Update index.md (#4844)

cunzaizhuyi · web-flow · commit 97fb73c1ae18 · 2023-02-07T16:50:16.000+01:00
diff --git a/docs/plugin-development/index.md b/docs/plugin-development/index.md
@@ -297,7 +297,7 @@ Notifies a plugin when the watcher process will close so that all open resources
 | Previous: | [`resolveId`](#resolveid) or [`resolveDynamicImport`](#resolvedynamicimport) where the loaded id was resolved. Additionally, this hook can be triggered at any time from plugin hooks by calling [`this.load`](#this-load) to preload the module corresponding to an id |
 | Next: | [`transform`](#transform) to transform the loaded file if no cache was used, or there was no cached copy with the same `code`, otherwise [`shouldTransformCachedModule`](#shouldtransformcachedmodule) |
 
-Defines a custom loader. Returning `null` defers to other `load` functions (and eventually the default behavior of loading from the file system). To prevent additional parsing overhead in case e.g. this hook already used `this.parse` to generate an AST for some reason, this hook can optionally return a `{ code, ast, map }` object. The `ast` must be a standard ESTree AST with `start` and `end` properties for each node. If the transformation does not move code, you can preserve existing sourcemaps by setting `map` to `null`. Otherwise, you might need to generate the source map. See [the section on source code transformations](#source-code-transformations).
+Defines a custom loader. Returning `null` defers to other `load` functions (and eventually the default behavior of loading from the file system). To prevent additional parsing overhead in case e.g. this hook already used `this.parse` to generate an AST for some reason, this hook can optionally return a `{ code, ast, map }` object. The `ast` must be a standard ESTree AST with `start` and `end` properties for each node. If the transformation does not move code, you can preserve existing sourcemaps by setting `map` to `null`. Otherwise, you might need to generate the source map. See the section on [source code transformations](#source-code-transformations).
 
 If `false` is returned for `moduleSideEffects` and no other module imports anything from this module, then this module will not be included in the bundle even if the module would have side effects. If `true` is returned, Rollup will use its default algorithm to include all statements in the module that have side effects (such as modifying a global or exported variable). If `"no-treeshake"` is returned, treeshaking will be turned off for this module and it will also be included in one of the generated chunks even if it is empty. If `null` is returned or the flag is omitted, then `moduleSideEffects` will be determined by the first `resolveId` hook that resolved this module, the [`treeshake.moduleSideEffects`](../configuration-options/index.md#treeshake-modulesideeffects) option, or eventually default to `true`. The `transform` hook can override this.
 
