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types(reactivity): computed types remove as (#367)

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相学长 2019-10-24 23:37:52 +08:00 committed by Evan You
parent 42bf9ca3e5
commit abfb2ec8ed
1 changed files with 10 additions and 7 deletions
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17
packages/reactivity/src/computed.ts
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@ -25,17 +25,20 @@ export function computed<T>(
export function computed<T>(
getterOrOptions: ComputedGetter<T> | WritableComputedOptions<T>
) {
const isReadonly = isFunction(getterOrOptions)
const getter = isReadonly
? (getterOrOptions as ComputedGetter<T>)
: (getterOrOptions as WritableComputedOptions<T>).get
const setter = isReadonly
? __DEV__
let getter: ComputedGetter<T>
let setter: ComputedSetter<T>
if (isFunction(getterOrOptions)) {
getter = getterOrOptions
setter = __DEV__
? () => {
console.warn('Write operation failed: computed value is readonly')
}
: NOOP
: (getterOrOptions as WritableComputedOptions<T>).set
} else {
getter = getterOrOptions.get
setter = getterOrOptions.set
}
let dirty = true
let value: T