The environment created by vue-cli cannot determine the type of async function

[maclaren0920]

The following code：
`
mounted() {
let str = Object.getPrototypeOf(this.test1).constructor;
console.log(str); // ƒ Function() { [native code] }
}

methods: {
async test1() {

    }

}

`

[vue-bot]

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