defaults to `undefined`, which means no transformation is done.
+   */
+  subFolderNameHelper?: DefaultHelperKeys | string
+
+  /**
+   * This callback runs right before content is being written to the disk. If you supply this function, you may return
+   * a string that represents the final content of your file, you may process the content as you see fit. For example,
+   * you may run formatters on a file, fix output in edge-cases not supported by helpers or data, etc.
+   *
+   * If the return value of this function is `undefined`, the original content will be used.
+   *
+   * @param content The original template after token replacement
+   * @param rawContent The original template before token replacement
+   * @param outputPath The final output path of the processed file
+   *
+   * @returns `String | Buffer | undefined` The final output of the file contents-only, after further modifications -
+   * or `undefined` to use the original content (i.e. `content.toString()`)
+   */
+  beforeWrite?(
+    content: Buffer,
+    rawContent: Buffer,
+    outputPath: string
+  ): string | Buffer | undefined | Promise<string | Buffer | undefined>
+}
+export interface ScaffoldCmdConfig {
+  name: string
+  templates: string[]
+  output: string
+  createSubFolder: boolean
+  data?: Record<string, string>
+  overwrite: boolean
+  quiet: boolean
+  verbose: LogLevel
+  dryRun: boolean
+}

src/utils.ts

@@ -0,0 +1,376 @@
+import path from "path"
+import { F_OK } from "constants"
+import { DefaultHelperKeys, FileResponse, FileResponseFn, Helper, LogLevel, ScaffoldConfig } from "./types"
+import camelCase from "lodash/camelCase"
+import snakeCase from "lodash/snakeCase"
+import kebabCase from "lodash/kebabCase"
+import startCase from "lodash/startCase"
+import Handlebars from "handlebars"
+import { promises as fsPromises } from "fs"
+import chalk from "chalk"
+const { stat, access, mkdir } = fsPromises
+import dtAdd from "date-fns/add"
+import dtFormat from "date-fns/format"
+import dtParseISO from "date-fns/parseISO"
+
+const dateFns = {
+  add: dtAdd,
+  format: dtFormat,
+  parseISO: dtParseISO,
+}
+
+import { glob } from "glob"
+import { promisify } from "util"
+const { readFile, writeFile } = fsPromises
+
+export const defaultHelpers: Record<DefaultHelperKeys, Helper> = {
+  camelCase,
+  snakeCase,
+  startCase,
+  kebabCase,
+  hyphenCase: kebabCase,
+  pascalCase,
+  lowerCase: (text) => text.toLowerCase(),
+  upperCase: (text) => text.toUpperCase(),
+  now: nowHelper,
+  date: dateHelper,
+}
+
+export function _dateHelper(date: Date, formatString: string): string
+export function _dateHelper(
+  date: Date,
+  formatString: string,
+  durationDifference: number,
+  durationType: keyof Duration
+): string
+export function _dateHelper(
+  date: Date,
+  formatString: string,
+  durationDifference?: number,
+  durationType?: keyof Duration
+): string {
+  if (durationType && durationDifference !== undefined) {
+    return dateFns.format(dateFns.add(date, { [durationType]: durationDifference }), formatString)
+  }
+  return dateFns.format(date, formatString)
+}
+
+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 {
+  return _dateHelper(new Date(), formatString, durationDifference!, durationType!)
+}
+
+export function dateHelper(date: string, formatString: string): string
+export function dateHelper(
+  date: string,
+  formatString: string,
+  durationDifference: number,
+  durationType: keyof Duration
+): string
+
+export function dateHelper(
+  date: string,
+  formatString: string,
+  durationDifference?: number,
+  durationType?: keyof Duration
+): string {
+  return _dateHelper(dateFns.parseISO(date), formatString, durationDifference!, durationType!)
