mirror of https://github.com/nodejs/corepack.git
81 lines
2.5 KiB
TypeScript
81 lines
2.5 KiB
TypeScript
import assert from 'assert';
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import {UsageError} from 'clipanion';
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import {once} from 'events';
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import {stderr, stdin} from 'process';
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import {Readable} from 'stream';
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export async function fetch(input: string | URL, init?: RequestInit) {
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if (process.env.COREPACK_ENABLE_NETWORK === `0`)
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throw new UsageError(`Network access disabled by the environment; can't reach ${input}`);
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const agent = await getProxyAgent(input);
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if (process.env.COREPACK_ENABLE_DOWNLOAD_PROMPT === `1`) {
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console.error(`Corepack is about to download ${input}.`);
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if (stdin.isTTY && !process.env.CI) {
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stderr.write(`\nDo you want to continue? [Y/n] `);
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stdin.resume();
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const chars = await once(stdin, `data`);
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stdin.pause();
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if (
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chars[0][0] === 0x6e || // n
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chars[0][0] === 0x4e // N
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) {
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throw new UsageError(`Aborted by the user`);
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}
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}
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}
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let response;
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try {
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response = await globalThis.fetch(input, {
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...init,
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dispatcher: agent,
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});
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} catch (error) {
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throw new Error(
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`Error when performing the request to ${input}; for troubleshooting help, see https://github.com/nodejs/corepack#troubleshooting`,
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{cause: error},
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);
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}
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if (!response.ok) {
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await response.arrayBuffer();
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throw new Error(
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`Server answered with HTTP ${response.status} when performing the request to ${input}; for troubleshooting help, see https://github.com/nodejs/corepack#troubleshooting`,
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);
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}
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return response;
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}
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export async function fetchAsJson(input: string | URL, init?: RequestInit) {
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const response = await fetch(input, init);
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return response.json() as Promise<any>;
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}
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export async function fetchUrlStream(input: string | URL, init?: RequestInit) {
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const response = await fetch(input, init);
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const webStream = response.body;
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assert(webStream, `Expected stream to be set`);
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const stream = Readable.fromWeb(webStream);
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return stream;
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}
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async function getProxyAgent(input: string | URL) {
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const {getProxyForUrl} = await import(`proxy-from-env`);
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// @ts-expect-error - The internal implementation is compatible with a WHATWG URL instance
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const proxy = getProxyForUrl(input);
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if (!proxy) return undefined;
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// Doing a deep import here since undici isn't tree-shakeable
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const {default: ProxyAgent} = (await import(
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// @ts-expect-error No types for this specific file
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`undici/lib/proxy-agent.js`
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)) as { default: typeof import('undici').ProxyAgent };
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return new ProxyAgent(proxy);
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}
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