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722 lines
24 KiB
722 lines
24 KiB
var moment = require('../module/moment');
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var DateUtil = require('./DateUtil');
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var util = require('../util');
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/**
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* @constructor TimeStep
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* The class TimeStep is an iterator for dates. You provide a start date and an
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* end date. The class itself determines the best scale (step size) based on the
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* provided start Date, end Date, and minimumStep.
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*
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* If minimumStep is provided, the step size is chosen as close as possible
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* to the minimumStep but larger than minimumStep. If minimumStep is not
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* provided, the scale is set to 1 DAY.
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* The minimumStep should correspond with the onscreen size of about 6 characters
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*
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* Alternatively, you can set a scale by hand.
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* After creation, you can initialize the class by executing first(). Then you
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* can iterate from the start date to the end date via next(). You can check if
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* the end date is reached with the function hasNext(). After each step, you can
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* retrieve the current date via getCurrent().
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* The TimeStep has scales ranging from milliseconds, seconds, minutes, hours,
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* days, to years.
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*
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* Version: 1.2
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*
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* @param {Date} [start] The start date, for example new Date(2010, 9, 21)
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* or new Date(2010, 9, 21, 23, 45, 00)
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* @param {Date} [end] The end date
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* @param {Number} [minimumStep] Optional. Minimum step size in milliseconds
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*/
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function TimeStep(start, end, minimumStep, hiddenDates) {
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this.moment = moment;
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// variables
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this.current = this.moment();
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this._start = this.moment();
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this._end = this.moment();
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this.autoScale = true;
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this.scale = 'day';
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this.step = 1;
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// initialize the range
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this.setRange(start, end, minimumStep);
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// hidden Dates options
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this.switchedDay = false;
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this.switchedMonth = false;
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this.switchedYear = false;
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if (Array.isArray(hiddenDates)) {
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this.hiddenDates = hiddenDates;
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}
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else if (hiddenDates != undefined) {
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this.hiddenDates = [hiddenDates];
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}
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else {
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this.hiddenDates = [];
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}
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this.format = TimeStep.FORMAT; // default formatting
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}
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// Time formatting
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TimeStep.FORMAT = {
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minorLabels: {
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millisecond:'SSS',
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second: 's',
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minute: 'HH:mm',
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hour: 'HH:mm',
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weekday: 'ddd D',
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day: 'D',
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week: 'w',
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month: 'MMM',
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year: 'YYYY'
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},
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majorLabels: {
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millisecond:'HH:mm:ss',
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second: 'D MMMM HH:mm',
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minute: 'ddd D MMMM',
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hour: 'ddd D MMMM',
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weekday: 'MMMM YYYY',
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day: 'MMMM YYYY',
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week: 'MMMM YYYY',
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month: 'YYYY',
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year: ''
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}
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};
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/**
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* Set custom constructor function for moment. Can be used to set dates
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* to UTC or to set a utcOffset.
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* @param {function} moment
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*/
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TimeStep.prototype.setMoment = function (moment) {
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this.moment = moment;
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// update the date properties, can have a new utcOffset
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this.current = this.moment(this.current.valueOf());
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this._start = this.moment(this._start.valueOf());
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this._end = this.moment(this._end.valueOf());
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};
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/**
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* Set custom formatting for the minor an major labels of the TimeStep.
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* Both `minorLabels` and `majorLabels` are an Object with properties:
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* 'millisecond', 'second', 'minute', 'hour', 'weekday', 'day', 'week', 'month', 'year'.
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* @param {{minorLabels: Object, majorLabels: Object}} format
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*/
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TimeStep.prototype.setFormat = function (format) {
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var defaultFormat = util.deepExtend({}, TimeStep.FORMAT);
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this.format = util.deepExtend(defaultFormat, format);
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};
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/**
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* Set a new range
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* If minimumStep is provided, the step size is chosen as close as possible
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* to the minimumStep but larger than minimumStep. If minimumStep is not
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* provided, the scale is set to 1 DAY.
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* The minimumStep should correspond with the onscreen size of about 6 characters
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* @param {Date} [start] The start date and time.
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* @param {Date} [end] The end date and time.