+}
+
+export function registerHelpers(options: ScaffoldConfig): void {
+  const _helpers = { ...defaultHelpers, ...options.helpers }
+  for (const helperName in _helpers) {
+    log(options, LogLevel.Debug, `Registering helper: ${helperName}`)
+    Handlebars.registerHelper(helperName, _helpers[helperName as keyof typeof _helpers])
+  }
+}
+
+export function handleErr(err: NodeJS.ErrnoException | null): void {
+  if (err) throw err
+}
+
+export function log(options: ScaffoldConfig, level: LogLevel, ...obj: any[]): void {
+  if (options.quiet || options.verbose === LogLevel.None || level < (options.verbose ?? LogLevel.Info)) {
+    return
+  }
+  const levelColor: Record<LogLevel, keyof typeof chalk> = {
+    [LogLevel.None]: "reset",
+    [LogLevel.Debug]: "blue",
+    [LogLevel.Info]: "dim",
+    [LogLevel.Warning]: "yellow",
+    [LogLevel.Error]: "red",
+  }
+  const chalkFn: any = chalk[levelColor[level]]
+  const key: "log" | "warn" | "error" = level === LogLevel.Error ? "error" : level === LogLevel.Warning ? "warn" : "log"
+  const logFn: any = console[key]
+  logFn(
+    ...obj.map((i) =>
+      i instanceof Error
+        ? chalkFn(i, JSON.stringify(i, undefined, 1), i.stack)
+        : typeof i === "object"
+        ? chalkFn(JSON.stringify(i, undefined, 1))
+        : chalkFn(i)
+    )
+  )
+}
+
+export async function createDirIfNotExists(dir: string, options: ScaffoldConfig): Promise<void> {
+  const parentDir = path.dirname(dir)
+
+  if (!(await pathExists(parentDir))) {
+    await createDirIfNotExists(parentDir, options)
+  }
+
+  if (!(await pathExists(dir))) {
+    try {
+      log(options, LogLevel.Debug, `Creating dir ${dir}`)
+      await mkdir(dir)
+      return
+    } catch (e: any) {
+      if (e.code !== "EEXIST") {
+        throw e
+      }
+      return
+    }
+  }
+}
+
+export function getOptionValueForFile<T>(
+  options: ScaffoldConfig,
+  filePath: string,
+  fn: FileResponse<T>,
+  defaultValue?: T
+): T {
+  if (typeof fn !== "function") {
+    return defaultValue ?? (fn as T)
+  }
+  return (fn as FileResponseFn<T>)(
+    filePath,
+    path.dirname(handlebarsParse(options, filePath, { isPath: true }).toString()),
+    path.basename(handlebarsParse(options, filePath, { isPath: true }).toString())
+  )
+}
+
+export function handlebarsParse(
+  options: ScaffoldConfig,
+  templateBuffer: Buffer | string,
+  { isPath = false }: { isPath?: boolean } = {}
+): Buffer {
+  const { data } = options
+  try {
+    let str = templateBuffer.toString()
+    if (isPath) {
+      str = str.replace(/\\/g, "/")
+    }
+    const parser = Handlebars.compile(str, { noEscape: true })
+    let outputContents = parser(data)
+    if (isPath && path.sep !== "/") {
+      outputContents = outputContents.replace(/\//g, "\\")
+    }
+    return Buffer.from(outputContents)
+  } catch (e) {
+    log(options, LogLevel.Debug, e)
+    log(options, LogLevel.Warning, "Couldn't parse file with handlebars, returning original content")
+    return Buffer.from(templateBuffer)
+  }
+}
+
+export async function pathExists(filePath: string): Promise<boolean> {
+  try {
+    await access(filePath, F_OK)
+    return true
+  } catch (e: any) {
+    if (e.code === "ENOENT") {
+      return false
+    }
+    throw e
