Vue filters migration from vue 1 to vue 2

I have problem with migratiing filters from vue 1 to vue 2, I created exactly what I need here (highlighting text which match the input text):

Vue.component('demo-grid', {
  template: '#grid-template',
  props: {
    filterKey: String
  },
  data: function () {
    return {
     searchParams: [
     { key: '' }
     ],
      suggestions: [
        { message: 'Foo' },
        { message: 'Bar' },
        { message: 'Foobar' },
        { message: 'pikachu' },
        { message: 'raichu' }
      ]
    }
  },
  filters: {
    highlight: function(words, query){
        var iQuery = new RegExp(query, "ig");
        return words.replace(iQuery, function(matchedTxt,a,b){
            return ('<span class=\'highlight\'>' + matchedTxt + '</span>');
        });
    }
  }
})


// bootstrap the demo
var demo = new Vue({
  el: '#demo'
})

https://jsfiddle.net/t5ac1quc/23/ VUE-1 resource
https://jsfiddle.net/t5ac1quc/25/ VUE-2 resource

I would be very grateful, for all the answers