Vue.js Import mixin does not import in app

Question

The requested module './clienteMixin.js' does not provide an export named 'default'

Mixin

export const myMixin = {
    data() {
        return {
            loading: false,
        }
    }
}

Vue App

import myMixin from './clienteMixin.js'

var app = new Vue({
    delimiters: ['[[', ']]'],
    el: '#app',
    components:{},
    mixins: [myMixin],
    data() {
        return {
            
        }
    },
    methods: {
    
    },
    mounted () {
    
    }
});

Answer 1

First change your export to use the default export:

export default {
  data() {
    return {
      loading: false,
    }
  },
}

This will fix the import issue. If you want your mixin to be a global mixin, use Vue.mixin:

import myMixin from './clienteMixin.js'

Vue.mixin(myMixin);

const app = new Vue({
    delimiters: ['[[', ']]'],
    el: '#app',
    components:{},
    data() {
      return {
      }
    },
    methods: {
    },
    mounted () { 
    }
});