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import fetch2, { fetch, Response, Request, Headers } from "node-fetch";
import * as iso from "isomorphic-fetch";
import * as vercelFetch from "@vercel/fetch";
import * as stream from "stream";
import { test, expect } from "bun:test";
test("node-fetch", () => {
expect(Response.prototype).toBeInstanceOf(globalThis.Response);
expect(Request).toBe(globalThis.Request);
expect(Headers).toBe(globalThis.Headers);
expect(fetch2.default).toBe(fetch2);
expect(fetch2.Response).toBe(Response);
});
for (const [impl, name] of [
[fetch, "node-fetch.fetch"],
[fetch2, "node-fetch.default"],
[fetch2.default, "node-fetch.default.default"],
[iso.fetch, "isomorphic-fetch.fetch"],
[iso.default.fetch, "isomorphic-fetch.default.fetch"],
[iso.default, "isomorphic-fetch.default"],
[vercelFetch.default(fetch), "@vercel/fetch.default"],
]) {
test(name + " fetches", async () => {
const server = Bun.serve({
port: 0,
fetch(req, server) {
server.stop();
return new Response("it works");
},
});
expect(await impl("http://" + server.hostname + ":" + server.port)).toBeInstanceOf(globalThis.Response);
server.stop(true);
});
}
test("node-fetch uses node streams instead of web streams", async () => {
const server = Bun.serve({
port: 0,
async fetch(req, server) {
const body = await req.text();
expect(body).toBe("the input text");
return new Response("hello world");
},
});
try {
const result = await fetch2("http://" + server.hostname + ":" + server.port, {
body: new stream.Readable({
read() {
this.push("the input text");
this.push(null);
},
}),
method: "POST",
});
expect(result.body).toBeInstanceOf(stream.Readable);
expect(result.body === result.body).toBe(true); // cached lazy getter
const chunks = [];
for await (const chunk of result.body) {
chunks.push(chunk);
}
expect(Buffer.concat(chunks).toString()).toBe("hello world");
} finally {
server.stop(true);
}
});
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