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* @param {int} [minimumStep] Optional. Minimum step size in milliseconds
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*/
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TimeStep.prototype.setRange = function(start, end, minimumStep) {
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if (!(start instanceof Date) || !(end instanceof Date)) {
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throw "No legal start or end date in method setRange";
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}
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this._start = (start != undefined) ? this.moment(start.valueOf()) : new Date();
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this._end = (end != undefined) ? this.moment(end.valueOf()) : new Date();
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if (this.autoScale) {
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this.setMinimumStep(minimumStep);
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}
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};
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/**
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* Set the range iterator to the start date.
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*/
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TimeStep.prototype.start = function() {
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this.current = this._start.clone();
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this.roundToMinor();
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};
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/**
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* Round the current date to the first minor date value
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* This must be executed once when the current date is set to start Date
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*/
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TimeStep.prototype.roundToMinor = function() {
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// round to floor
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// to prevent year & month scales rounding down to the first day of week we perform this separately
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if (this.scale == 'week') {
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this.current.weekday(0);
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}
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// IMPORTANT: we have no breaks in this switch! (this is no bug)
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// noinspection FallThroughInSwitchStatementJS
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switch (this.scale) {
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case 'year':
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this.current.year(this.step * Math.floor(this.current.year() / this.step));
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this.current.month(0);
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case 'month': this.current.date(1); // eslint-disable-line no-fallthrough
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case 'week': // eslint-disable-line no-fallthrough
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case 'day': // eslint-disable-line no-fallthrough
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case 'weekday': this.current.hours(0); // eslint-disable-line no-fallthrough
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case 'hour': this.current.minutes(0); // eslint-disable-line no-fallthrough
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case 'minute': this.current.seconds(0); // eslint-disable-line no-fallthrough
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case 'second': this.current.milliseconds(0); // eslint-disable-line no-fallthrough
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//case 'millisecond': // nothing to do for milliseconds
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}
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if (this.step != 1) {
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// round down to the first minor value that is a multiple of the current step size
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switch (this.scale) {
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case 'millisecond': this.current.subtract(this.current.milliseconds() % this.step, 'milliseconds'); break;
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case 'second': this.current.subtract(this.current.seconds() % this.step, 'seconds'); break;
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case 'minute': this.current.subtract(this.current.minutes() % this.step, 'minutes'); break;
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case 'hour': this.current.subtract(this.current.hours() % this.step, 'hours'); break;
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case 'weekday': // intentional fall through
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case 'day': this.current.subtract((this.current.date() - 1) % this.step, 'day'); break;
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case 'week': this.current.subtract(this.current.week() % this.step, 'week'); break;
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case 'month': this.current.subtract(this.current.month() % this.step, 'month'); break;
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case 'year': this.current.subtract(this.current.year() % this.step, 'year'); break;
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default: break;
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}
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}
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};
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/**
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* Check if the there is a next step
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* @return {boolean} true if the current date has not passed the end date
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*/
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TimeStep.prototype.hasNext = function () {
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return (this.current.valueOf() <= this._end.valueOf());
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};
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/**
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* Do the next step
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*/
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TimeStep.prototype.next = function() {
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var prev = this.current.valueOf();
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// Two cases, needed to prevent issues with switching daylight savings
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// (end of March and end of October)
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switch (this.scale) {
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case 'millisecond': this.current.add(this.step, 'millisecond'); break;
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case 'second': this.current.add(this.step, 'second'); break;
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case 'minute': this.current.add(this.step, 'minute'); break;
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case 'hour':
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this.current.add(this.step, 'hour');
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if (this.current.month() < 6) {
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this.current.subtract(this.current.hours() % this.step, 'hour');
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} else {
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if (this.current.hours() % this.step !== 0) {
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this.current.add(this.step - this.current.hours() % this.step, 'hour');
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}
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}
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break;
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case 'weekday': // intentional fall through
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case 'day': this.current.add(this.step, 'day'); break;
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case 'week':
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if (this.current.weekday() !== 0){ // we had a month break not correlating with a week's start before
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this.current.weekday(0); // switch back to week cycles
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this.current.add(this.step, 'week');
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} else { // first day of the week
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var nextWeek = this.current.clone();
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nextWeek.add(1, 'week');
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if(nextWeek.isSame(this.current, 'month')){ // is the first day of the next week in the same month?
