[Linux] Can't open libasound.so.2

[Aworldc]

Coming from Tonejs/Tone.js#309, trying to get tone to work under node.

Added the following into my main.js in hopes :

import { OfflineAudioContext } from 'node-web-audio-api'
globalThis.window = { OfflineAudioContext }

Got the following error:

[nix-shell:~/sp]$ node src/main.js
node:internal/modules/cjs/loader:1661
  return process.dlopen(module, path.toNamespacedPath(filename));
                 ^

Error: libasound.so.2: cannot open shared object file: No such file or directory
    at Module._extensions..node (node:internal/modules/cjs/loader:1661:18)
    at Module.load (node:internal/modules/cjs/loader:1266:32)
    at Module._load (node:internal/modules/cjs/loader:1091:12)
    at Module.require (node:internal/modules/cjs/loader:1289:19)
    at require (node:internal/modules/helpers:182:18)
    at Object.<anonymous> (/home/allan/sp/node_modules/.pnpm/node-web-audio-api@1.0.7/node_modules/node-web-audio-api/load-native.cjs:56:27)
    at Module._compile (node:internal/modules/cjs/loader:1521:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1623:10)
    at Module.load (node:internal/modules/cjs/loader:1266:32)
    at Module._load (node:internal/modules/cjs/loader:1091:12) {
  code: 'ERR_DLOPEN_FAILED'
}

Node.js v20.19.6

Searched the library, found it should be in the alsa-lib package on nixos, but I get the error even with the following packages installed:

let
  nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-25.11";
  pkgs = import nixpkgs { config = {}; overlays = []; };
in

pkgs.mkShellNoCC {
  packages = with pkgs; [
    deno
    ffmpeg
    python311
    imagemagick
    alsa-lib
  ];
}

Where do I even start to debug this?

[b-ma]

Hey,

I have made a simple example working with Tone.js there: #166 (still really rough and using a very simple example but it seems it can work)

Regarding your OS issue, I really can't help (we don't have the resources to support all exotic linux distros out there). Maybe you can try to build the lib on your machine? cf. https://github.com/ircam-ismm/node-web-audio-api?tab=readme-ov-file#manual-build

[Aworldc]

Nevermind, I managed to make it work by having node spin up an express.js server, start a child process that runs `firefox http://localhost:3000`, have that webpage run tone, format the output into a wav file, and post that back to the server, which writes it to a file and runs `process.exit`, and then webpage catches the fetch error caused by the server terminating, treats it as a success signal, and calls `window.close`. I know that sounds absolutely horrible, but it works, and that's good enough for my current use case.