feat: Export defineConfig defines the auxiliary function of the configuration

[rxliuli]

This PR contains:

• bugfix
• feature
• refactor
• documentation
• other

Are tests included?

• yes (bugfixes and features will not be merged without tests)
• no

Breaking Changes?

• yes (breaking changes will not be merged unless absolutely necessary)
• no

List any relevant issue numbers: #4125

Description

[github-actions]

Thank you for your contribution! ❤️

You can try out this pull request locally by installing Rollup via

npm install rxliuli/rollup#master

or load it into the REPL:
https://rollupjs.org/repl/?pr=4126

[lukastaegert]

Hi, thanks for the PR, I think this would make a useful addition. Two points:

• Could you fork your PR from master instead of the treeshake-presets branch? That one is still incomplete and not ready for release, so this will block your PR.
• If we add this, we should also document it somewhere on the website (i.e. in the docs folder). Probably similar to what they have on the Vite site (except that we do not directly support TypeScript), somewhere in 01-command-line-reference

[rxliuli]

Hi, thanks for the PR, I think this would make a useful addition. Two points:

• Could you fork your PR from instead of the branch? That one is still incomplete and not ready for release, so this will block your PR.master``treeshake-presets
• If we add this, we should also document it somewhere on the website (i.e. in the folder). Probably similar to what they have on the Vite site (except that we do not directly support TypeScript), somewhere in 01-command-line-referencedocs

Wait a minute, let me revise it and raise a PR again

[lukastaegert]

You could also just have force-pushed to your branch :)

[rxliuli]

You could also just have force-pushed to your branch :)

I created a new PR: #4127