+  }
+}
+
+export function pascalCase(s: string): string {
+  return startCase(s).replace(/\s+/g, "")
+}
+
+export async function isDir(path: string): Promise<boolean> {
+  const tplStat = await stat(path)
+  return tplStat.isDirectory()
+}
+
+export function removeGlob(template: string): string {
+  return template.replace(/\*/g, "").replace(/(\/\/|\\\\)/g, path.sep)
+}
+
+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(), "")
+}
+
+export async function getFileList(options: ScaffoldConfig, template: string): Promise<string[]> {
+  return (
+    await promisify(glob)(template, {
+      dot: true,
+      debug: options.verbose === LogLevel.Debug,
+      nodir: true,
+    })
+  ).map((f) => f.replace(/\//g, path.sep))
+}
+
+export interface GlobInfo {
+  nonGlobTemplate: string
+  origTemplate: string
+  isDirOrGlob: boolean
+  isGlob: boolean
+  template: string
+}
+
+export async function getTemplateGlobInfo(options: ScaffoldConfig, template: string): Promise<GlobInfo> {
+  const isGlob = glob.hasMagic(template)
+  log(options, LogLevel.Debug, "before isDir", "isGlob:", isGlob, template)
+  let _template = template
+  const nonGlobTemplate = isGlob ? removeGlob(template) : template
+  const isDirOrGlob = isGlob ? true : await isDir(template)
+  log(options, LogLevel.Debug, "after isDir", isDirOrGlob)
+  const _shouldAddGlob = !isGlob && isDirOrGlob
+  const origTemplate = template
+  if (_shouldAddGlob) {
+    _template = path.join(template, "**", "*")
+  }
+  return { nonGlobTemplate, origTemplate, isDirOrGlob, isGlob, template: _template }
+}
+
+export interface OutputFileInfo {
+  inputPath: string
+  outputPathOpt: string
+  outputDir: string
+  outputPath: string
+  exists: boolean
+}
+
+export async function getTemplateFileInfo(
+  options: ScaffoldConfig,
+  data: Record<string, string>,
+  { templatePath, basePath }: { templatePath: string; basePath: string }
+): Promise<OutputFileInfo> {
+  const inputPath = path.resolve(process.cwd(), templatePath)
+  const outputPathOpt = getOptionValueForFile(options, inputPath, options.output)
+  const outputDir = getOutputDir(options, outputPathOpt, basePath)
+  const outputPath = handlebarsParse(options, path.join(outputDir, path.basename(inputPath)), {
+    isPath: true,
+  }).toString()
+  const exists = await pathExists(outputPath)
+  return { inputPath, outputPathOpt, outputDir, outputPath, exists }
+}
+
+export async function copyFileTransformed(
+  options: ScaffoldConfig,
+  {
+    exists,
+    overwrite,
+    outputPath,
+    inputPath,
+  }: {
+    exists: boolean
+    overwrite: boolean
+    outputPath: string
+    inputPath: string
+  }
+): Promise<void> {
+  if (!exists || overwrite) {
+    if (exists && overwrite) {
+      log(options, LogLevel.Info, `File ${outputPath} exists, overwriting`)
+    }
+    const templateBuffer = await readFile(inputPath)
+    const unprocessedOutputContents = handlebarsParse(options, templateBuffer)
+    const finalOutputContents = (
+      (await options.beforeWrite?.(unprocessedOutputContents, templateBuffer, outputPath)) ?? unprocessedOutputContents
+    ).toString()
+
+    if (!options.dryRun) {
+      await writeFile(outputPath, finalOutputContents)
+      log(options, LogLevel.Info, "Done.")
