4cd4fd28
 郭伟龙
feat: 初始化项目
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import { extend } from '../vue'
import { cloneDeep } from './clone-deep'
import { looseEqual } from './loose-equal'
import { hasOwnProperty, keys } from './object'
const isEmpty = value => !value || keys(value).length === 0
export const makePropWatcher = propName => ({
handler(newValue, oldValue) {
if (looseEqual(newValue, oldValue)) {
return
}
if (isEmpty(newValue) || isEmpty(oldValue)) {
this[propName] = cloneDeep(newValue)
return
}
for (const key in oldValue) {
if (!hasOwnProperty(newValue, key)) {
this.$delete(this.$data[propName], key)
}
}
for (const key in newValue) {
this.$set(this.$data[propName], key, newValue[key])
}
}
})
export const makePropCacheMixin = (propName, proxyPropName) =>
extend({
data() {
return { [proxyPropName]: cloneDeep(this[propName]) }
},
watch: {
// Work around unwanted re-renders: https://github.com/vuejs/vue/issues/10115
[propName]: makePropWatcher(proxyPropName)
}
})
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