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[Repair] #1823 Getters are re-evaluated on every access #1860

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merged 2 commits into from
Oct 30, 2020
Merged

[Repair] #1823 Getters are re-evaluated on every access #1860

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[Repair] #1823 Getters are re-evaluated on every access
jnxey Oct 27, 2020
30c7559
style: adjust code style
kiaking Oct 30, 2020
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6 changes: 5 additions & 1 deletion src/store.js
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Original file line number Diff line number Diff line change
Expand Up @@ -286,13 +286,17 @@ function resetStoreState (store, state, hot) {
store._makeLocalGettersCache = Object.create(null)
const wrappedGetters = store._wrappedGetters
const computedObj = {}
const computedCache = {}
forEachValue(wrappedGetters, (fn, key) => {
// use computed to leverage its lazy-caching mechanism
// direct inline function use will lead to closure preserving oldVm.
// using partial to return function with only arguments preserved in closure environment.
computedObj[key] = partial(fn, store)
computedCache[key] = computed(() => {
return computedObj[key]()
})
Object.defineProperty(store.getters, key, {
get: () => computed(() => computedObj[key]()).value,
get: () => computedCache[key].value,
enumerable: true // for local getters
})
})
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