JSDoc typed function comments inside functions

🔍 Search Terms

"JSDoc inside functions", "JSDoc comments inside", "typed function comments"

✅ Viability Checklist

• This wouldn't be a breaking change in existing TypeScript/JavaScript code
• This wouldn't change the runtime behavior of existing JavaScript code
• This could be implemented without emitting different JS based on the types of the expressions
• This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, new syntax sugar for JS, etc.)
• This isn't a request to add a new utility type: https://github.com/microsoft/TypeScript/wiki/No-New-Utility-Types
• This feature would agree with the rest of our Design Goals: https://github.com/Microsoft/TypeScript/wiki/TypeScript-Design-Goals

⭐ Suggestion

Are we able add support for adding JSDoc typed function comments inside functions, either natively or by a setting?

📃 Motivating Example

Personally, I find it easier to read JSDoc typed function comments when they are indented nicely inside functions, similar to Python, which would also pair really well with code folding.

function arrayMove(index) {
  /**
   * @param {Number} index
   * @return {Array}
   */
  // ...
}

I enquired about this on Stackoverflow last year

💻 Use Cases

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Issue ではファイル、テスト、エントリーポイントが特定されていません。まず、TypeScript が関数本体内の JSDoc コメントをどのように扱うかを確認し、動機となった例に対して意図されている動作を判断してください。done は、JavaScript のランタイム出力を変更せずに、インデントされた JSDoc の型付けがサポートされることを意味するものとします。