Index: frontend/node_modules/is-symbol/test/index.js
===================================================================
--- frontend/node_modules/is-symbol/test/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/is-symbol/test/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,88 @@
+'use strict';
+
+var test = require('tape');
+var forEach = require('for-each');
+var v = require('es-value-fixtures');
+
+var isSymbol = require('../index');
+
+var hasSymbols = require('has-symbols')();
+var hasToStringTag = require('has-tostringtag/shams')();
+var inspect = require('object-inspect');
+
+test('non-symbol values', function (t) {
+	var nonSymbols = v.nonSymbolPrimitives.concat(
+		Object(true),
+		Object(false),
+		// @ts-expect-error TS sucks with concat
+		{},
+		[],
+		/a/g,
+		new Date(),
+		function () {},
+		NaN
+	);
+	t.plan(nonSymbols.length);
+	forEach(nonSymbols, function (nonSymbol) {
+		t.equal(isSymbol(nonSymbol), false, inspect(nonSymbol) + ' is not a symbol');
+	});
+	t.end();
+});
+
+test('faked symbol values', function (t) {
+	t.test('real symbol valueOf', { skip: !hasSymbols }, function (st) {
+		var fakeSymbol = { valueOf: function () { return Symbol('foo'); } };
+		st.equal(isSymbol(fakeSymbol), false, 'object with valueOf returning a symbol is not a symbol');
+		st.end();
+	});
+
+	t.test('faked @@toStringTag', { skip: !hasToStringTag }, function (st) {
+		/** @type {{ valueOf(): unknown; [Symbol.toStringTag]?: unknown }} */
+		var fakeSymbol = { valueOf: function () { return Symbol('foo'); } };
+		fakeSymbol[Symbol.toStringTag] = 'Symbol';
+		st.equal(isSymbol(fakeSymbol), false, 'object with fake Symbol @@toStringTag and valueOf returning a symbol is not a symbol');
+
+		/** @type {{ valueOf(): unknown; [Symbol.toStringTag]?: unknown }} */
+		var notSoFakeSymbol = { valueOf: function () { return 42; } };
+		notSoFakeSymbol[Symbol.toStringTag] = 'Symbol';
+		st.equal(isSymbol(notSoFakeSymbol), false, 'object with fake Symbol @@toStringTag and valueOf not returning a symbol is not a symbol');
+		st.end();
+	});
+
+	var fakeSymbolString = { toString: function () { return 'Symbol(foo)'; } };
+	t.equal(isSymbol(fakeSymbolString), false, 'object with toString returning Symbol(foo) is not a symbol');
+
+	t.end();
+});
+
+test('Symbol support', { skip: !hasSymbols }, function (t) {
+	t.test('well-known Symbols', function (st) {
+		/** @type {(name: string) => name is Exclude<keyof SymbolConstructor, 'for' | 'keyFor'>} */
+		var isWellKnown = function filterer(name) {
+			return name !== 'for' && name !== 'keyFor' && !(name in filterer);
+		};
+		var wellKnownSymbols = Object.getOwnPropertyNames(Symbol).filter(isWellKnown);
+		wellKnownSymbols.forEach(function (name) {
+			// eslint-disable-next-line no-extra-parens
+			var sym = Symbol[/** @type {keyof SymbolConstructor} */ (name)];
+			st.equal(isSymbol(sym), true, inspect(sym) + ' is a symbol');
+		});
+		st.end();
+	});
+
+	t.test('user-created symbols', function (st) {
+		var symbols = v.symbols.concat(
+			Symbol(),
+			Symbol('foo'),
+			Symbol['for']('foo'),
+			Object(Symbol('object'))
+		);
+		symbols.forEach(function (sym) {
+			st.equal(isSymbol(sym), true, inspect(sym) + ' is a symbol');
+		});
+		st.end();
+	});
+
+	t.end();
+});
+