function parseBitwiseAnd(state) {
    var node = parseRelational(state);

    while (state.token === '&') {
      // eslint-disable-line no-unmodified-loop-condition
      getTokenSkipNewline(state);
      node = new OperatorNode('&', 'bitAnd', [node, parseRelational(state)]);
    }

    return node;
  }
bitwise and, 'x & y'
@return {Node} node
@private