initial commit. phase 1 complete

frontend/node_modules/which-collection/index.d.ts

@@ -0,0 +1,13 @@
+/**
+ * Determines the type of the given collection, or returns false.
+ *
+ * @param {unknown} value The potential collection
+ * @returns {'Map' | 'Set' | 'WeakMap' | 'WeakSet' | false} 'Map' | 'Set' | 'WeakMap' | 'WeakSet' | false
+ */
+declare function whichCollection<K, V>(value: Map<K, V>): 'Map';
+declare function whichCollection<T>(value: Set<T>): 'Set';
+declare function whichCollection<K extends WeakKey, V>(value: WeakMap<K, V>): 'WeakMap';
+declare function whichCollection<T extends WeakKey>(value: WeakSet<T>): 'WeakSet';
+declare function whichCollection(value: null | undefined | boolean | number | bigint | symbol | unknown): false;
+
+export = whichCollection;