Published unlisted
Edited
Sep 6, 2021
re = /^([-+]\d{2})?\d{4}(-\d{2}(-\d{2})?)?(T\d{2}:\d{2}(:\d{2}(.\d{3})?)?(Z|[-+]\d{2}:\d{2})?)?$/
parser = (x) => (re.test(x) ? new Date(x) : new Date(x == null ? NaN : +x))
dates = `
2021-09-06T06:57:38
2021-09-06T06:57:38+00:00
2021-09-06T06:57:38.123+00:00
2021-09-06T06:57:38Z
+012000-09-01
-000100-09-01T02:02
1402
2008
2008-03
2021-09-06
2021T06:57:38Z
`
.split(/\n/)
.filter((d) => d)
tests = dates.map((d) => [
d,
d3.isoParse(d),
parser(d),
+d3.isoParse(d) === +parser(d)
])
tests.every(([, , , x]) => x) ? "👍" : "❌"
["99-02", "12"].map((d) => [d, d3.isoParse(d), parser(d)])
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