_readSingle()

in lib/index.js [72:85]

• 11 lines of code
• 2 McCabe index (conditional complexity)

  _readSingle(idx) {
    let index = idx + 1;
    let sum = this._getTree(index);
    let z = index - (index & -index);

    index--;

    while (index !== z) {
      sum -= this._getTree(index);
      index -= index & -index;
    }

    return sum;
  }