zip.compress promise does not resolve if compressing 3 or more files

[mbertogliati]

This one is tricky, it took me a while to find the cause of it.
If I have an array of 3 files, and then compress them and wrap them in a Promise.all(), that promise does not resolve.
Minimal reproducible example:

import { zip } from "jsr:@deno-library/compress";
import { describe, it} from "jsr:@std/testing/bdd";

describe("zip", () => {
  it("should compress N files in a row", async () => {
    const N = 3;
    await Deno.mkdir("/tmp/zip-test", { recursive: true });
    const files: string[] = Array.from({ length: N }, (_, i) => `/tmp/zip-test/file_${i}.txt`);
    await Promise.all(files.map((file, i) => Deno.writeTextFile(file, `Hello, World! ${i}`)));
    await Promise.all(files.map((file, i) => zip.compress(file, `/tmp/zip-test/file_${i}.zip`)));
    await Deno.remove("/tmp/zip-test", { recursive: true });
  });
});

For any N >= 3 this test does not pass as the compress promise does not resolve. The compressed files do appear where they are supposed to, but the promise hangs.
Maybe I'm doing something wrong here, so I would be glad if someone can point me in the right direction.

[fuxingZhang]

The parameter of zip.compress is a file or a directory, and if you want to compress multiple independent files, you should use jsr:@zip-js/zip-js.

https://jsr.io/@zip-js/zip-js