Convert the codebase to modules by jakebailey · Pull Request #51387 · microsoft/TypeScript

This is it; the PR that converts the TypeScript repo from namespaces to modules. TL;DR: The TypeScript compiler is now implemented internally with modules, not namespaces. The compiler is now 10-25% faster. tsc is now 30% faster to start. Our npm package is now 43% smaller. More improvements are in the works. If you're reading this and the 5.0 beta is out, now that the above results were as of thi

[jay-es]

TypeScript のコードベースが namespace から ESM に移行。コンパイラーは 10-25% 高速化、tsc の起動も 30% ほど早くなり、パッケージは 43% 小さくなる。出力されるファイルの内容は大きく変わるので注意とのこと

[yug1224]

"What can one say in the face of 280,000 changed lines but LGTM?"

[teppeis]

TypeScriptの内部をnamespaceからmoduleに書き換える大きな変更がいよいよ入る