[SYNC] refactor: deprecate polyfillDynamicImport (#4373)

[github-actions]

refactor: deprecate polyfillDynamicImport (#4373) (318cb43)

---

+++ b/docs/config/index.md
@@ -55,7 +55,7 @@ Vite also directly supports TS config files. You can use `vite.config.ts` with t
If the config needs to conditional determine options based on the command (`serve` or `build`) or the [mode](/guide/env-and-mode) being used, it can export a function instead:
```js
-export default ({ command, mode }) => {
+export default defineConfig(({ command, mode }) => {
if (command === 'serve') {
return {
// serve specific config
@@ -65,7 +65,7 @@ export default ({ command, mode }) => {
// build specific config
}
}
-}
+})
```
### Async Config
@@ -73,7 +73,7 @@ export default ({ command, mode }) => {
If the config needs to call async function, it can export a async function instead:
```js
-export default async ({ command, mode }) => {
+export default defineConfig(async ({ command, mode }) => {
const data = await asyncFunction()
return {
// build specific config
@@ -242,7 +242,7 @@ export default async ({ command, mode }) => {
Specify options to pass to CSS pre-processors. Example:
```js
-  export default {
+  export default defineConfig({
css: {
preprocessorOptions: {
scss: {
@@ -250,7 +250,7 @@ export default async ({ command, mode }) => {
}
}
}
-  }
+  })
```
### json.namedExports
@@ -276,12 +276,12 @@ export default async ({ command, mode }) => {
`ESBuildOptions` extends [ESbuild's own transform options](https://esbuild.github.io/api/#transform-api). The most common use case is customizing JSX:
```js
-  export default {
+  export default defineConfig({
esbuild: {
jsxFactory: 'h',
jsxFragment: 'Fragment'
}
-  }
+  })
```
By default, ESBuild is applied to `ts`, `jsx` and `tsx` files. You can customize this with `esbuild.include` and `esbuild.exclude`, both of which expect type of `string | RegExp | (string | RegExp)[]`.
@@ -289,11 +289,11 @@ export default async ({ command, mode }) => {
In addition, you can also use `esbuild.jsxInject` to automatically inject JSX helper imports for every file transformed by ESBuild:
```js
-  export default {
+  export default defineConfig({
esbuild: {
jsxInject: `import React from 'react'`
}
-  }
+  })
```
Set to `false` to disable ESbuild transforms.
@@ -374,11 +374,11 @@ export default async ({ command, mode }) => {
**Example:**
```js
-  export default {
+  export default defineConfig({
server: {
open: '/docs/index.html'
}
-  }
+  })
```
### server.proxy
@@ -392,7 +392,7 @@ export default async ({ command, mode }) => {
**Example:**
```js
-  export default {
+  export default defineConfig({
server: {
proxy: {
// string shorthand
@@ -419,7 +419,7 @@ export default async ({ command, mode }) => {
}
}
}
-  }
+  })
```
### server.cors
@@ -514,14 +514,14 @@ createServer()
Accepts a path to specify the custom workspace root. Could be a absolute path or a path relative to [project root](/guide/#index-html-and-project-root). For example
```js
-  export default {
+  export default defineConfig({
server: {
fs: {
// Allow serving files from one level up to the project root
allow: ['..']
}
}
-  }
+  })
```
## Build Options
@@ -543,23 +543,6 @@ createServer()
Note the build will fail if the code contains features that cannot be safely transpiled by esbuild. See [esbuild docs](https://esbuild.github.io/content-types/#javascript) for more details.
-### build.polyfillDynamicImport
-
-- **Type:** `boolean`
-- **Default:** `false`
-
-  Whether to automatically inject [dynamic import polyfill](https://github.com/GoogleChromeLabs/dynamic-import-polyfill).
-
-  If set to true, the polyfill is auto injected into the proxy module of each `index.html` entry. If the build is configured to use a non-html custom entry via `build.rollupOptions.input`, then it is necessary to manually import the polyfill in your custom entry:
-
-  ```js
-  import 'vite/dynamic-import-polyfill'
-  ```
-
-  When using [`@vitejs/plugin-legacy`](https://github.com/vitejs/vite/tree/main/packages/plugin-legacy), the plugin sets this option to `true` automatically.
-
-  Note: the polyfill does **not** apply to [Library Mode](/guide/build#library-mode). If you need to support browsers without native dynamic import, you should probably avoid using it in your library.
-
### build.outDir
- **Type:** `string`