Pure javascript mp3 decoder, translate from go-mp3 project.

let Mp3 = require('js-mp3');

var mp3ArrayBuffer = ...; // prepare your mp3 decoded array buffer here

var decoder = Mp3.newDecoder(mp3ArrayBuffer);
var pcmArrayBuffer = decoder.decode(); // now you got decoded PCM data

you can visit js-mp3-example project to see how to decode mp3 file then play it.

• rewire: https://github.com/jhnns/rewire
• Mocha: https://mochajs.org/
• Chai: https://github.com/chaijs/chai
• Istanbul: https://github.com/gotwarlost/istanbul

Run tests with:

$ npm test

Get coverage report:

$ npm run coverage 

Then you can find the report html here: {project_location}/coverage/lcov-report/index.html.

It put all decoded pcm data in ArrayBuffer now, so you'd better not use it to decode big size MP3 file.