index.js

"use strict";

function getPath(name) {
  const os = require("os");
  const path = require("path");

  const binaries = Object.assign(Object.create(null), {
    darwin: ["x64"],
    linux: ["x64", "ia32", "arm64", "arm"],
    win32: ["x64", "ia32"],
  });

  const platform = process.env.npm_config_platform || os.platform();
  const arch = process.env.npm_config_arch || os.arch();

  if (!binaries[platform] || binaries[platform].indexOf(arch) === -1) {
    return null;
  }

  return path.join(__dirname, platform === "win32" ? name + ".exe" : name);
}

exports.ffmpegPath = getPath("ffmpeg");