Index: frontend/node_modules/internal-slot/index.js
===================================================================
--- frontend/node_modules/internal-slot/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/internal-slot/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,69 @@
+'use strict';
+
+/** @typedef {`$${import('.').InternalSlot}`} SaltedInternalSlot */
+/** @typedef {{ [k in SaltedInternalSlot]?: unknown }} SlotsObject */
+
+var hasOwn = require('hasown');
+/** @type {import('side-channel').Channel<object, SlotsObject>} */
+var channel = require('side-channel')();
+
+var $TypeError = require('es-errors/type');
+
+/** @type {import('.')} */
+var SLOT = {
+	assert: function (O, slot) {
+		if (!O || (typeof O !== 'object' && typeof O !== 'function')) {
+			throw new $TypeError('`O` is not an object');
+		}
+		if (typeof slot !== 'string') {
+			throw new $TypeError('`slot` must be a string');
+		}
+		channel.assert(O);
+		if (!SLOT.has(O, slot)) {
+			throw new $TypeError('`' + slot + '` is not present on `O`');
+		}
+	},
+	get: function (O, slot) {
+		if (!O || (typeof O !== 'object' && typeof O !== 'function')) {
+			throw new $TypeError('`O` is not an object');
+		}
+		if (typeof slot !== 'string') {
+			throw new $TypeError('`slot` must be a string');
+		}
+		var slots = channel.get(O);
+		// eslint-disable-next-line no-extra-parens
+		return slots && slots[/** @type {SaltedInternalSlot} */ ('$' + slot)];
+	},
+	has: function (O, slot) {
+		if (!O || (typeof O !== 'object' && typeof O !== 'function')) {
+			throw new $TypeError('`O` is not an object');
+		}
+		if (typeof slot !== 'string') {
+			throw new $TypeError('`slot` must be a string');
+		}
+		var slots = channel.get(O);
+		// eslint-disable-next-line no-extra-parens
+		return !!slots && hasOwn(slots, /** @type {SaltedInternalSlot} */ ('$' + slot));
+	},
+	set: function (O, slot, V) {
+		if (!O || (typeof O !== 'object' && typeof O !== 'function')) {
+			throw new $TypeError('`O` is not an object');
+		}
+		if (typeof slot !== 'string') {
+			throw new $TypeError('`slot` must be a string');
+		}
+		var slots = channel.get(O);
+		if (!slots) {
+			slots = {};
+			channel.set(O, slots);
+		}
+		// eslint-disable-next-line no-extra-parens
+		slots[/** @type {SaltedInternalSlot} */ ('$' + slot)] = V;
+	}
+};
+
+if (Object.freeze) {
+	Object.freeze(SLOT);
+}
+
+module.exports = SLOT;