| 12345678910111213141516171819202122232425262728293031323334 | import * as Vue from 'vue'var isVue2 = falsevar isVue3 = truevar Vue2 = undefinedfunction install() {}export function set(target, key, val) {  if (Array.isArray(target)) {    target.length = Math.max(target.length, key)    target.splice(key, 1, val)    return val  }  target[key] = val  return val}export function del(target, key) {  if (Array.isArray(target)) {    target.splice(key, 1)    return  }  delete target[key]}export * from 'vue'export {  Vue,  Vue2,  isVue2,  isVue3,  install,}
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