Bernt
6de2455917
- Added GLOBAL_MARKETS_TITLE to all translation files - Updated footer with 12 markets (4 active + 8 upcoming) - Translated market section to: zh-cn, zh-tw, ja, ko, th, vi, id, ms, hi - Built and deployed to production - CloudFront invalidation: I3RTMXVFDJXWLG3SYX208OP1CC
29 lines
570 B
JavaScript
29 lines
570 B
JavaScript
var EventEmitter = require('events').EventEmitter
|
|
|
|
function Counter () {
|
|
EventEmitter.call(this)
|
|
this.value = 0
|
|
}
|
|
|
|
Counter.prototype = Object.create(EventEmitter.prototype)
|
|
|
|
Counter.prototype.increment = function increment () {
|
|
this.value++
|
|
}
|
|
|
|
Counter.prototype.decrement = function decrement () {
|
|
if (--this.value === 0) this.emit('zero')
|
|
}
|
|
|
|
Counter.prototype.isZero = function isZero () {
|
|
return (this.value === 0)
|
|
}
|
|
|
|
Counter.prototype.onceZero = function onceZero (fn) {
|
|
if (this.isZero()) return fn()
|
|
|
|
this.once('zero', fn)
|
|
}
|
|
|
|
module.exports = Counter
|