blob: af3ca7144008fec9a8a491fadc1d660a6e1be857 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
import { createDateTimeFormat } from '../../locale';
let dateTimeFormats;
export const initDateFormats = () => {
const dayFormat = createDateTimeFormat({ month: 'short', day: 'numeric' });
const monthFormat = createDateTimeFormat({ month: 'long' });
const yearFormat = createDateTimeFormat({ year: 'numeric' });
dateTimeFormats = {
dayFormat,
monthFormat,
yearFormat,
};
};
initDateFormats();
/**
Formats a localized date in way that it can be used for d3.js axis.tickFormat().
That is, it displays
- 4-digit for first of January
- full month name for first of every month
- day and abbreviated month otherwise
see also https://github.com/d3/d3-3.x-api-reference/blob/master/SVG-Axes.md#tickFormat
*/
export const dateTickFormat = date => {
if (date.getDate() !== 1) {
return dateTimeFormats.dayFormat.format(date);
}
if (date.getMonth() > 0) {
return dateTimeFormats.monthFormat.format(date);
}
return dateTimeFormats.yearFormat.format(date);
};
|
