add all frontend files

node_modules/es-abstract/2024/IteratorStep.js

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+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var IteratorComplete = require('./IteratorComplete');
+var IteratorNext = require('./IteratorNext');
+
+var isIteratorRecord = require('../helpers/records/iterator-record');
+
+// https://262.ecma-international.org/15.0/#sec-iteratorstep
+
+module.exports = function IteratorStep(iteratorRecord) {
+	if (!isIteratorRecord(iteratorRecord)) {
+		throw new $TypeError('Assertion failed: `iteratorRecord` must be an Iterator Record'); // step 1
+	}
+
+	var result = IteratorNext(iteratorRecord); // step 1
+	var done = IteratorComplete(result); // step 2
+	return done === true ? false : result; // steps 3-4
+};
+