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 3719x 19x 19x 19x 19x 19x 19x 19x 19x 150145x 150145x 150145x 150145x 19x 178889x 178889x 178889x 19x 150145x 150145x 150145x 19007x 14x 14x 14x 18993x 18993x 131138x 131138x 131138x 150145x 19x 19x 19x 19x 19x  
'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
};