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docs: Use .mjs extension for library ESM bundle #7714

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docs: Use .mjs extension for library ESM bundle #7714

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8 changes: 4 additions & 4 deletions docs/guide/build.md
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Original file line number Diff line number Diff line change
Expand Up @@ -127,7 +127,7 @@ module.exports = defineConfig({
lib: {
entry: path.resolve(__dirname, 'lib/main.js'),
name: 'MyLib',
fileName: (format) => `my-lib.${format}.js`
fileName: (format) => `my-lib.${format}.${format === 'es' ? 'mjs' : 'js'}`
},
rollupOptions: {
// make sure to externalize deps that shouldn't be bundled
Expand Down Expand Up @@ -159,7 +159,7 @@ Running `vite build` with this config uses a Rollup preset that is oriented towa
```
$ vite build
building for production...
[write] my-lib.es.js 0.08kb, brotli: 0.07kb
[write] my-lib.es.mjs 0.08kb, brotli: 0.07kb
[write] my-lib.umd.js 0.30kb, brotli: 0.16kb
```

Expand All @@ -170,10 +170,10 @@ Recommended `package.json` for your lib:
"name": "my-lib",
"files": ["dist"],
"main": "./dist/my-lib.umd.js",
"module": "./dist/my-lib.es.js",
"module": "./dist/my-lib.es.mjs",
"exports": {
".": {
"import": "./dist/my-lib.es.js",
"import": "./dist/my-lib.es.mjs",
"require": "./dist/my-lib.umd.js"
}
}
Expand Down