+    } else {
+      log(options, LogLevel.Info, "Content output:")
+      log(options, LogLevel.Info, finalOutputContents)
+    }
+  } else if (exists) {
+    log(options, LogLevel.Info, `File ${outputPath} already exists, skipping`)
+  }
+}
+
+export function getOutputDir(options: ScaffoldConfig, outputPathOpt: string, basePath: string): string {
+  return path.resolve(
+    process.cwd(),
+    ...([
+      outputPathOpt,
+      basePath,
+      options.createSubFolder
+        ? options.subFolderNameHelper
+          ? handlebarsParse(options, `{{ ${options.subFolderNameHelper} name }}`).toString()
+          : options.name
+        : undefined,
+    ].filter(Boolean) as string[])
+  )
+}
+
+export function logInputFile(
+  options: ScaffoldConfig,
+  {
+    origTemplate,
+    relPath,
+    template,
+    inputFilePath,
+    nonGlobTemplate,
+    basePath,
+    isDirOrGlob,
+    isGlob,
+  }: {
+    origTemplate: string
+    relPath: string
+    template: string
+    inputFilePath: string
+    nonGlobTemplate: string
+    basePath: string
+    isDirOrGlob: boolean
+    isGlob: boolean
+  }
+): void {
+  log(
+    options,
+    LogLevel.Debug,
+    `\nprocess.cwd(): ${process.cwd()}`,
+    `\norigTemplate: ${origTemplate}`,
+    `\nrelPath: ${relPath}`,
+    `\ntemplate: ${template}`,
+    `\ninputFilePath: ${inputFilePath}`,
+    `\nnonGlobTemplate: ${nonGlobTemplate}`,
+    `\nbasePath: ${basePath}`,
+    `\nisDirOrGlob: ${isDirOrGlob}`,
+    `\nisGlob: ${isGlob}`,
+    `\n`
+  )
+}
+
+export function logInitStep(options: ScaffoldConfig): void {
+  log(options, LogLevel.Debug, "Full config:", {
+    name: options.name,
+    templates: options.templates,
+    output: options.output,
+    createSubfolder: options.createSubFolder,
+    data: options.data,
+    overwrite: options.overwrite,
+    quiet: options.quiet,
+    subFolderTransformHelper: options.subFolderNameHelper,
+    helpers: Object.keys(options.helpers ?? {}),
+    verbose: `${options.verbose} (${Object.keys(LogLevel).find(
+      (k) => (LogLevel[k as any] as unknown as number) === options.verbose!
+    )})`,
+  })
+  log(options, LogLevel.Info, "Data:", options.data)
+}

test.ts

@@ -1,13 +0,0 @@
-import SimpleScaffold from './scaffold'
-import * as path from 'path'
-
-const templateDir = path.join(process.cwd(), 'examples')
-
-new SimpleScaffold({
-  templates: [templateDir + '/test-input/Component/**/*'],
-  output: templateDir + '/test-output',
-  locals: {
-    property: 'myProp',
-    value: '"value"'
-  }
-}).run()

tests/scaffold.test.ts

@@ -0,0 +1,476 @@
+import mockFs from "mock-fs"
+import FileSystem from "mock-fs/lib/filesystem"
+import Scaffold from "../src/scaffold"
+import { readdirSync, readFileSync } from "fs"
+import { Console } from "console"
+import { defaultHelpers } from "../src/utils"
+import { join } from "path"
+import * as dateFns from "date-fns"
+
+const fileStructNormal = {
+  input: {
+    "{{name}}.txt": "Hello, my app is {{name}}",
+  },
+  output: {},
+}
+
+const fileStructWithData = {
+  input: {
+    "{{name}}.txt": "Hello, my value is {{value}}",
+  },
+  output: {},
+}
+
+const fileStructNested = {
+  input: {
+    "{{name}}-1.txt": "This should be in root",
+    "{{Name}}": {
+      "{{name}}-2.txt": "Hello, my value is {{value}}",
+      moreNesting: {
+        "{{name}}-3.txt": "Hi! My value is actually NOT {{value}}!",
+      },
+    },
+  },
+  output: {},
+}
+const fileStructSubdirTransformer = {
+  input: {
+    "{{name}}.txt": "Hello, my app is {{name}}",
+  },
+  output: {},
+}
+
+const defaultHelperNames = Object.keys(defaultHelpers)
+const fileStructHelpers = {
+  input: {
+    defaults: defaultHelperNames.reduce<Record<string, string>>(
+      (all, cur) => ({ ...all, [cur + ".txt"]: `{{ ${cur} name }}` }),
+      {}
+    ),
+    custom: {
+      "add1.txt": "{{ add1 name }}",
+    },
+  },
+  output: {},
+}
+
