function Blob(chunks, opts) {
      chunks = chunks || []
      for (var i = 0, len = chunks.length; i < len; i++) {
        var chunk = chunks[i]
        if (chunk instanceof Blob) {
          chunks[i] = chunk._buffer
        } else if (typeof chunk === 'string') {
          chunks[i] = toUTF8Array(chunk)
        } else if (arrayBufferSupported && (ArrayBuffer.prototype.isPrototypeOf(chunk) || isArrayBufferView(chunk))) {
          chunks[i] = bufferClone(chunk)
        } else if (arrayBufferSupported && isDataView(chunk)) {
          chunks[i] = bufferClone(chunk.buffer)
        } else {
          chunks[i] = toUTF8Array(String(chunk))
        }
      }

      this._buffer = [].concat.apply([], chunks)
      this.size = this._buffer.length
      this.type = opts ? opts.type || '' : ''
    }
function Blob(chunks, opts) {
      chunks = chunks || []
      for (var i = 0, len = chunks.length; i < len; i++) {
        var chunk = chunks[i]
        if (chunk instanceof Blob) {
          chunks[i] = chunk._buffer
        } else if (typeof chunk === 'string') {
          chunks[i] = toUTF8Array(chunk)
        } else if (arrayBufferSupported && (ArrayBuffer.prototype.isPrototypeOf(chunk) || isArrayBufferView(chunk))) {
          chunks[i] = bufferClone(chunk)
        } else if (arrayBufferSupported && isDataView(chunk)) {
          chunks[i] = bufferClone(chunk.buffer)
        } else {
          chunks[i] = toUTF8Array(String(chunk))
        }
      }

      this._buffer = [].concat.apply([], chunks)
      this.size = this._buffer.length
      this.type = opts ? opts.type || '' : ''
    }
function Blob ( chunks , opts ) { chunks = chunks || [ ] for ( var i = 0 , len = chunks . length ; i < len ; i ++ ) { var chunk = chunks [ i ] if ( chunk instanceof Blob ) { chunks [ i ] = chunk . _buffer } else if ( typeof chunk === 'string' ) { chunks [ i ] = toUTF8Array ( chunk ) } else if ( arrayBufferSupported && ( ArrayBuffer . prototype . isPrototypeOf ( chunk ) || isArrayBufferView ( chunk ) ) ) { chunks [ i ] = bufferClone ( chunk ) } else if ( arrayBufferSupported && isDataView ( chunk ) ) { chunks [ i ] = bufferClone ( chunk . buffer ) } else { chunks [ i ] = toUTF8Array ( String ( chunk ) ) } } this . _buffer = [ ] . concat . apply ( [ ] , chunks ) this . size = this . _buffer . length this . type = opts ? opts . type || '' : '' }
***************************************************** /*                   Blob constructor *****************************************************
***************************************************** / * Blob constructor *****************************************************