HackMyResume/src/core/fluent-date.js

96 lines
2.9 KiB
JavaScript

/*
* decaffeinate suggestions:
* DS102: Remove unnecessary code created because of implicit returns
* DS104: Avoid inline assignments
* DS207: Consider shorter variations of null checks
* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
*/
/**
The HackMyResume date representation.
@license MIT. See LICENSE.md for details.
@module core/fluent-date
*/
const moment = require('moment');
require('../utils/string');
/**
Create a FluentDate from a string or Moment date object. There are a few date
formats to be aware of here.
1. The words "Present" and "Now", referring to the current date
2. The default "YYYY-MM-DD" format used in JSON Resume ("2015-02-10")
3. Year-and-month only ("2015-04")
4. Year-only "YYYY" ("2015")
5. The friendly HackMyResume "mmm YYYY" format ("Mar 2015" or "Dec 2008")
6. Empty dates ("", " ")
7. Any other date format that Moment.js can parse from
Note: Moment can transparently parse all or most of these, without requiring us
to specify a date format...but for maximum parsing safety and to avoid Moment
deprecation warnings, it's recommended to either a) explicitly specify the date
format or b) use an ISO format. For clarity, we handle these cases explicitly.
@class FluentDate
*/
class FluentDate {
constructor(dt) {
this.rep = this.fmt(dt);
}
static isCurrent(dt) {
return !dt || (String.is(dt) && /^(present|now|current)$/.test(dt));
}
}
const months = {};
const abbr = {};
moment.months().forEach((m,idx) => months[m.toLowerCase()] = idx+1);
moment.monthsShort().forEach((m,idx) => abbr[m.toLowerCase()]=idx+1);
abbr.sept = 9;
module.exports = FluentDate;
FluentDate.fmt = function( dt, throws ) {
throws = ((throws === undefined) || (throws === null)) || throws;
if ((typeof dt === 'string') || dt instanceof String) {
dt = dt.toLowerCase().trim();
if (/^(present|now|current)$/.test(dt)) { // "Present", "Now"
return moment();
} else if (/^\D+\s+\d{4}$/.test(dt)) { // "Mar 2015"
let left;
const parts = dt.split(' ');
const month = (months[parts[0]] || abbr[parts[0]]);
const temp = parts[1] + '-' + ((left = month < 10) != null ? left : `0${{month : month.toString()}}`);
return moment(temp, 'YYYY-MM');
} else if (/^\d{4}-\d{1,2}$/.test(dt)) { // "2015-03", "1998-4"
return moment(dt, 'YYYY-MM');
} else if (/^\s*\d{4}\s*$/.test(dt)) { // "2015"
return moment(dt, 'YYYY');
} else if (/^\s*$/.test(dt)) { // "", " "
return moment();
} else {
const mt = moment(dt);
if (mt.isValid()) {
return mt;
}
if (throws) {
throw 'Invalid date format encountered.';
}
return null;
}
} else {
if (!dt) {
return moment();
} else if (dt.isValid && dt.isValid()) {
return dt;
}
if (throws) {
throw 'Unknown date object encountered.';
}
return null;
}
};