How to import js file(s) inside vue component (laravel) [duplicate]

I have a form.js stored in my resource/js/

class Form{
    constructor(){
        //more coding here
    }

    //more coding here
}

My question is how can I import the file above inside my .vue file? I tried these below:

<template>
    //some html here
</template>

<script src="../form.js"></script>
<script>

    export default{
        data(){
            return {
                form: new Form({
                    title: '',
                    body: ''
                })
            }
        }
    }
</script>

But still getting these error:

[Vue warn]: Error in data(): "ReferenceError: Form is not defined"

export default class Form{
   //more coding here
}

import Form from '../form.js';