Spaces:
Configuration error
Configuration error
| ; | |
| var GetIntrinsic = require('get-intrinsic'); | |
| var $TypeError = GetIntrinsic('%TypeError%'); | |
| var Call = require('./Call'); | |
| var GetV = require('./GetV'); | |
| var IsCallable = require('./IsCallable'); | |
| var Type = require('./Type'); | |
| // https://262.ecma-international.org/14.0/#sec-getiteratorfrommethod | |
| module.exports = function GetIteratorFromMethod(obj, method) { | |
| if (!IsCallable(method)) { | |
| throw new $TypeError('method must be a function'); | |
| } | |
| var iterator = Call(method, obj); // step 1 | |
| if (Type(iterator) !== 'Object') { | |
| throw new $TypeError('iterator must return an object'); // step 2 | |
| } | |
| var nextMethod = GetV(iterator, 'next'); // step 3 | |
| return { // steps 4-5 | |
| '[[Iterator]]': iterator, | |
| '[[NextMethod]]': nextMethod, | |
| '[[Done]]': false | |
| }; | |
| }; | |