can1357
005401e82a
- Extracted fetch mocking logic into reusable `hookFetch()` utility function with middleware-style handler pattern. - Replaced manual `globalThis.fetch` assignment and restoration across 10 test files with `hookFetch()` calls using `using` statement for automatic cleanup. - Implemented Disposable pattern with Symbol.dispose for fetch hook resource management, eliminating try-finally blocks. - Exported `hookFetch` from utils public API to enable consistent fetch mocking across packages.
31 lines
793 B
TypeScript
31 lines
793 B
TypeScript
/**
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* Intercept `globalThis.fetch` with a middleware-style handler.
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*
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* Returns a `Disposable` so callers can use `using` for automatic cleanup:
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*
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* ```ts
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* using _hook = hookFetch((input, init, next) => {
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* if (shouldIntercept(input)) {
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* return new Response("mocked");
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* }
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* return next(input, init);
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* });
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* ```
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*/
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export type FetchHandler = (
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input: string | URL | Request,
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init: RequestInit | undefined,
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next: typeof fetch,
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) => Response | Promise<Response>;
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export function hookFetch(handler: FetchHandler): Disposable {
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const original = globalThis.fetch;
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globalThis.fetch = ((input: string | URL | Request, init?: RequestInit) =>
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handler(input, init, original)) as typeof fetch;
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return {
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[Symbol.dispose]() {
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globalThis.fetch = original;
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},
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};
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}
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