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2.0 KiB
2.0 KiB
category
| category |
|---|
| Component |
computedInject
Combine computed and inject
Usage
In Provider Component
import type { InjectionKey, Ref } from 'vue';
import { provide } from 'vue';
interface Item {
key: number;
value: string;
}
export const ArrayKey: InjectionKey<Ref<Item[]>> = Symbol('symbol-key');
const array = ref([
{ key: 1, value: '1' },
{ key: 2, value: '2' },
{ key: 3, value: '3' },
]);
provide(ArrayKey, array);
In Receiver Component
// @filename: provider.ts
// @include: main
// ---cut---
import { computedInject } from '@vueuse/core';
import { ArrayKey } from './provider';
const computedArray = computedInject(ArrayKey, (source) => {
const arr = [...source.value];
arr.unshift({ key: 0, value: 'all' });
return arr;
});
Type Declarations
export type ComputedInjectGetter<T, K> = (source: T | undefined, oldValue?: K) => K;
export type ComputedInjectGetterWithDefault<T, K> = (source: T, oldValue?: K) => K;
export type ComputedInjectSetter<T> = (v: T) => void;
export interface WritableComputedInjectOptions<T, K> {
get: ComputedInjectGetter<T, K>;
set: ComputedInjectSetter<K>;
}
export interface WritableComputedInjectOptionsWithDefault<T, K> {
get: ComputedInjectGetterWithDefault<T, K>;
set: ComputedInjectSetter<K>;
}
export declare function computedInject<T, K = any>(
key: InjectionKey<T> | string,
getter: ComputedInjectGetter<T, K>,
): ComputedRef<K | undefined>;
export declare function computedInject<T, K = any>(
key: InjectionKey<T> | string,
options: WritableComputedInjectOptions<T, K>,
): ComputedRef<K | undefined>;
export declare function computedInject<T, K = any>(
key: InjectionKey<T> | string,
getter: ComputedInjectGetterWithDefault<T, K>,
defaultSource: T,
treatDefaultAsFactory?: false,
): ComputedRef<K>;
export declare function computedInject<T, K = any>(
key: InjectionKey<T> | string,
options: WritableComputedInjectOptionsWithDefault<T, K>,
defaultSource: T | (() => T),
treatDefaultAsFactory: true,
): ComputedRef<K>;