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 3724x 24x 24x 24x 24x 24x 24x 24x 24x 157585x 157585x 157585x 157585x 24x 187706x 187706x 187706x 24x 157585x 157585x 157585x 19344x 14x 14x 14x 19330x 19330x 138241x 138241x 138241x 157585x 24x 24x 24x 24x 24x  
'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
};