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this.current.add(this.step, 'week'); // the default case
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} else { // inject a step at each first day of the month
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this.current.add(this.step, 'week');
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this.current.date(1);
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}
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}
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break;
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case 'month': this.current.add(this.step, 'month'); break;
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case 'year': this.current.add(this.step, 'year'); break;
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default: break;
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}
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if (this.step != 1) {
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// round down to the correct major value
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switch (this.scale) {
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case 'millisecond': if(this.current.milliseconds() > 0 && this.current.milliseconds() < this.step) this.current.milliseconds(0); break;
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case 'second': if(this.current.seconds() > 0 && this.current.seconds() < this.step) this.current.seconds(0); break;
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case 'minute': if(this.current.minutes() > 0 && this.current.minutes() < this.step) this.current.minutes(0); break;
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case 'hour': if(this.current.hours() > 0 && this.current.hours() < this.step) this.current.hours(0); break;
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case 'weekday': // intentional fall through
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case 'day': if(this.current.date() < this.step+1) this.current.date(1); break;
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case 'week': if(this.current.week() < this.step) this.current.week(1); break; // week numbering starts at 1, not 0
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case 'month': if(this.current.month() < this.step) this.current.month(0); break;
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case 'year': break; // nothing to do for year
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default: break;
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}
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}
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// safety mechanism: if current time is still unchanged, move to the end
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if (this.current.valueOf() == prev) {
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this.current = this._end.clone();
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}
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// Reset switches for year, month and day. Will get set to true where appropriate in DateUtil.stepOverHiddenDates
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this.switchedDay = false;
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this.switchedMonth = false;
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this.switchedYear = false;
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DateUtil.stepOverHiddenDates(this.moment, this, prev);
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};
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/**
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* Get the current datetime
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* @return {Moment} current The current date
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*/
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TimeStep.prototype.getCurrent = function() {
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return this.current;
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};
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/**
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* Set a custom scale. Autoscaling will be disabled.
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* For example setScale('minute', 5) will result
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* in minor steps of 5 minutes, and major steps of an hour.
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*
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* @param {{scale: string, step: number}} params
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* An object containing two properties:
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* - A string 'scale'. Choose from 'millisecond', 'second',
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* 'minute', 'hour', 'weekday', 'day', 'week', 'month', 'year'.
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* - A number 'step'. A step size, by default 1.
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* Choose for example 1, 2, 5, or 10.
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*/
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TimeStep.prototype.setScale = function(params) {
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if (params && typeof params.scale == 'string') {
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this.scale = params.scale;
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this.step = params.step > 0 ? params.step : 1;
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this.autoScale = false;
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}
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};
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/**
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* Enable or disable autoscaling
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* @param {boolean} enable If true, autoascaling is set true
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*/
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TimeStep.prototype.setAutoScale = function (enable) {
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this.autoScale = enable;
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};
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/**
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* Automatically determine the scale that bests fits the provided minimum step
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* @param {Number} [minimumStep] The minimum step size in milliseconds
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*/
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TimeStep.prototype.setMinimumStep = function(minimumStep) {
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if (minimumStep == undefined) {
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return;
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}
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//var b = asc + ds;
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var stepYear = (1000 * 60 * 60 * 24 * 30 * 12);
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var stepMonth = (1000 * 60 * 60 * 24 * 30);
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var stepDay = (1000 * 60 * 60 * 24);
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var stepHour = (1000 * 60 * 60);
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var stepMinute = (1000 * 60);
