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'use strict' var util = require('util') var TrackerBase = require('./tracker-base.js') var Tracker = module.exports = function (name, todo) { TrackerBase.call(this, name) this.workDone = 0 this.workTodo = todo \|\| 0 } util.inherits(Tracker, TrackerBase) Tracker.prototype.completed = function () { return this.workTodo === 0 ? 0 : this.workDone / this.workTodo } Tracker.prototype.addWork = function (work) { this.workTodo += work this.emit('change', this.name, this.completed(), this) } Tracker.prototype.completeWork = function (work) { this.workDone += work if (this.workDone > this.workTodo) { this.workDone = this.workTodo } this.emit('change', this.name, this.completed(), this) } Tracker.prototype.finish = function () { this.workTodo = this.workDone = 1 this.emit('change', this.name, 1, this) }