Feature request: Ignore JS files when generating declarations

Suggestion

🔍 Search Terms

ignore js files generate declarations

✅ Viability Checklist

My suggestion meets these guidelines:

• 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 feature would agree with the rest of TypeScript's Design Goals.

⭐ Suggestion

The docs for the declaration tsconfig option say:

Generate .d.ts files for every TypeScript or JavaScript file inside your project.

What if it was just TS files, and JS files were ignored?

📃 Motivating Example

I'm getting a bunch of declaration emit errors in JS files. I would rather just ignore them; I'll be converting them to TS eventually and will get higher fidelity. But until then, I'd rather not try to figure out how to annotate the JS to solve this problem.

💻 Use Cases

I'm getting errors that I don't care about.

Không có tệp triển khai hoặc bài kiểm thử nào được nêu tên. Hãy bắt đầu bằng cách lần theo tùy chọn declaration của tsconfig qua trình biên dịch TypeScript và các bài kiểm thử declaration-emit của nó; hoàn tất khi các tệp JavaScript bị loại khỏi việc tạo declaration, còn các tệp TypeScript vẫn tiếp tục phát ra declaration.