core-js/internals/iterator-chunk-size-validation.js

Standard library

'use strict';
var isIntegralNumber = require('../internals/is-integral-number');
var iteratorClose = require('../internals/iterator-close');

var $RangeError = RangeError;
var $TypeError = TypeError;

var CHUNK_SIZE_VALIDATION_ERROR = 'Chunk size must be an integer in [1, 2^32-1]';

module.exports = function (chunkSize, iterator) {
  if (typeof chunkSize != 'number' || !isIntegralNumber(chunkSize)) {
    return iteratorClose(iterator, 'throw', new $TypeError(CHUNK_SIZE_VALIDATION_ERROR));
  }
  if (chunkSize === 0 || chunkSize >>> 0 !== chunkSize) {
    return iteratorClose(iterator, 'throw', new $RangeError(CHUNK_SIZE_VALIDATION_ERROR));
  }
};