All files / lib/internal/streams state.js

100% Statements 36/36
100% Branches 17/17
100% Functions 3/3
100% Lines 36/36

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 3717x 17x 17x 17x 17x 17x 17x 17x 17x 149415x 149415x 149415x 149415x 17x 178265x 178265x 178265x 17x 149415x 149415x 149415x 18874x 14x 14x 14x 18860x 18860x 130541x 130541x 130541x 149415x 17x 17x 17x 17x 17x  
'use strict';
 
const {
  MathFloor,
  NumberIsInteger,
} = primordials;
 
const { ERR_INVALID_ARG_VALUE } = require('internal/errors').codes;
 
function highWaterMarkFrom(options, isDuplex, duplexKey) {
  return options.highWaterMark != null ? options.highWaterMark :
    isDuplex ? options[duplexKey] : null;
}
 
function getDefaultHighWaterMark(objectMode) {
  return objectMode ? 16 : 16 * 1024;
}
 
function getHighWaterMark(state, options, duplexKey, isDuplex) {
  const hwm = highWaterMarkFrom(options, isDuplex, duplexKey);
  if (hwm != null) {
    if (!NumberIsInteger(hwm) || hwm < 0) {
      const name = isDuplex ? `options.${duplexKey}` : 'options.highWaterMark';
      throw new ERR_INVALID_ARG_VALUE(name, hwm);
    }
    return MathFloor(hwm);
  }
 
  // Default value
  return getDefaultHighWaterMark(state.objectMode);
}
 
module.exports = {
  getHighWaterMark,
  getDefaultHighWaterMark
};