feat: supports cts and mts config

[sxzz]

Description

Support mts / cts / cjs config files

closes #5201

Additional context

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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[poyoho]

nice

[sapphi-red]

I noticed this filter needs to be /\.[mc]?[jt]s$/ now.

vite/packages/vite/src/node/config.ts

Line 959 in 9d16253

build.onLoad({ filter: /\.[jt]s$/ }, async (args) => {

For example, this code does not work.

// vite.config.mts
import { u } from './foo.mjs'
console.log(u) // expected: 'file://path/to/foo.mjs', actual: `ReferenceError: __vite_injected_original_import_meta_url is not defined`
// foo.mjs
export const u = import.meta.url

[sxzz]

@sapphi-red
Thanks for reminding. Just fixed!

[sapphi-red]

Thank you!

[sxzz]

Can I backport this feature to 2.x branch?

[andrewbranch]

I don’t think this fully addresses #5201—this only supports .cts and .mts config files, but .cts and .mts source files are not recognized as TypeScript. Is that intended to be supported by Vite?

Unexpected token (Note that you need plugins to import files that are not JavaScript)
file: /Users/andrew/Developer/microsoft/module-resolvers/code/resolvers/vite/main.mts:1:7
1: const x: string = 'hello';
          ^
error during build:
Error: Unexpected token (Note that you need plugins to import files that are not JavaScript)

[bluwy]

Yeah looks like this covers config files only. We should support source files too. Re-opening the issue.