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fix(types): add LiteralUnion type and apply to assetPrefix #6416

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Merged
chenjiahan merged 1 commit into from
Oct 23, 2025
Merged

fix(types): add LiteralUnion type and apply to assetPrefix #6416

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5 changes: 3 additions & 2 deletions packages/core/src/types/config.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,7 @@ import type {
ConfigChain,
ConfigChainMergeContext,
ConfigChainWithContext,
LiteralUnion,
MaybePromise,
OneOrMany,
Optional,
Expand Down Expand Up @@ -1193,7 +1194,7 @@ export interface OutputConfig {
* `auto` means use a relative path based on file location.
* @default `server.base`
*/
assetPrefix?: string | 'auto';
assetPrefix?: LiteralUnion<'auto', string>;
/**
* Set the size threshold to inline static assets such as images and fonts.
* By default, static assets will be Base64 encoded and inline into the page if
Expand Down Expand Up @@ -1734,7 +1735,7 @@ export interface DevConfig {
* similar to the [output.publicPath](https://rspack.rs/config/output#outputpublicpath)
* config of Rspack.
*/
assetPrefix?: string | boolean;
assetPrefix?: LiteralUnion<'auto', string> | boolean;
/**
* Whether to render progress bars to display the build progress.
* @default false
Expand Down
3 changes: 3 additions & 0 deletions packages/core/src/types/utils.ts
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Expand Up @@ -6,6 +6,9 @@ export type MaybePromise<T> = T | Promise<T>;

export type Optional<T, K extends keyof T> = Omit<T, K> & Partial<Pick<T, K>>;

// https://github.com/microsoft/TypeScript/issues/29729
export type LiteralUnion<T extends U, U> = T | (U & Record<never, never>);

/**
* Creates a type with readonly properties at the first and second levels only.
*/
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