core-js/internals/get-iterator.js

Standard library

var anObject = require('../internals/an-object');
var getIteratorMethod = require('../internals/get-iterator-method');

module.exports = function (it) {
  var iteratorMethod = getIteratorMethod(it);
  if (typeof iteratorMethod != 'function') {
    throw TypeError(String(it) + ' is not iterable');
  } return anObject(iteratorMethod.call(it));
};