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var stepSecond = (1000);
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var stepMillisecond= (1);
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// find the smallest step that is larger than the provided minimumStep
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if (stepYear*1000 > minimumStep) {this.scale = 'year'; this.step = 1000;}
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if (stepYear*500 > minimumStep) {this.scale = 'year'; this.step = 500;}
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if (stepYear*100 > minimumStep) {this.scale = 'year'; this.step = 100;}
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if (stepYear*50 > minimumStep) {this.scale = 'year'; this.step = 50;}
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if (stepYear*10 > minimumStep) {this.scale = 'year'; this.step = 10;}
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if (stepYear*5 > minimumStep) {this.scale = 'year'; this.step = 5;}
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if (stepYear > minimumStep) {this.scale = 'year'; this.step = 1;}
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if (stepMonth*3 > minimumStep) {this.scale = 'month'; this.step = 3;}
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if (stepMonth > minimumStep) {this.scale = 'month'; this.step = 1;}
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if (stepDay*5 > minimumStep) {this.scale = 'day'; this.step = 5;}
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if (stepDay*2 > minimumStep) {this.scale = 'day'; this.step = 2;}
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if (stepDay > minimumStep) {this.scale = 'day'; this.step = 1;}
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if (stepDay/2 > minimumStep) {this.scale = 'weekday'; this.step = 1;}
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if (stepHour*4 > minimumStep) {this.scale = 'hour'; this.step = 4;}
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if (stepHour > minimumStep) {this.scale = 'hour'; this.step = 1;}
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if (stepMinute*15 > minimumStep) {this.scale = 'minute'; this.step = 15;}
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if (stepMinute*10 > minimumStep) {this.scale = 'minute'; this.step = 10;}
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if (stepMinute*5 > minimumStep) {this.scale = 'minute'; this.step = 5;}
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if (stepMinute > minimumStep) {this.scale = 'minute'; this.step = 1;}
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if (stepSecond*15 > minimumStep) {this.scale = 'second'; this.step = 15;}
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if (stepSecond*10 > minimumStep) {this.scale = 'second'; this.step = 10;}
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if (stepSecond*5 > minimumStep) {this.scale = 'second'; this.step = 5;}
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if (stepSecond > minimumStep) {this.scale = 'second'; this.step = 1;}
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if (stepMillisecond*200 > minimumStep) {this.scale = 'millisecond'; this.step = 200;}
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if (stepMillisecond*100 > minimumStep) {this.scale = 'millisecond'; this.step = 100;}
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if (stepMillisecond*50 > minimumStep) {this.scale = 'millisecond'; this.step = 50;}
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if (stepMillisecond*10 > minimumStep) {this.scale = 'millisecond'; this.step = 10;}
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if (stepMillisecond*5 > minimumStep) {this.scale = 'millisecond'; this.step = 5;}
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if (stepMillisecond > minimumStep) {this.scale = 'millisecond'; this.step = 1;}
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};
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/**
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* Snap a date to a rounded value.
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* The snap intervals are dependent on the current scale and step.
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* Static function
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* @param {Date} date the date to be snapped.
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* @param {string} scale Current scale, can be 'millisecond', 'second',
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* 'minute', 'hour', 'weekday, 'day', 'week', 'month', 'year'.
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* @param {number} step Current step (1, 2, 4, 5, ...
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* @return {Date} snappedDate
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*/
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TimeStep.snap = function(date, scale, step) {
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var clone = moment(date);
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if (scale == 'year') {
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var year = clone.year() + Math.round(clone.month() / 12);
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clone.year(Math.round(year / step) * step);
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clone.month(0);
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clone.date(0);
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clone.hours(0);
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clone.minutes(0);
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clone.seconds(0);
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clone.milliseconds(0);
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}
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else if (scale == 'month') {
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if (clone.date() > 15) {
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clone.date(1);
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clone.add(1, 'month');
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// important: first set Date to 1, after that change the month.
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}
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else {
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clone.date(1);
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}
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clone.hours(0);
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clone.minutes(0);
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clone.seconds(0);
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clone.milliseconds(0);
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}
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else if (scale == 'week') {
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if (clone.weekday() > 2) { // doing it the momentjs locale aware way
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clone.weekday(0);
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clone.add(1, 'week');
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}
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else {
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clone.weekday(0);
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}
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clone.hours(0);
