deno.land / x / jotai@v1.8.4 / src / core / typeUtils.ts

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import type { Atom, PrimitiveAtom, WritableAtom } from './atom'
export type Getter = Parameters<Atom<unknown>['read']>[0]export type Setter = Parameters<WritableAtom<unknown, unknown>['write']>[1]
export type ExtractAtomValue<AtomType> = AtomType extends Atom<infer Value> ? Value : never
export type ExtractAtomUpdate<AtomType> = AtomType extends WritableAtom< unknown, infer Update> ? Update : never
export type ExtractAtomResult<AtomType> = AtomType extends WritableAtom< unknown, unknown, infer Result> ? Result : never
export type SetStateAction<Value> = ExtractAtomUpdate<PrimitiveAtom<Value>>
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2 years ago