vue如何全局引用公共js vue引用public的js文件

export default {
    text(){
        console.log("测试，测试！！！")
    }
}

import Utils from './common/utils.js';
Vue.prototype.utils=Utils;

  this.utils.text();

import Vue from 'vue'
import CryptoJS from 'crypto-js'

export function encrypt(word, keyStr){//加密
    keyStr = keyStr ? keyStr : 'abcdefgabcdefg12';
    var key  = CryptoJS.enc.Utf8.parse(keyStr);//Latin1 w8m31+Yy/Nw6thPsMpO5fg==
    var srcs = CryptoJS.enc.Utf8.parse(word);
    var encrypted = CryptoJS.AES.encrypt(srcs, key, {mode:CryptoJS.mode.ECB,padding: CryptoJS.pad.Pkcs7});
    return encrypted.toString();
}
export function decrypt(word, keyStr){//解密
    keyStr = keyStr ? keyStr : 'abcdefgabcdefg12';
    var key  = CryptoJS.enc.Utf8.parse(keyStr);//Latin1 w8m31+Yy/Nw6thPsMpO5fg==
    var decrypt = CryptoJS.AES.decrypt(word, key, {mode:CryptoJS.mode.ECB,padding: CryptoJS.pad.Pkcs7});
    return CryptoJS.enc.Utf8.stringify(decrypt).toString();
}

import Utils from './common/utils.js';
Vue.prototype.$encrypt=encrypt;
Vue.prototype.$decrypt=decrypt;

this.$encrypt("欢迎登录","siR6WLQ9pPE0738Y");
var aa=this.$encrypt("欢迎登录","siR6WLQ9pPE0738Y");
this.$decrypt(aa,"siR6WLQ9pPE0738Y");