+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' }}",
+  },
+  output: {},
+}
+
+function withMock(fileStruct: FileSystem.DirectoryItems, testFn: jest.EmptyFunction): jest.EmptyFunction {
+  return () => {
+    beforeEach(() => {
+      // console.log("Mocking:", fileStruct)
+      console = new Console(process.stdout, process.stderr)
+
+      mockFs(fileStruct)
+      // logMock = jest.spyOn(console, 'log').mockImplementation((...args) => {
+      //   logsTemp.push(args)
+      // })
+    })
+    testFn()
+    afterEach(() => {
+      // console.log("Restoring mock")
+      mockFs.restore()
+    })
+  }
+}
+
+describe("Scaffold", () => {
+  describe(
+    "create subfolder",
+    withMock(fileStructNormal, () => {
+      test("should not create by default", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          verbose: 0,
+        })
+        const data = readFileSync(join(process.cwd(), "output", "app_name.txt"))
+        expect(data.toString()).toEqual("Hello, my app is app_name")
+      })
+
+      test("should create with config", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          createSubFolder: true,
+          verbose: 0,
+        })
+
+        const data = readFileSync(join(process.cwd(), "output", "app_name", "app_name.txt"))
+        expect(data.toString()).toEqual("Hello, my app is app_name")
+      })
+    })
+  )
+
+  describe(
+    "overwrite",
+    withMock(fileStructWithData, () => {
+      test("should not overwrite by default", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          data: { value: "1" },
+          verbose: 0,
+        })
+
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          data: { value: "2" },
+          verbose: 0,
+        })
+
+        const data = readFileSync(join(process.cwd(), "output", "app_name.txt"))
+        expect(data.toString()).toEqual("Hello, my value is 1")
+      })
+
+      test("should overwrite with config", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          data: { value: "1" },
+          verbose: 0,
+        })
+
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          data: { value: "2" },
+          overwrite: true,
+          verbose: 0,
+        })
+
+        const data = readFileSync(join(process.cwd(), "output", "app_name.txt"))
+        expect(data.toString()).toEqual("Hello, my value is 2")
+      })
+    })
+  )
+
+  describe(
+    "errors",
+    withMock(fileStructNormal, () => {
+      let consoleMock1: jest.SpyInstance
+      beforeAll(() => {
+        consoleMock1 = jest.spyOn(console, "error").mockImplementation(() => void 0)
+      })
+
+      afterAll(() => {
+        consoleMock1.mockRestore()
+      })
+
+      test("should throw for bad input", async () => {
+        await expect(
+          Scaffold({
+            name: "app_name",
+            output: "output",
+            templates: ["non-existing-input"],
+            data: { value: "1" },
+            verbose: 0,
+          })
+        ).rejects.toThrow()
+
+        await expect(
+          Scaffold({
+            name: "app_name",
+            output: "output",
+            templates: ["non-existing-input/non-existing-file.txt"],
+            data: { value: "1" },
+            verbose: 0,
+          })
+        ).rejects.toThrow()
+
+        expect(() => readFileSync(join(process.cwd(), "output", "app_name.txt"))).toThrow()
+      })
+    })
+  )
+
+  describe(
+    "dry run",
+    withMock(fileStructNormal, () => {
+      let consoleMock1: jest.SpyInstance
+      beforeAll(() => {
+        consoleMock1 = jest.spyOn(console, "error").mockImplementation(() => void 0)
+      })
+
+      afterAll(() => {
+        consoleMock1.mockRestore()
+      })
+
+      test("should not write to disk", async () => {
+        Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          data: { value: "1" },
+          verbose: 0,
+          dryRun: true,
+        })
+
