Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | 42x 48x 122x 122x 122x 35x | import { isValid, parse } from 'date-fns';
/**
* Returns a parsed date or undefined if a parse error occurs or the date is invalid
* @param {string} maybeDatestring a date string in the following formats:
* - YYYY-MM-DD
* - YYYY-MM-DDTHH:mm:ss
* - YYYY-MM-DDTHH:mm:ssZ
* - YYYY-MM-DDTHH:mm:ss±HH:mm
*
* We don't accept any other [valid, but insane ISO datestring](https://bsky.app/profile/gwen.works/post/3ljvdiur2lc2s)
*/
export function parseISOSafe(maybeDatestring) {
return tryParse(
maybeDatestring,
'yyyy-MM-dd',
"yyyy-MM-dd'T'HH:mm:ss",
"yyyy-MM-dd'T'HH:mm:ssXXX"
);
}
if (import.meta.vitest) {
const { test, expect, describe } = import.meta.vitest;
describe('parseISOSafe', () => {
test('works on sane ISO 8601 datestrings', () => {
expect(parseISOSafe('2023-10-01')).toBeInstanceOf(Date);
expect(parseISOSafe('2023-10-01T12:00:00')).toBeInstanceOf(Date);
expect(parseISOSafe('2023-10-01T12:00:00Z')).toBeInstanceOf(Date);
expect(parseISOSafe('2023-10-01T12:00:00+02:00')).toBeInstanceOf(Date);
});
test('does not parse "61"', () => {
// Crazy right??
expect(parseISOSafe('61')).toBeUndefined();
});
});
}
/**
* Returns a parsed date or undefined if a parse error occurs or the date is invalid,
* trying the given formats in order
* @param {string} maybeDatestring
* @param {...string} formats
* @returns {Date|undefined}
*/
function tryParse(maybeDatestring, ...formats) {
for (const format of formats) {
try {
const date = parse(maybeDatestring, format, new Date());
if (isValid(date)) return date;
} catch {
continue;
}
}
return undefined;
}
if (import.meta.vitest) {
const { test, expect, describe } = import.meta.vitest;
describe('tryParse', () => {
test('works on valid datestrings', () => {
expect(tryParse('2023-10-01', 'yyyy-MM-dd')).toBeInstanceOf(Date);
expect(tryParse('2023-10-01T12:00:00', "yyyy-MM-dd'T'HH:mm:ss")).toBeInstanceOf(Date);
expect(tryParse('2023-10-01T12:00:00Z', "yyyy-MM-dd'T'HH:mm:ssXXX")).toBeInstanceOf(
Date
);
});
test('returns undefined for Invalid Date datestrings', () => {
expect(tryParse('2019-05-09T08:25:22+0000')).toBeUndefined();
});
test('returns undefined for malformed datestrings', () => {
expect(tryParse('2023_10-01', 'yyyy-MM-dd')).toBeUndefined();
expect(tryParse('chicken jockey')).toBeUndefined();
});
});
}
|