web-audio-beat-detector/build/es5/bundle.js

A beat detection utility which is using the Web Audio API.

(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('web-audio-beat-detector-broker')) :
    typeof define === 'function' && define.amd ? define(['exports', 'web-audio-beat-detector-broker'], factory) :
    (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.webAudioBeatDetector = {}, global.webAudioBeatDetectorBroker));
})(this, (function (exports, webAudioBeatDetectorBroker) { 'use strict';

    var createLoadOrReturnBroker = function createLoadOrReturnBroker(loadBroker, worker) {
      var broker = null;
      return function () {
        if (broker !== null) {
          return broker;
        }
        var blob = new Blob([worker], {
          type: 'application/javascript; charset=utf-8'
        });
        var url = URL.createObjectURL(blob);
        broker = loadBroker(url);
        // Bug #1: Edge up until v18 didn't like the URL to be revoked directly.
        setTimeout(function () {
          return URL.revokeObjectURL(url);
        });
        return broker;
      };
    };

    // This is the minified and stringified code of the web-audio-beat-detector-worker package.
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    var loadOrReturnBroker = createLoadOrReturnBroker(webAudioBeatDetectorBroker.load, worker);
    var analyze = function analyze() {
      var _loadOrReturnBroker;
      return (_loadOrReturnBroker = loadOrReturnBroker()).analyze.apply(_loadOrReturnBroker, arguments);
    };
    var guess = function guess() {
      var _loadOrReturnBroker2;
      return (_loadOrReturnBroker2 = loadOrReturnBroker()).guess.apply(_loadOrReturnBroker2, arguments);
    };

    exports.analyze = analyze;
    exports.guess = guess;

}));