45 lines
1.2 KiB
JavaScript
45 lines
1.2 KiB
JavaScript
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'use strict';
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var $TypeError = require('es-errors/type');
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var AdvanceStringIndex = require('es-abstract/2024/AdvanceStringIndex');
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var Call = require('es-abstract/2024/Call');
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var GetIteratorDirect = require('./GetIteratorDirect');
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var GetMethod = require('es-abstract/2024/GetMethod');
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var IsArray = require('es-abstract/2024/IsArray');
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var Type = require('es-abstract/2024/Type');
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var getIteratorMethod = require('es-abstract/helpers/getIteratorMethod');
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module.exports = function GetIteratorFlattenable(obj, stringHandling) {
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if (Type(obj) !== 'Object') {
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if (stringHandling === 'reject-strings' || typeof obj !== 'string') {
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throw new $TypeError('obj must be an Object'); // step 1.a
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}
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}
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var method = void undefined; // step 2
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// method = GetMethod(obj, Symbol.iterator); // step 5.a
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method = getIteratorMethod(
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{
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AdvanceStringIndex: AdvanceStringIndex,
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GetMethod: GetMethod,
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IsArray: IsArray
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},
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obj
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);
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var iterator;
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if (typeof method === 'undefined') { // step 3
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iterator = obj; // step 3.a
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} else { // step 4
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iterator = Call(method, obj); // step 4.a
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}
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if (Type(iterator) !== 'Object') {
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throw new $TypeError('iterator must be an Object'); // step 5
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}
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return GetIteratorDirect(iterator); // step 6
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};
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