70 lines
2.2 KiB
TypeScript
70 lines
2.2 KiB
TypeScript
/*
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* Vencord, a modification for Discord's desktop app
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* Copyright (c) 2022 Vendicated and contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import { createWriteStream } from "original-fs";
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import { Readable } from "stream";
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import { finished } from "stream/promises";
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type Url = string | URL;
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export async function checkedFetch(url: Url, options?: RequestInit) {
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try {
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var res = await fetch(url, options);
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} catch (err) {
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if (err instanceof Error && err.cause) {
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err = err.cause;
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}
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throw new Error(`${options?.method ?? "GET"} ${url} failed: ${err}`);
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}
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if (res.ok) {
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return res;
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}
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let message = `${options?.method ?? "GET"} ${url}: ${res.status} ${res.statusText}`;
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try {
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const reason = await res.text();
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message += `\n${reason}`;
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} catch { }
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throw new Error(message);
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}
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export async function fetchJson<T = any>(url: Url, options?: RequestInit) {
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const res = await checkedFetch(url, options);
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return res.json() as Promise<T>;
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}
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export async function fetchBuffer(url: Url, options?: RequestInit) {
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const res = await checkedFetch(url, options);
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const buf = await res.arrayBuffer();
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return Buffer.from(buf);
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}
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export async function downloadToFile(url: Url, path: string, options?: RequestInit) {
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const res = await checkedFetch(url, options);
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if (!res.body) {
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throw new Error(`Download ${url}: response body is empty`);
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}
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// @ts-expect-error weird type conflict
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const body = Readable.fromWeb(res.body);
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await finished(body.pipe(createWriteStream(path)));
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}
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