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fix: Don't create messages declaration file when running next {start,info,telemetry} #1992

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amannn merged 2 commits into from
Aug 21, 2025
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fix: Don't create messages declaration file when running next {start,info,telemetry} #1992

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fix: Don't create messages declaration file when running `next {start…
amannn Aug 21, 2025
77c082a
docs
amannn Aug 21, 2025
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2 changes: 1 addition & 1 deletion docs/src/pages/docs/workflows/typescript.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -219,7 +219,7 @@ const withNextIntl = createNextIntlPlugin({
// ...
```

With this setup in place, you'll see a new declaration file generated in your `messages` directory once you run `next dev` or `next build`:
With this setup in place, you'll see a new declaration file generated in your `messages` directory once you run `next dev`, `next build` or `next typegen`:

```diff
messages/en.json
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12 changes: 12 additions & 0 deletions packages/next-intl/src/plugin/createMessagesDeclaration.tsx
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Expand Up @@ -14,6 +14,18 @@ function runOnce(fn: () => void) {
export default function createMessagesDeclaration(
messagesPaths: Array<string>
) {
const shouldRun = [
'dev',
'build',
'typegen'
// Note: The 'lint' task doesn't consult the
// Next.js config, so we can't detect it here.
].some((arg) => process.argv.includes(arg));

if (!shouldRun) {
return;
}

// Next.js can call the Next.js config multiple
// times - ensure we only run once.
runOnce(() => {
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