code: function parseModifiers(packet, bits) {
    /* eslint-disable no-bitwise */
    /* eslint-disable no-param-reassign */
    packet.modifiers.l_control = ((bits & 1) !== 0);
    packet.modifiers.l_shift = ((bits & 2) !== 0);
    packet.modifiers.l_alt = ((bits & 4) !== 0);
    packet.modifiers.l_meta = ((bits & 8) !== 0);
    packet.modifiers.r_control = ((bits & 16) !== 0);
    packet.modifiers.r_shift = ((bits & 32) !== 0);
    packet.modifiers.r_alt = ((bits & 64) !== 0);
    packet.modifiers.r_meta = ((bits & 128) !== 0);
    /* eslint-enable no-bitwise */
    /* eslint-enable no-param-reassign */
  }
docs: Convert modifier key bits into
  array of human-readable identifiers