🤖 Merge PR #63278 [is-async-function] Add types for is-async-function by @leondreamed

types/is-async-function/index.d.ts

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+// Type definitions for is-async-function 2.0
+// Project: https://github.com/inspect-js/is-async-function
+// Definitions by: Leon Si <https://github.com/leondreamed>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare function isAsyncFunction(fn: unknown): boolean;
+
+export = isAsyncFunction;

types/is-async-function/is-async-function-tests.ts

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+import isAsyncFunction = require('is-async-function');
+
+isAsyncFunction(() => {}); // $ExpectType boolean
+isAsyncFunction(null); // $ExpectType boolean
+
+// $ExpectType boolean
+isAsyncFunction(function*() {
+    yield 42;
+    return Infinity;
+});
+
+isAsyncFunction(async () => {}); // $ExpectType boolean

types/is-async-function/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "is-async-function-tests.ts"
+    ]
+}

types/is-async-function/tslint.json

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+{ "extends": "@definitelytyped/dtslint/dt.json" }