+        expect(() => readFileSync(join(process.cwd(), "output", "app_name.txt"))).toThrow()
+      })
+    })
+  )
+
+  describe(
+    "outputPath override",
+    withMock(fileStructNormal, () => {
+      test("should allow override function", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: (fullPath, basedir, basename) => join("custom-output", `${basename.split(".")[0]}`),
+          templates: ["input"],
+          data: { value: "1" },
+          verbose: 0,
+        })
+        const data = readFileSync(join(process.cwd(), "/custom-output/app_name/app_name.txt"))
+        expect(data.toString()).toEqual("Hello, my app is app_name")
+      })
+    })
+  )
+
+  describe(
+    "output structure",
+    withMock(fileStructNested, () => {
+      test("should maintain input structure on output", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          data: { value: "1" },
+          verbose: 0,
+        })
+
+        const rootDir = readdirSync(join(process.cwd(), "output"))
+        const dir = readdirSync(join(process.cwd(), "output", "AppName"))
+        const nestedDir = readdirSync(join(process.cwd(), "output", "AppName", "moreNesting"))
+        expect(rootDir).toHaveProperty("length")
+        expect(dir).toHaveProperty("length")
+        expect(nestedDir).toHaveProperty("length")
+
+        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"))
+        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(
+    "capitalization helpers",
+    withMock(fileStructHelpers, () => {
+      const _helpers: Record<string, (text: string) => string> = {
+        add1: (text) => text + " 1",
+      }
+
+      test("should work", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          verbose: 0,
+          helpers: _helpers,
+        })
+
+        const results = {
+          camelCase: "appName",
+          snakeCase: "app_name",
+          startCase: "App Name",
+          kebabCase: "app-name",
+          hyphenCase: "app-name",
+          pascalCase: "AppName",
+          lowerCase: "app_name",
+          upperCase: "APP_NAME",
+        }
+        for (const key in results) {
+          const file = readFileSync(join(process.cwd(), "output", "defaults", `${key}.txt`))
+          expect(file.toString()).toEqual(results[key as keyof typeof results])
+        }
+      })
+    })
+  )
+  describe(
+    "date helpers",
+    withMock(fileStructDates, () => {
+      test("should work", async () => {
+        const now = new Date()
+        const yesterday = dateFns.add(new Date(), { days: -1 })
+        const customDate = dateFns.formatISO(dateFns.add(new Date(), { days: -1 }))
+
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          verbose: 0,
+          data: { customDate },
+        })
+
+        const nowFile = readFileSync(join(process.cwd(), "output", "now.txt"))
+        const offsetFile = readFileSync(join(process.cwd(), "output", "offset.txt"))
+        const customFile = readFileSync(join(process.cwd(), "output", "custom.txt"))
+
+        // "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' }}",
+
+        expect(nowFile.toString()).toEqual(
+          `Today is ${dateFns.format(now, "mmm")}, time is ${dateFns.format(now, "HH:mm")}`
+        )
+        expect(offsetFile.toString()).toEqual(
+          `Yesterday was ${dateFns.format(yesterday, "mmm")}, time is ${dateFns.format(yesterday, "HH:mm")}`
+        )
+        expect(customFile.toString()).toEqual(
+          `Custom date is ${dateFns.format(dateFns.parseISO(customDate), "mmm")}, time is ${dateFns.format(
+            dateFns.parseISO(customDate),
+            "HH:mm"
+          )}`
+        )
+      })
+    })
+  )
+  describe(
+    "custom helpers",
+    withMock(fileStructHelpers, () => {
+      const _helpers: Record<string, (text: string) => string> = {
+        add1: (text) => text + " 1",
+      }
+      test("should work", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          verbose: 0,