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clone.minutes(0);
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clone.seconds(0);
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clone.milliseconds(0);
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}
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else if (scale == 'day') {
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//noinspection FallthroughInSwitchStatementJS
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switch (step) {
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case 5:
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case 2:
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clone.hours(Math.round(clone.hours() / 24) * 24); break;
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default:
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clone.hours(Math.round(clone.hours() / 12) * 12); break;
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}
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clone.minutes(0);
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clone.seconds(0);
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clone.milliseconds(0);
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}
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else if (scale == 'weekday') {
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//noinspection FallthroughInSwitchStatementJS
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switch (step) {
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case 5:
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case 2:
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clone.hours(Math.round(clone.hours() / 12) * 12); break;
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default:
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clone.hours(Math.round(clone.hours() / 6) * 6); break;
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}
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clone.minutes(0);
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clone.seconds(0);
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clone.milliseconds(0);
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}
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else if (scale == 'hour') {
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switch (step) {
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case 4:
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clone.minutes(Math.round(clone.minutes() / 60) * 60); break;
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default:
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clone.minutes(Math.round(clone.minutes() / 30) * 30); break;
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}
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clone.seconds(0);
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clone.milliseconds(0);
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} else if (scale == 'minute') {
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//noinspection FallthroughInSwitchStatementJS
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switch (step) {
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case 15:
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case 10:
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clone.minutes(Math.round(clone.minutes() / 5) * 5);
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clone.seconds(0);
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break;
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case 5:
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clone.seconds(Math.round(clone.seconds() / 60) * 60); break;
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default:
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clone.seconds(Math.round(clone.seconds() / 30) * 30); break;
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}
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clone.milliseconds(0);
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}
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else if (scale == 'second') {
|
|
//noinspection FallthroughInSwitchStatementJS
|
|
switch (step) {
|
|
case 15:
|
|
case 10:
|
|
clone.seconds(Math.round(clone.seconds() / 5) * 5);
|
|
clone.milliseconds(0);
|
|
break;
|
|
case 5:
|
|
clone.milliseconds(Math.round(clone.milliseconds() / 1000) * 1000); break;
|
|
default:
|
|
clone.milliseconds(Math.round(clone.milliseconds() / 500) * 500); break;
|
|
}
|
|
}
|
|
else if (scale == 'millisecond') {
|
|
var _step = step > 5 ? step / 2 : 1;
|
|
clone.milliseconds(Math.round(clone.milliseconds() / _step) * _step);
|
|
}
|
|
|
|
return clone;
|
|
};
|
|
|
|
/**
|
|
* Check if the current value is a major value (for example when the step
|
|
* is DAY, a major value is each first day of the MONTH)
|
|
* @return {boolean} true if current date is major, else false.
|
|
*/
|
|
TimeStep.prototype.isMajor = function() {
|
|
if (this.switchedYear == true) {
|
|
switch (this.scale) {
|
|
case 'year':
|
|
case 'month':
|
|
case 'week':
|
|
case 'weekday':
|
|
case 'day':
|
|
case 'hour':
|
|
case 'minute':
|
|
case 'second':
|
|
case 'millisecond':
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
else if (this.switchedMonth == true) {
|
|
switch (this.scale) {
|
|
case 'week':
|
|
case 'weekday':
|
|
case 'day':
|
|
case 'hour':
|
|
case 'minute':
|
|
case 'second':
|
|
case 'millisecond':
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
else if (this.switchedDay == true) {
|
|
switch (this.scale) {
|
|
case 'millisecond':
|
|
case 'second':
|
|
case 'minute':
|
|
case 'hour':
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
var date = this.moment(this.current);
|
|
switch (this.scale) {
|
|
case 'millisecond':
|
|
return (date.milliseconds() == 0);
|
|
case 'second':
|
|
return (date.seconds() == 0);
|
|
case 'minute':
|
|
return (date.hours() == 0) && (date.minutes() == 0);
|
|
case 'hour':
|
|
return (date.hours() == 0);
|
|
case 'weekday': // intentional fall through
|
|
case 'day':
|
|
return (date.date() == 1);
|
|
case 'week':
|
|
return (date.date() == 1);
|
|
case 'month':
|
|
return (date.month() == 0);
|
|
case 'year':
|
|
return false;
|
|
default:
|
|
return false;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Returns formatted text for the minor axislabel, depending on the current
|
|
* date and the scale. For example when scale is MINUTE, the current time is
|
|
* formatted as "hh:mm".
|
|
* @param {Date} [date] custom date. if not provided, current date is taken
|
|
*/
|
|
TimeStep.prototype.getLabelMinor = function(date) {
|
|
if (date == undefined) {
|
|
date = this.current;
|
|
}
|
|
if (date instanceof Date) {
|
|
date = this.moment(date)
|
|
}
|
|
|
|
if (typeof(this.format.minorLabels) === "function") {
|
|
return this.format.minorLabels(date, this.scale, this.step);
|
|
}
|
|
|
|
var format = this.format.minorLabels[this.scale];
|
|
// noinspection FallThroughInSwitchStatementJS
|
|
switch (this.scale) {
|
|
case 'week':
|
|
if(this.isMajor() && date.weekday() !== 0){
|
|
return "";
|
|
}
|
|
break;
|
|
default:
|
|
return (format && format.length > 0) ? this.moment(date).format(format) : '';
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Returns formatted text for the major axis label, depending on the current
|
|
* date and the scale. For example when scale is MINUTE, the major scale is
|
|
* hours, and the hour will be formatted as "hh".
