element-to-vue-instance-registry.js
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import { isVue3 } from '../vue'
let registry = null
if (isVue3) {
registry = new WeakMap()
}
export const registerElementToInstance = (element, instance) => {
if (!isVue3) {
return
}
registry.set(element, instance)
}
export const removeElementToInstance = element => {
if (!isVue3) {
return
}
registry.delete(element)
}
export const getInstanceFromElement = element => {
if (!isVue3) {
return element.__vue__
}
let currentElement = element
while (currentElement) {
if (registry.has(currentElement)) {
/* istanbul ignore next */
return registry.get(currentElement)
}
currentElement = currentElement.parentNode
}
return null
}