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docs(core): document loaderFS option #5950

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docs(core): document loaderFS option
killagu May 12, 2026
c8c8345
docs(core): address loaderFS doc review
killagu May 12, 2026
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25 changes: 13 additions & 12 deletions packages/core/README.md
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Expand Up @@ -224,18 +224,19 @@ await this.loadExtend('application', app);

### LoaderOptions

| Param | Type | Description |
| ----------- | ----------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ----------------------- |
| directory | `String/Array` | directories to be loaded |
| target | `Object` | attach the target object from loaded files |
| match | `String/Array` | match the files when load, default to `**/*.js`(if process.env.EGG\*TYPESCRIPT was true, default to `[ '\*\*/\_.(js | ts)', '!\*_/_.d.ts' ]`) |
| ignore | `String/Array` | ignore the files when load |
| initializer | `Function` | custom file exports, receive two parameters, first is the inject object(if not js file, will be content buffer), second is an `options` object that contain `path` |
| caseStyle | `String/Function` | set property's case when converting a filepath to property list. |
| override | `Boolean` | determine whether override the property when get the same name |
| call | `Boolean` | determine whether invoke when exports is function |
| inject | `Object` | an object that be the argument when invoke the function |
| filter | `Function` | a function that filter the exports which can be loaded |
| Param | Type | Description |
| ----------- | ----------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| directory | `String/Array` | directories to be loaded |
| target | `Object` | attach the target object from loaded files |
| match | `String/Array` | match the files when load, default to `**/*.js` (if `process.env.EGG_TYPESCRIPT` is true, default to `[ '**/*.(js\|ts)', '!**/*.d.ts' ]`) |
| ignore | `String/Array` | ignore the files when load |
| initializer | `Function` | custom file exports, receive two parameters, first is the inject object (if not js file, will be content buffer), second is an `options` object that contains `path` |
| caseStyle | `String/Function` | set property's case when converting a filepath to property list |
| override | `Boolean` | determine whether override the property when get the same name |
| call | `Boolean` | determine whether invoke when exports is function |
| inject | `Object` | an object that is the argument when invoking the function |
| filter | `Function` | a function that filters the exports which can be loaded |
| loaderFS | `LoaderFS` | loader-facing filesystem abstraction used for discovery, file stats, JSON reads, and module loading |

## Timing

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5 changes: 5 additions & 0 deletions site/docs/advanced/loader.md
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Expand Up @@ -495,6 +495,11 @@ Loading different files uses different configurations:
| app/middleware | false |
| app/service | true |

#### `loaderFS [LoaderFS]`

Customize the filesystem boundary used by `loadToApp` and `loadToContext` for file discovery, file stats, JSON reads, and module loading.
By default, Egg uses `RealLoaderFS`, which delegates to the local filesystem and keeps the existing runtime behavior.

## CustomLoader

You can use `customLoader` instead of `loadToContext` and `loadToApp`.
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5 changes: 5 additions & 0 deletions site/docs/zh-CN/advanced/loader.md
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Expand Up @@ -500,6 +500,11 @@ app.loader.loadToApp(directory, 'model', {
| app/middleware | false |
| app/service | true |

#### loaderFS [LoaderFS]

自定义 `loadToApp` 和 `loadToContext` 使用的文件系统边界，用于文件发现、文件状态读取、JSON 读取和模块加载。
默认使用 `RealLoaderFS`，它会委托给本地文件系统，以保持现有运行时行为。

## CustomLoader

`loadToContext` 和 `loadToApp` 方法可以通过 `customLoader` 的配置来替代。
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6 changes: 6 additions & 0 deletions wiki/log.md
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Expand Up @@ -2,6 +2,12 @@

Dates use the workspace-local Asia/Shanghai calendar date.

## [2026-05-13] docs | sync LoaderFS loader option docs

- sources referenced: `packages/core/src/loader/loader_fs.ts`, `packages/core/src/loader/file_loader.ts`, `packages/core/src/loader/egg_loader.ts`
- pages updated: `packages/core/README.md`, `site/docs/advanced/loader.md`, `site/docs/zh-CN/advanced/loader.md`, `wiki/packages/core.md`, `wiki/log.md`
- note: Added the public `loaderFS` LoaderOptions entry to core and site loader docs, and refreshed the core wiki page to point at those docs.

## [2026-05-07] package | document core LoaderFS boundary

- sources touched: `packages/core/src/index.ts`, `packages/core/src/loader/loader_fs.ts`, `packages/core/src/loader/file_loader.ts`, `packages/core/src/loader/context_loader.ts`, `packages/core/src/loader/egg_loader.ts`
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8 changes: 7 additions & 1 deletion wiki/packages/core.md
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Expand Up @@ -3,12 +3,15 @@ title: Core Package
type: package
summary: Loader, lifecycle, and application core primitives used by Egg runtime packages.
source_files:
- packages/core/README.md
- packages/core/src/index.ts
- packages/core/src/loader/loader_fs.ts
- packages/core/src/loader/file_loader.ts
- packages/core/src/loader/context_loader.ts
- packages/core/src/loader/egg_loader.ts
updated_at: 2026-05-07
- site/docs/advanced/loader.md
- site/docs/zh-CN/advanced/loader.md
updated_at: 2026-05-13
status: active
---

Expand All @@ -33,3 +36,6 @@ runtime behavior by delegating to `fs.existsSync`, `fs.statSync`,
custom `loaderFS`. `EggLoader` passes its loader FS into `loadToApp()` and
`loadToContext()` so later bundled loaders can replace file discovery and module
loading without changing the public loader call sites.

The public loader docs now list `loaderFS` with the other `LoaderOptions` so
custom loader filesystem implementations are discoverable for advanced users.