This is my odoo12 javascript code for timer widget i want to use that widget for odoo16 aswell but i am getting an that i am unable to run that code can anybody guide me that what should i do run this code in Odoo16 as well. 
I have a float type field that i want to use that widget on that field.

odoo.define('employee_tracking.timer', function (require) {
"use strict";
var AbstractField = require('web.AbstractField');
var core = require('web.core');
var field_registry = require('web.field_registry');
var time = require('web.time');
var FieldManagerMixin = require('web.FieldManagerMixin');
var _t = core._t;
var TimeCounter  = AbstractField.extend({
        willStart: function () {
        var self = this;
        if(this.model=='emp_track.project'){
            var my_domain = [['emp_task_id', '=', this.res_id]]
        }
       if(this.model=='qa_track.project'){
            var my_domain = [['qa_task_id', '=', this.res_id]]
        }
        var def = this._rpc({
            model: 'account.analytic.line',
            method: 'search_read',
            domain:  my_domain,
        }).then(function (result) {
            if (self.mode === 'readonly') {
                var currentDate = new Date();
                self.duration = 0;
                _.each(result, function (data) {
                    self.duration += data.date_end ?
                        self._getDateDifference(data.date_start, data.date_end) :
                        self._getDateDifference(time.auto_str_to_date(data.date_start), currentDate);
                });
            }
        });
        return $.when(this._super.apply(this, arguments), def);
    },
    destroy: function () {
        this._super.apply(this, arguments);
        clearInterval(this.timer);
    },
    isSet: function () {
        return true;
    },
    _getDateDifference: function (dateStart, dateEnd) {
        return moment(dateEnd).diff(moment(dateStart));
    },
    _render: function () {
        this._startTimeCounter();
    },
    _startTimeCounter: function () {
        var self = this;
        clearInterval(this.timer);
        if (this.record.data.is_user_working) {
            this.timer = setTimeout(function () {
                self.duration += 1000;
                self._startTimeCounter();
            }, 1000);
        } else {
            clearInterval(this.timer);
        }
        this.$el.html($('' + moment.utc(this.duration).format("HH:mm:ss") + ''));
    },
});
field_registry.add('timesheet_uoms', TimeCounter);
});