|
|
* @param {Date} [date] custom date. if not provided, current date is taken
|
|
*/
|
|
TimeStep.prototype.getLabelMajor = function(date) {
|
|
if (date == undefined) {
|
|
date = this.current;
|
|
}
|
|
if (date instanceof Date) {
|
|
date = this.moment(date)
|
|
}
|
|
|
|
if (typeof(this.format.majorLabels) === "function") {
|
|
return this.format.majorLabels(date, this.scale, this.step);
|
|
}
|
|
|
|
var format = this.format.majorLabels[this.scale];
|
|
return (format && format.length > 0) ? this.moment(date).format(format) : '';
|
|
};
|
|
|
|
TimeStep.prototype.getClassName = function() {
|
|
var _moment = this.moment;
|
|
var m = this.moment(this.current);
|
|
var current = m.locale ? m.locale('en') : m.lang('en'); // old versions of moment have .lang() function
|
|
var step = this.step;
|
|
var classNames = [];
|
|
|
|
/**
|
|
*
|
|
* @param {Number} value
|
|
* @returns {String}
|
|
*/
|
|
function even(value) {
|
|
return (value / step % 2 == 0) ? ' vis-even' : ' vis-odd';
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param {Date} date
|
|
* @returns {String}
|
|
*/
|
|
function today(date) {
|
|
if (date.isSame(new Date(), 'day')) {
|
|
return ' vis-today';
|
|
}
|
|
if (date.isSame(_moment().add(1, 'day'), 'day')) {
|
|
return ' vis-tomorrow';
|
|
}
|
|
if (date.isSame(_moment().add(-1, 'day'), 'day')) {
|
|
return ' vis-yesterday';
|
|
}
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param {Date} date
|
|
* @returns {String}
|
|
*/
|
|
function currentWeek(date) {
|
|
return date.isSame(new Date(), 'week') ? ' vis-current-week' : '';
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param {Date} date
|
|
* @returns {String}
|
|
*/
|
|
function currentMonth(date) {
|
|
return date.isSame(new Date(), 'month') ? ' vis-current-month' : '';
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param {Date} date
|
|
* @returns {String}
|
|
*/
|
|
function currentYear(date) {
|
|
return date.isSame(new Date(), 'year') ? ' vis-current-year' : '';
|
|
}
|
|
|
|
switch (this.scale) {
|
|
case 'millisecond':
|
|
classNames.push(today(current));
|
|
classNames.push(even(current.milliseconds()));
|
|
break;
|
|
case 'second':
|
|
classNames.push(today(current));
|
|
classNames.push(even(current.seconds()));
|
|
break;
|
|
case 'minute':
|
|
classNames.push(today(current));
|
|
classNames.push(even(current.minutes()));
|
|
break;
|
|
case 'hour':
|
|
classNames.push('vis-h' + current.hours() + (this.step == 4 ? '-h' + (current.hours() + 4) : ''));
|
|
classNames.push(today(current));
|
|
classNames.push(even(current.hours()));
|
|
break;
|
|
case 'weekday':
|
|
classNames.push('vis-' + current.format('dddd').toLowerCase());
|
|
classNames.push(today(current));
|
|
classNames.push(currentWeek(current));
|
|
classNames.push(even(current.date()));
|
|
break;
|
|
case 'day':
|
|
classNames.push('vis-day' + current.date());
|
|
classNames.push('vis-' + current.format('MMMM').toLowerCase());
|
|
classNames.push(today(current));
|
|
classNames.push(currentMonth(current));
|
|
classNames.push(this.step <= 2 ? today(current) : '');
|
|
classNames.push(this.step <= 2 ? 'vis-' + current.format('dddd').toLowerCase() : '');
|
|
classNames.push(even(current.date() - 1));
|
|
break;
|
|
case 'week':
|
|
classNames.push('vis-week' + current.format('w'));
|
|
classNames.push(currentWeek(current));
|
|
classNames.push(even(current.week()));
|
|
break;
|
|
case 'month':
|
|
classNames.push('vis-' + current.format('MMMM').toLowerCase());
|
|
classNames.push(currentMonth(current));
|
|
classNames.push(even(current.month()));
|
|
break;
|
|
case 'year':
|
|
classNames.push('vis-year' + current.year());
|
|
classNames.push(currentYear(current));
|
|
classNames.push(even(current.year()));
|
|
break;
|
|
}
|
|
return classNames.filter(String).join(" ");
|
|
};
|
|
|
|
module.exports = TimeStep;
|