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node_modules/es-abstract/2024/RegExpHasFlag.js

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+'use strict';
+
+var GetIntrinsic = require('get-intrinsic');
+var callBound = require('call-bound');
+
+var $TypeError = require('es-errors/type');
+var $RegExpPrototype = GetIntrinsic('%RegExp.prototype%');
+
+var SameValue = require('./SameValue');
+
+var isObject = require('../helpers/isObject');
+
+var $indexOf = callBound('String.prototype.indexOf');
+
+var hasRegExpMatcher = require('is-regex');
+var getFlags = require('regexp.prototype.flags');
+
+// https://262.ecma-international.org/13.0/#sec-regexphasflag
+
+module.exports = function RegExpHasFlag(R, codeUnit) {
+	if (typeof codeUnit !== 'string' || codeUnit.length !== 1) {
+		throw new $TypeError('Assertion failed: `string` must be a code unit - a String of length 1');
+	}
+
+	if (!isObject(R)) {
+		throw new $TypeError('Assertion failed: Type(R) is not Object');
+	}
+
+	if (!hasRegExpMatcher(R)) { // step 2
+		if (SameValue(R, $RegExpPrototype)) {
+			return void undefined; // step 2.a
+		}
+		throw new $TypeError('`R` must be a RegExp object'); // step 2.b
+	}
+
+	var flags = getFlags(R); // step 3
+
+	return $indexOf(flags, codeUnit) > -1; // steps 4-5
+};