player/js/utils/helpers/arrays.js

var createTypedArray = (function () {
  function createRegularArray(type, len) {
    var i = 0, arr = [], value;
    switch(type) {
      case 'int16':
      case 'uint8c':
        value = 1;
        break;
      default:
        value = 1.1;
        break;
    }
    for(i = 0; i < len; i += 1) {
      arr.push(value);
    }
    return arr;
  }
  function createTypedArray(type, len) {
    if(type === 'float32') {
      return new Float32Array(len);
    } else if(type === 'int16') {
      return new Int16Array(len);
    } else if(type === 'uint8c') {
      return new Uint8ClampedArray(len);
    }
  }
  if(typeof Uint8ClampedArray === 'function' && typeof Float32Array === 'function') {
    return createTypedArray;
  } else {
    return createRegularArray;
  }
}());

function createSizedArray(len) {
  return Array.apply(null, {length:len});
}