The current model of l10n_date is relying on mozL10n.get, so we need to update that. We also now have Intl, which should offload some of the tasks. l10n_date provides: 1) localeDateString 2) localeTimeString 3) localeString 4) localeFormat 5) fromNow 6) relativeParts 1) localeDateString function localeDateString(d) { var options = { month: 'numeric', day: 'numeric', year: 'numeric', }; var formatter = new Intl.DateTimeFormat(undefined, options); return formatter.format(d); } 2) localeTimeString function localeTimeString(d) { var options = { hour12: false, hour: 'numeric', minute: 'numeric', second: 'numeric', }; var formatter = new Intl.DateTimeFormat(undefined, options); return formatter.format(d); } 3) localeString function localeString(d) { var options = { hour12: false, weekday: 'short', month: 'short', day: 'numeric', hour: 'numeric', minute: 'numeric', second: 'numeric', year: 'numeric', }; var formatter = new Intl.DateTimeFormat(undefined, options); return formatter.format(d); } 4) localeFormat This is the most tricky. Intl's format works differently from localeFormat. Instead of formatting a string like "Today is %I:%M %p", we ask just for the date, and we describe it using options. I believe that it's better and it will also allow us to remove a lot of entities, but the new use raw Intl and define options only. 5) fromNow will have to be asynchronous because it loads entities 6) relativeParts this one may stay

Uses: 1) localeDateString: 0 2) localeTimeString: 0 3) localeString: 0 4) localeFormat: 146 5) fromNow: 9 6) relativeParts: 1 My take: Remove localeDateString, localeTimeString and localeString now. Next, start porting uses of localeFormat to Intl. p.s. Intl performance characteristic is different than l10n_date. new Intl.DateTimeFormat is costly, format is cheap. in l10n_date new object is cheap, format is costly. So as we are porting, we should make sure to minimize the new Intl.DateTimeFormat creation wherver possible.

Gabriele, you may be interested in this for your work on Callscreen/Communications

Poke for review :)

Comment on attachment 8614602 [details] patch1 Sorry, I thought this was a different, more involved patch and I was afraid to look at it ;) r=me.

Commit: https://github.com/mozilla-b2g/gaia/commit/14e32276025b0310d3e89027320cf4b2a24cedfb

We're down to: 1) localeFormat: 85 2) fromNow: 6

Comment on attachment 8674788 [details] [gaia] zbraniecki:1170963-remove-l10n_date.js > mozilla-b2g:master Final patch to remove l10n_date.js and last lingering calls to it. Stas - I'm asking for an overall review of the change The changes in apps are minimal and trivial, but I'd like owners/peers to rubber stamp them so they know we're removing this file from their apps: Borja - can you review the contacts part? Gabriele - can you review the dialer/emergency call part? Salva - can you review the cost control part? Sam - can you review the FTU part?

Comment on attachment 8674788 [details] [gaia] zbraniecki:1170963-remove-l10n_date.js > mozilla-b2g:master I see `weekStartsOnMonday` is deprecated, [1]. Thanks for the work! [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1127770#c3

Comment on attachment 8674788 [details] [gaia] zbraniecki:1170963-remove-l10n_date.js > mozilla-b2g:master Good to see another legacy dependency go away!

Comment on attachment 8674788 [details] [gaia] zbraniecki:1170963-remove-l10n_date.js > mozilla-b2g:master Yes, yes please. Nice work migrating all the apps to (moz)Intl beforehand; it makes this patch easy to understand! r=me.

Comment on attachment 8674788 [details] [gaia] zbraniecki:1170963-remove-l10n_date.js > mozilla-b2g:master Thanks for the heads-up. Btw do we still need the /shared/js/date_time_helper.js? It appears to provide a window.navigator.mozHour12 shim.

Comment on attachment 8674788 [details] [gaia] zbraniecki:1170963-remove-l10n_date.js > mozilla-b2g:master LGTM, tested on the phone and working perfectly.

Thanks everyone! Commit: https://github.com/zbraniecki/gaia/commit/95638548549acb98a2ab82d3242771f6f7d0e8d4 I'm leaving this bug open until we remove l10n_date from tv_apps - bug 1209866

L10n Date removed: https://github.com/mozilla-b2g/gaia/commit/cc85139ab659fc2dbf0379052991a55c24861468