+          helpers: _helpers,
+        })
+
+        const results = {
+          add1: "app_name 1",
+        }
+        for (const key in results) {
+          const file = readFileSync(join(process.cwd(), "output", "custom", `${key}.txt`))
+          expect(file.toString()).toEqual(results[key as keyof typeof results])
+        }
+      })
+    })
+  )
+  describe(
+    "transform subfolder",
+    withMock(fileStructSubdirTransformer, () => {
+      test("should work with no helper", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          createSubFolder: true,
+          verbose: 0,
+        })
+
+        const data = readFileSync(join(process.cwd(), "output", "app_name", "app_name.txt"))
+        expect(data.toString()).toEqual("Hello, my app is app_name")
+      })
+
+      test("should work with default helper", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          createSubFolder: true,
+          verbose: 0,
+          subFolderNameHelper: "upperCase",
+        })
+
+        const data = readFileSync(join(process.cwd(), "output", "APP_NAME", "app_name.txt"))
+        expect(data.toString()).toEqual("Hello, my app is app_name")
+      })
+
+      test("should work with custom helper", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          createSubFolder: true,
+          verbose: 0,
+          subFolderNameHelper: "test",
+          helpers: {
+            test: () => "REPLACED",
+          },
+        })
+
+        const data = readFileSync(join(process.cwd(), "output", "REPLACED", "app_name.txt"))
+        expect(data.toString()).toEqual("Hello, my app is app_name")
+      })
+    })
+  )
+  describe(
+    "before write",
+    withMock(fileStructNormal, () => {
+      test("should work with no callback", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          verbose: 0,
+          data: {
+            value: "value",
+          },
+        })
+
+        const data = readFileSync(join(process.cwd(), "output", "app_name.txt"))
+        expect(data.toString()).toEqual("Hello, my app is app_name")
+      })
+
+      test("should work with custom callback", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          verbose: 0,
+          data: {
+            value: "value",
+          },
+          beforeWrite: (content, beforeContent, outputPath) =>
+            [content.toString().toUpperCase(), beforeContent, outputPath].join(", "),
+        })
+
+        const data = readFileSync(join(process.cwd(), "output", "app_name.txt"))
+        expect(data.toString()).toEqual(
+          [
+            "Hello, my app is app_name".toUpperCase(),
+            fileStructNormal.input["{{name}}.txt"],
+            join(process.cwd(), "output", "app_name.txt"),
+          ].join(", ")
+        )
+      })
+      test("should work with undefined response custom callback", async () => {
+        await Scaffold({
+          name: "app_name",
+          output: "output",
+          templates: ["input"],
+          verbose: 0,
+          data: {
+            value: "value",
+          },
+          beforeWrite: () => undefined,
+        })
+
+        const data = readFileSync(join(process.cwd(), "output", "app_name.txt"))
+        expect(data.toString()).toEqual("Hello, my app is app_name")
+      })
+    })
+  )
+})

tests/utils.test.ts

@@ -0,0 +1,91 @@
+import { dateHelper, handlebarsParse, nowHelper } from "../src/utils"
+import { ScaffoldConfig } from "../src/types"
+import path from "path"
+import * as dateFns from "date-fns"
+
+const blankConf: ScaffoldConfig = {
+  verbose: 0,
+  name: "",
+  output: "",
+  templates: [],
+  data: { name: "test" },
+}
+
+describe("Utils", () => {
+  describe("handlebarsParse", () => {
+    let origSep: any
+    describe("windows paths", () => {
+      beforeAll(() => {
+        origSep = path.sep
+        Object.defineProperty(path, "sep", { value: "\\" })
