Function makeBitMapDescriptor

lib/internal/streams/writable.js:125–134

(bit)

// TODO(benjamingr) it is likely slower to do it this way than with free functions
function makeBitMapDescriptor(bit) {
  return {
    enumerable: false,
    get() { return (this[kState] & bit) !== 0; },
    set(value) {
      if (value) this[kState] |= bit;
      else this[kState] &= ~bit;
    },
  };
}
ObjectDefineProperties(WritableState.prototype, {
  // Object stream flag to indicate whether or not this stream
  // contains buffers or objects.