feat(dts): support dts.tsgo

[Timeless0911]

Summary

Support dts.tsgo.

Since watch mode is not supported by tsgo, this PR do rebuild when Rspack triggered to rebuild.

Example: perf improvement for @rsbuild/core

• TypeScript Compiler API

rslib build
  Time (mean ± σ):      2.568 s ±  0.029 s    [User: 5.499 s, System: 0.419 s]
  Range (min … max):    2.524 s …  2.614 s    10 runs

• tsgo

rslib build
  Time (mean ± σ):      1.097 s ±  0.029 s    [User: 2.106 s, System: 0.382 s]
  Range (min … max):    1.049 s …  1.140 s    10 runs

dts.tsgo

• Type: boolean
• Default: false

Whether to generate declaration files with tsgo, which can provide faster generation of declaration files, especially for large projects.

Tip

This feature is currently an experimental feature. Since tsgo is still in the experimental stage, there may be some bugs and unresolved issues or limitations. So, make sure to fully test it in your project before enabling this option.

To enable this option, you need to:

1. Install @typescript/native-preview as a development dependency.

Tip

@typescript/native-preview requires Node.js 20.6.0 or higher.

2. Configure in the Rslib config file:

export default {
  lib: [
    {
      dts: {
        tsgo: true,
      },
    },
  ],
};

3. In order to ensure the consistency of local development, you need to install the corresponding VS Code Preview Extension and add the following configuration in the VS Code settings:

{
  "typescript.experimental.useTsgo": true
}

Related Links

close: #1103

• https://github.com/microsoft/typescript-go

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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[Copilot]

Pull Request Overview

This PR adds support for the experimental dts.experiments.tsgo option, enabling users to generate TypeScript declaration files using the tsgo tool instead of the traditional TypeScript Compiler API.

• Introduces dts.experiments.tsgo configuration option to enable tsgo-based declaration file generation
• Adds comprehensive test coverage for both bundled and unbundled declaration files with tsgo
• Updates documentation to explain the new experimental feature and its usage

Reviewed Changes

Copilot reviewed 138 out of 142 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
packages/core/src/types/config.ts	Adds TypeScript type definitions for the new experiments.tsgo option
packages/plugin-dts/src/tsgo.ts	Implements the tsgo integration with process spawning and output handling
packages/plugin-dts/src/utils.ts	Adds utilities for file renaming and source map content updates
website/docs/**/*.mdx	Updates documentation to describe the new tsgo experimental feature
tests/integration/dts-tsgo/**	Adds comprehensive test cases for tsgo functionality

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

Comments suppressed due to low confidence (1)

website/docs/en/config/lib/dts.mdx:1

• The link to the TypeScript PR is incorrect. Based on the implementation, this should link to the tsgo repository at https://github.com/microsoft/typescript-go instead of the TypeScript PR.

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