+      })
+      afterAll(() => {
+        Object.defineProperty(path, "sep", { value: origSep })
+      })
+      test("should work for windows paths", async () => {
+        expect(handlebarsParse(blankConf, "C:\\exports\\{{name}}.txt", { isPath: true })).toEqual(
+          Buffer.from("C:\\exports\\test.txt")
+        )
+      })
+    })
+    describe("non-windows paths", () => {
+      beforeAll(() => {
+        origSep = path.sep
+        Object.defineProperty(path, "sep", { value: "/" })
+      })
+      afterAll(() => {
+        Object.defineProperty(path, "sep", { value: origSep })
+      })
+      test("should work for non-windows paths", async () => {
+        expect(handlebarsParse(blankConf, "/home/test/{{name}}.txt", { isPath: true })).toEqual(
+          Buffer.from("/home/test/test.txt")
+        )
+      })
+    })
+    test("should not do path escaping on non-path compiles", async () => {
+      expect(
+        handlebarsParse(
+          { ...blankConf, data: { ...blankConf.data, escaped: "value" } },
+          "/home/test/{{name}} \\{{escaped}}.txt",
+          {
+            isPath: false,
+          }
+        )
+      ).toEqual(Buffer.from("/home/test/test {{escaped}}.txt"))
+    })
+  })
+
+  describe("Helpers", () => {
+    describe("date helpers", () => {
+      describe("now", () => {
+        test("should work without extra params", () => {
+          const now = new Date()
+          const fmt = "yyyy-MM-dd HH:mm"
+
+          expect(nowHelper(fmt)).toEqual(dateFns.format(now, fmt))
+        })
+      })
+
+      describe("date", () => {
+        test("should work with no offset params", () => {
+          const now = new Date()
+          const fmt = "yyyy-MM-dd HH:mm"
+
+          expect(dateHelper(now.toISOString(), fmt)).toEqual(dateFns.format(now, fmt))
+        })
+
+        test("should work with offset params", () => {
+          const now = new Date()
+          const fmt = "yyyy-MM-dd HH:mm"
+
+          expect(dateHelper(now.toISOString(), fmt, -1, "days")).toEqual(
+            dateFns.format(dateFns.add(now, { days: -1 }), fmt)
+          )
+          expect(dateHelper(now.toISOString(), fmt, 1, "months")).toEqual(
+            dateFns.format(dateFns.add(now, { months: 1 }), fmt)
+          )
+        })
+      })
+    })
+  })
+})

tsconfig.json

@@ -1,14 +1,23 @@
 {
   "compilerOptions": {
-    "target": "es5",
+    "target": "ES2019",
     "module": "commonjs",
-    "lib": ["es2017", "es6"],
+    "moduleResolution": "node",
+    "esModuleInterop": true,
+    "lib": [
+      "ES2019",
+    ],
     "declaration": true,
     "outDir": "dist",
     "strict": true,
-    "sourceMap": true
+    "sourceMap": true,
+    "removeComments": false,
   },
+  "include": [
+    "src/index.ts",
+    "src/cmd.ts",
+  ],
   "exclude": [
-    "examples"
+    "tests/*"
   ]
 }

webpack.config.js

@@ -1,43 +0,0 @@
-const path = require('path')
-const webpack = require('webpack')
-const nodeExternals = require('webpack-node-externals')
-
-module.exports = {
-  devtool: process.env.NODE_ENV === 'develop' ? 'inline-source-map' : 'source-map',
-  target: 'node',
-  entry: {
-    scaffold: './scaffold.ts',
-    test: './test.ts',
-    cmd: './cmd.ts',
-  },
-  output: {
-    filename: '[name].js',
-    path: path.resolve(__dirname, 'dist'),
-    devtoolModuleFilenameTemplate: '[absolute-resource-path]',
-    library: 'library',
-    libraryTarget: 'umd',
-  },
-  resolve: {
-    extensions: ['.ts']
-  },
-  externals: [nodeExternals()],
-  module: {
-    rules: [
-      {
-        test: /\.tsx?$/,
-        loader: 'ts-loader',
-        exclude: ['./examples', 'node_modules']
-      }
-    ]
-  },
-  plugins: [
-    new webpack.DefinePlugin({
-      '__dirname': '__dirname'
-    }),
-    new webpack.BannerPlugin({
-      banner: '#!/usr/bin/env node',
-      raw: true,
-      include: /cmd\.js/,
-    })
-  ],
-}