1import { formatMoment } from '../format/format';
2import { hooks } from '../utils/hooks';
3import isFunction from '../utils/is-function';
4
5hooks.defaultFormat = 'YYYY-MM-DDTHH:mm:ssZ';
6hooks.defaultFormatUtc = 'YYYY-MM-DDTHH:mm:ss[Z]';
7
8export function toString() {
9    return this.clone().locale('en').format('ddd MMM DD YYYY HH:mm:ss [GMT]ZZ');
10}
11
12export function toISOString(keepOffset) {
13    if (!this.isValid()) {
14        return null;
15    }
16    var utc = keepOffset !== true,
17        m = utc ? this.clone().utc() : this;
18    if (m.year() < 0 || m.year() > 9999) {
19        return formatMoment(
20            m,
21            utc
22                ? 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]'
23                : 'YYYYYY-MM-DD[T]HH:mm:ss.SSSZ'
24        );
25    }
26    if (isFunction(Date.prototype.toISOString)) {
27        // native implementation is ~50x faster, use it when we can
28        if (utc) {
29            return this.toDate().toISOString();
30        } else {
31            return new Date(this.valueOf() + this.utcOffset() * 60 * 1000)
32                .toISOString()
33                .replace('Z', formatMoment(m, 'Z'));
34        }
35    }
36    return formatMoment(
37        m,
38        utc ? 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]' : 'YYYY-MM-DD[T]HH:mm:ss.SSSZ'
39    );
40}
41
42/**
43 * Return a human readable representation of a moment that can
44 * also be evaluated to get a new moment which is the same
45 *
46 * @link https://nodejs.org/dist/latest/docs/api/util.html#util_custom_inspect_function_on_objects
47 */
48export function inspect() {
49    if (!this.isValid()) {
50        return 'moment.invalid(/* ' + this._i + ' */)';
51    }
52    var func = 'moment',
53        zone = '',
54        prefix,
55        year,
56        datetime,
57        suffix;
58    if (!this.isLocal()) {
59        func = this.utcOffset() === 0 ? 'moment.utc' : 'moment.parseZone';
60        zone = 'Z';
61    }
62    prefix = '[' + func + '("]';
63    year = 0 <= this.year() && this.year() <= 9999 ? 'YYYY' : 'YYYYYY';
64    datetime = '-MM-DD[T]HH:mm:ss.SSS';
65    suffix = zone + '[")]';
66
67    return this.format(prefix + year + datetime + suffix);
68}
69
70export function format(inputString) {
71    if (!inputString) {
72        inputString = this.isUtc()
73            ? hooks.defaultFormatUtc
74            : hooks.defaultFormat;
75    }
76    var output = formatMoment(this, inputString);
77    return this.localeData().postformat(output);
78}