add hw2

node_modules/jotai/vanilla/atom.d.ts

@@ -0,0 +1,47 @@
+import type { Store } from './store';
+type Getter = <Value>(atom: Atom<Value>) => Value;
+type Setter = <Value, Args extends unknown[], Result>(atom: WritableAtom<Value, Args, Result>, ...args: Args) => Result;
+type SetAtom<Args extends unknown[], Result> = <A extends Args>(...args: A) => Result;
+/**
+ * setSelf is for internal use only and subject to change without notice.
+ */
+type Read<Value, SetSelf = never> = (get: Getter, options: {
+    readonly signal: AbortSignal;
+    readonly setSelf: SetSelf;
+}) => Value;
+type Write<Args extends unknown[], Result> = (get: Getter, set: Setter, ...args: Args) => Result;
+type WithInitialValue<Value> = {
+    init: Value;
+};
+type OnUnmount = () => void;
+type OnMount<Args extends unknown[], Result> = <S extends SetAtom<Args, Result>>(setAtom: S) => OnUnmount | void;
+export interface Atom<Value> {
+    toString: () => string;
+    read: Read<Value>;
+    debugLabel?: string;
+    /**
+     * To ONLY be used by Jotai libraries to mark atoms as private. Subject to change.
+     * @private
+     */
+    debugPrivate?: boolean;
+    /**
+     * Fires after atom is referenced by the store for the first time
+     * This is still an experimental API and subject to change without notice.
+     */
+    unstable_onInit?: (store: Store) => void;
+}
+export interface WritableAtom<Value, Args extends unknown[], Result> extends Atom<Value> {
+    read: Read<Value, SetAtom<Args, Result>>;
+    write: Write<Args, Result>;
+    onMount?: OnMount<Args, Result>;
+}
+type SetStateAction<Value> = Value | ((prev: Value) => Value);
+export type PrimitiveAtom<Value> = WritableAtom<Value, [
+    SetStateAction<Value>
+], void>;
+export declare function atom<Value, Args extends unknown[], Result>(read: Read<Value, SetAtom<Args, Result>>, write: Write<Args, Result>): WritableAtom<Value, Args, Result>;
+export declare function atom<Value>(read: Read<Value>): Atom<Value>;
+export declare function atom<Value, Args extends unknown[], Result>(initialValue: Value, write: Write<Args, Result>): WritableAtom<Value, Args, Result> & WithInitialValue<Value>;
+export declare function atom<Value>(): PrimitiveAtom<Value | undefined> & WithInitialValue<Value | undefined>;
+export declare function atom<Value>(initialValue: Value): PrimitiveAtom<Value> & WithInitialValue<Value>;
+export {};