See also https://github.com/tc39-transfer/proposal-date-time-string-format
On Fri, Jun 29, 2018 at 1:01 PM, Richard Gibson <[email protected]> wrote: > TL;DR: https://github.com/gibson042/ecma262-proposal-uniform- > interchange-date-parsing > > A conversation bubbled up on IRC a while back about how implementations > handle unusual Date.parse input, and I've been thinking about it on and off > ever since. It turns out that engines are all over the place for input that > is just a little bit off from the ECMAScript interchange format, even when > such input is valid ISO 8601. > > That rubs me the wrong way, because guaranteeing proper processing for > conforming input but not guaranteeing rejection of nonconforming variations > on it is a half solution. For example, only Edge accepts > "2018-06-28T24:01:01Z" (use of hour 24 for other than end-of-day), only > Safari accepts "2015-06-30T23:59:60Z" (use of 60 for seconds), and only > Chrome accepts "2018-06-29t15:00z" (use of lowercase time designator and > time zone offset). Chrome and Edge accept and transform clearly invalid > out-of-bounds dates like "2018-02-30", and Edge and Safari accept > out-of-bounds time zone offsets like "2018-06-28T15:00-24:00". And Firefox > rejects almost everything not matching the format exactly (although even it > allows partially- or over-specified fractional seconds like > "2018-06-29T11:00:12.3456"). > > To that end, I'd like to standardize Date.parse processing of input that > encompasses the Date Time String Format and its ISO 8601-like > neighborhood—both acceptance of the subset that is valid AND rejection of > the subset that is not. Details are at ecma262-proposal-uniform- > interchange-date-parsing > <https://github.com/gibson042/ecma262-proposal-uniform-interchange-date-parsing>, > and comments are welcome. > > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss > >
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