Not able to import defineConfig from Vite

[mxschmitt]

➜  vite-import-tsc git:(main) npx tsc -p .                                                        
➜  vite-import-tsc git:(main) /Users/maxschmitt/Developer/tmp/typescript-go/built/local/tsgo  -p .
vite.config.ts:17:10 - error TS2305: Module '"/Users/maxschmitt/Developer/tmp/vite-import-tsc/node_modules/vite/index"' has no exported member 'defineConfig'.

17 import { defineConfig } from 'vite';
            ~~~~~~~~~~~~

Found 1 error in vite.config.ts:17

➜  vite-import-tsc git:(main) 

Reproduction: https://github.com/mxschmitt/typescript-go-issue-vite-defineConfig-types.git

tsc works while tsgo does not.

Commit: 5cae442

Extracted minimal reproduction from #895.

[jrmyio]

Possibly related to #518

[Andarist]

Does the issue persist with the recent builds? I can't repro it

[wojtekmaj]

It does not!

PS C:\server> yarn tsc
vitest.config.ts:9:18 - error TS7006: Parameter 'id' implicitly has an 'any' type.

9       async load(id) {
                   ~~

Found 1 error in 1 file.

Errors  Files
     1  vitest.config.ts:9

PS C:\server> yarn up @typescript/native-preview -R
➤ YN0000: · Yarn 4.9.1
➤ YN0000: ┌ Resolution step
➤ YN0085: │ + @typescript/native-preview@npm:7.0.0-dev.20250619.1, and 7 more.
➤ YN0085: │ - @typescript/native-preview-darwin-arm64@npm:7.0.0-dev.20250528.1, and 7 more.
➤ YN0000: └ Completed in 1s 967ms
➤ YN0000: ┌ Fetch step
➤ YN0013: │ 7 packages were added to the project, and 7 were removed (+ 11.24 MiB).
➤ YN0000: └ Completed in 2s 268ms
➤ YN0000: ┌ Link step
➤ YN0008: │ server@workspace:. must be rebuilt because its dependency tree changed
➤ YN0000: └ Completed in 1s 283ms
➤ YN0000: · Done in 5s 610ms
PS C:\server> yarn tsc
PS C:\server>

[mxschmitt]

Closing as fixed - Thanks!

[Marsup]

I'm personally still seeing it on 7.0.0-dev.20250620.1.

EDIT: it looks like it happens on project configured in commonjs or with commonjs set as module in tsconfig. It seems to only be fixed if the module system is set as ESM for both the project and tsconfig.

[smaccoun]

Was fixed for me about a week ago and I've been routinely updating. Not sure what PR fixed it but has been good for me

[Andarist]

@Marsup please provide a repro case so somebody could investigate further

[Marsup]

Here it is: https://github.com/Marsup/typescript-go-issue-904
Just run npm ci && npm test