事物都是互相妥协的。就是冰山也会时而消融，时而重新凝聚。——爱默生
分享一个vue库
https://github.com/vueuse/vue-demi
用来解决编写的代码在vue2和vue3之间的兼容问题
安装：
npm i vue-demi
然后修改package.json，将vue 和@vue/composition-api添加到peerDependencies中
{ "dependencies": { "vue-demi": "latest" }, "peerDependencies": { "@vue/composition-api": "^1.0.0-rc.1", "vue": "^2.0.0 || >=3.0.0" }, "peerDependenciesMeta": { "@vue/composition-api": { "optional": true } }, "devDependencies": { "vue": "^3.0.0" // or "^2.6.0" base on your preferred working environment }, }
使用时，就从vue-demi导
import { ref, reactive, defineComponent } from 'vue-demi'
例如这个例子：
https://github.com/vueuse/vue-demi/blob/main/examples/%40vue-demi/use-mouse/src/index.ts
import { ref, onMounted, onUnmounted } from 'vue-demi' export function useMouse() { const x = ref(0) const y = ref(0) const update = (e: MouseEvent) => { x.value = e.pageX y.value = e.pageY } onMounted(() => { window.addEventListener('mousemove', update) }) onUnmounted(() => { window.removeEventListener('mousemove', update) }) return { x, y } }
