Support multi-threaded compilation for --build

Search Terms

Project references, multi-thread, compilation, performance

Suggestion

We have migrated our main project to use project references. It simplifies the development workflow, but brings basically 0 noticeable performance improvement (for both local development and CI). There's even an illusion that now we get worse performance during development.

I guess the main reason behind this is lacking support for multi-thread compilation.

Use Cases

Improve compilation performance.

Examples

N/A

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, etc.)
• This feature would agree with the rest of TypeScript's Design Goals.

この issue では --build ワークフローが示されていますが、ファイル、テスト、実装のエントリーポイントは特定されていません。まず --build のコンパイルパスを見つけ、プロジェクト参照がどのようにコンパイルされるかを確認してください。マルチスレッドコンパイルによってパフォーマンスが向上し、生成される JavaScript や既存のランタイム動作が変わらなければ完了です。