add hw2

node_modules/jotai/vanilla/utils/atomFamily.d.ts

@@ -0,0 +1,25 @@
+import { type Atom } from 'jotai/vanilla';
+/**
+ * in milliseconds
+ */
+type CreatedAt = number;
+type ShouldRemove<Param> = (createdAt: CreatedAt, param: Param) => boolean;
+type Cleanup = () => void;
+type Callback<Param, AtomType> = (event: {
+    type: 'CREATE' | 'REMOVE';
+    param: Param;
+    atom: AtomType;
+}) => void;
+export interface AtomFamily<Param, AtomType> {
+    (param: Param): AtomType;
+    getParams(): Iterable<Param>;
+    remove(param: Param): void;
+    setShouldRemove(shouldRemove: ShouldRemove<Param> | null): void;
+    /**
+     * fires when a atom is created or removed
+     * This API is for advanced use cases, and can change without notice.
+     */
+    unstable_listen(callback: Callback<Param, AtomType>): Cleanup;
+}
+export declare function atomFamily<Param, AtomType extends Atom<unknown>>(initializeAtom: (param: Param) => AtomType, areEqual?: (a: Param, b: Param) => boolean): AtomFamily<Param, AtomType>;
+export {};