Index: frontend/node_modules/internal-slot/test/index.js
===================================================================
--- frontend/node_modules/internal-slot/test/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/internal-slot/test/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,129 @@
+'use strict';
+
+var test = require('tape');
+var inspect = require('object-inspect');
+var forEach = require('for-each');
+
+var SLOT = require('../');
+
+test('assert', function (t) {
+	forEach([null, undefined, true, false, 'foo', '', 42, 0], function (primitive) {
+		t['throws'](
+			// @ts-expect-error
+			function () { SLOT.assert(primitive, ''); },
+			TypeError,
+			inspect(primitive) + ' is not an Object'
+		);
+	});
+
+	forEach([null, undefined, true, false, 42, 0, {}, [], function () {}, /a/g], function (nonString) {
+		t['throws'](
+			// @ts-expect-error
+			function () { SLOT.assert({}, nonString); },
+			TypeError,
+			inspect(nonString) + ' is not a String'
+		);
+	});
+
+	t['throws'](
+		function () { SLOT.assert({}, '[[whatever]]'); },
+		TypeError,
+		'nonexistent slot throws'
+	);
+
+	var o = {};
+	SLOT.set(o, 'x');
+	t.doesNotThrow(function () { SLOT.assert(o, 'x'); }, 'existent slot noops');
+	t['throws'](function () { SLOT.assert(o, 'y'); }, 'thing with a slot throws on a nonexistent slot');
+
+	t.end();
+});
+
+test('has', function (t) {
+	forEach([null, undefined, true, false, 'foo', '', 42, 0], function (primitive) {
+		t['throws'](
+			// @ts-expect-error
+			function () { SLOT.has(primitive, ''); },
+			TypeError,
+			inspect(primitive) + ' is not an Object'
+		);
+	});
+
+	forEach([null, undefined, true, false, 42, 0, {}, [], function () {}, /a/g], function (nonString) {
+		t['throws'](
+			// @ts-expect-error
+			function () { SLOT.has({}, nonString); },
+			TypeError,
+			inspect(nonString) + ' is not a String'
+		);
+	});
+
+	var o = {};
+
+	t.equal(SLOT.has(o, '[[nonexistent]]'), false, 'nonexistent slot yields false');
+
+	SLOT.set(o, 'foo');
+	t.equal(SLOT.has(o, 'foo'), true, 'existent slot yields true');
+
+	t.end();
+});
+
+test('get', function (t) {
+	forEach([null, undefined, true, false, 'foo', '', 42, 0], function (primitive) {
+		t['throws'](
+			// @ts-expect-error
+			function () { SLOT.get(primitive, ''); },
+			TypeError,
+			inspect(primitive) + ' is not an Object'
+		);
+	});
+
+	forEach([null, undefined, true, false, 42, 0, {}, [], function () {}, /a/g], function (nonString) {
+		t['throws'](
+			// @ts-expect-error
+			function () { SLOT.get({}, nonString); },
+			TypeError,
+			inspect(nonString) + ' is not a String'
+		);
+	});
+
+	var o = {};
+	t.equal(SLOT.get(o, 'nonexistent'), undefined, 'nonexistent slot is undefined');
+
+	var v = {};
+	SLOT.set(o, 'f', v);
+	t.equal(SLOT.get(o, 'f'), v, '"get" retrieves value set by "set"');
+
+	t.end();
+});
+
+test('set', function (t) {
+	forEach([null, undefined, true, false, 'foo', '', 42, 0], function (primitive) {
+		t['throws'](
+			// @ts-expect-error
+			function () { SLOT.set(primitive, ''); },
+			TypeError,
+			inspect(primitive) + ' is not an Object'
+		);
+	});
+
+	forEach([null, undefined, true, false, 42, 0, {}, [], function () {}, /a/g], function (nonString) {
+		t['throws'](
+			// @ts-expect-error
+			function () { SLOT.set({}, nonString); },
+			TypeError,
+			inspect(nonString) + ' is not a String'
+		);
+	});
+
+	var o = function () {};
+	t.equal(SLOT.get(o, 'f'), undefined, 'slot not set');
+
+	SLOT.set(o, 'f', 42);
+	t.equal(SLOT.get(o, 'f'), 42, 'slot was set');
+
+	SLOT.set(o, 'f', Infinity);
+	t.equal(SLOT.get(o, 'f'), Infinity, 'slot was set again');
+
+	t.end();
+});