my mock makers

makers.js

    <script>
        var app = new Vue({
            el: '#app',
            data(){
                return {
                    markers: [],
                    MID: 0,
                    currentInfoWindow: null,
                    options : {timeout: 10000, enableHighAccuracy: true},
                }
            },
            methods: {
                methods: {
                getMarkers: mockasync(getAPI),

                getAPI:function(){
                    return[  
                        {
                        ...
                        },
                        {...
                        },
                        ]
                },
                
                mockasync:function(){
                    function mocked(){
                        var res = f.apply(this, arguments);
                        return new Promise(function(resolve, reject){
                            window.setTimeout(function(){
                                resolve({data: res});
                            }, 500);
                        });
                    }
                    return mocked;
                },

                reverseMessage: function () {
                    this.message = this.message.split('').reverse().join('')
                }
            },
           
            mounted(){
             
                function loadMarkers(lat, lng, km){
                    
                    this.getMakers(lat, lng, km).then(function(result){ /* << == Esse está lá no methods ...*/
                    var records = result;
            
                    for (var i = 0; i < records.length; i++) {
                        var record = records[i];  
                    }
                 }
            }
        });
    </script>