source: imaps-frontend/node_modules/es-abstract/2024/GetIteratorFromMethod.js@ 79a0317

'use strict';

var $TypeError = require('es-errors/type');

var Call = require('./Call');
var Get = require('./Get');
var IsCallable = require('./IsCallable');

var isObject = require('../helpers/isObject');

// https://262.ecma-international.org/15.0/#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 (!isObject(iterator)) {
                throw new $TypeError('iterator must return an object'); // step 2
        }

        var nextMethod = Get(iterator, 'next'); // step 3
        return { // steps 4-5
                '[[Iterator]]': iterator,
                '[[NextMethod]]': nextMethod,
                '[[Done]]': false
        };
};