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url: /reference/TypeAlias.CodeSplittingNameFunction.md
---
# Type Alias: CodeSplittingNameFunction

* **Type**: (`moduleId`, `ctx`) => `string` | `NullValue`

## Parameters

### moduleId

`string`

### ctx

#### getModuleInfo

(`moduleId`) => [`ModuleInfo`](Interface.ModuleInfo.md) | `null`

The returned object and its dependency arrays are reused within the current chunking pass.
Treat graph fields as read-only. `meta` properties and the `moduleSideEffects` field remain mutable.

## Returns

`string` | `NullValue`