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@edhaase
Last active August 29, 2015 14:24
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/**
* @module TimeStamp
* @todo Unit tests
*/
'use strict';
var moment = require('moment');
/**
* @class
* @param {TimeStamp|string} [src] - A timestamp to parse
*/
function TimeStamp(src) {
if ( !(this instanceof TimeStamp) )
throw new Error('Requires use of "new" keyword');
this.time = moment.utc();
/* copy constructor? */
if(src && src instanceof TimeStamp)
this.time = src.time;
else
this.time = moment.utc(src);
Object.seal(this);
};
/**
* @returns String representation of TimeStamp in ISO 8601
*/
TimeStamp.prototype.toString = function TimeStampFormatter() {
return this.time.toISOString();
}
/** Updates timestamp to current time.
* @returns This for chaining.
*/
TimeStamp.prototype.update = function() {
this.time = moment.utc();
return this;
}
/**
* @returns Age of timestamp
*/
TimeStamp.prototype.age = function() {
return moment.duration(this.time.diff(moment()));
}
/**
* @returns Age of timestamp in seconds
*/
TimeStamp.prototype.ageInSeconds = function() {
return Math.abs( this.age().asSeconds() );
}
// TimeStamp.prototype.valueOf
module.exports = TimeStamp;
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