e6049345db
* fix(telegram): preserve HTTP proxy env in global dispatcher workaround * telegram: document request-scoped proxy dispatcher constraint * telegram: assert proxy path never mutates global dispatcher * changelog: credit telegram proxy env regression fix --------- Co-authored-by: Rylen Anil <rylen.anil@gmail.com>
18 lines
898 B
TypeScript
18 lines
898 B
TypeScript
import { ProxyAgent, fetch as undiciFetch } from "undici";
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export function makeProxyFetch(proxyUrl: string): typeof fetch {
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const agent = new ProxyAgent(proxyUrl);
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// undici's fetch is runtime-compatible with global fetch but the types diverge
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// on stream/body internals. Single cast at the boundary keeps the rest type-safe.
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// Keep proxy dispatching request-scoped. Replacing the global dispatcher breaks
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// env-driven HTTP(S)_PROXY behavior for unrelated outbound requests.
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const fetcher = ((input: RequestInfo | URL, init?: RequestInit) =>
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undiciFetch(input as string | URL, {
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...(init as Record<string, unknown>),
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dispatcher: agent,
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}) as unknown as Promise<Response>) as typeof fetch;
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// Return raw proxy fetch; call sites that need AbortSignal normalization
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// should opt into resolveFetch/wrapFetchWithAbortSignal once at the edge.
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return fetcher;
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}
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