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Martin Brennan 002c676344 DEV: Topic tracking state improvements (#12958) ... Original PR which had to be reverted **https://github.com/discourse/discourse/pull/12555**. See the description there for what this PR is achieving, plus below. The issue with the original PR is addressed in 92ef54f402 If you went to the `x unread` link for a tag Chrome would freeze up and possibly crash, or eventually unfreeze after nearly 10 mins. Other routes for unread/new were similarly slow. From profiling the issue was the `sync` function of `topic-tracking-state.js`, which calls down to `isNew` which in turn calls `moment`, a change I had made in the PR above. The time it takes locally with ~1400 topics in the tracking state is 2.3 seconds. To solve this issue, I have moved these calculations for "created in new period" and "unread not too old" into the tracking state serializer. When I was looking at the profiler I also noticed this issue which was just compounding the problem. Every time we modify topic tracking state we recalculate the sidebar tracking/everything/tag counts. However this calls `forEachTracked` and `countTags` which can be quite expensive as they go through the whole tracking state (and were also calling the removed moment functions). I added some logs and this was being called 30 times when navigating to a new /unread route because `sync` is being called from `build-topic-route` (one for each topic loaded due to pagination). So I just added a debounce here and it makes things even faster. Finally, I changed topic tracking state to use a Map so our counts of the state keys is faster (Maps have .size whereas objects you have to do Object.keys(obj) which is O(n).)		2021-05-31 09:22:28 +10:00
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assets	DEV: Topic tracking state improvements (#12958)	2021-05-31 09:22:28 +10:00
controllers	DEV: Topic tracking state improvements (#12958)	2021-05-31 09:22:28 +10:00
helpers	FEATURE: Normalize the service worker route (#12343)	2021-05-25 19:39:31 -03:00
jobs	FEATURE: Show stale reviewable to other clients (#13114)	2021-05-26 09:47:35 +10:00
mailers	FEATURE: Improve group email settings UI (#13083)	2021-05-28 09:28:18 +10:00
models	DEV: Topic tracking state improvements (#12958)	2021-05-31 09:22:28 +10:00
serializers	DEV: Topic tracking state improvements (#12958)	2021-05-31 09:22:28 +10:00
services	FEATURE: Improve group email settings UI (#13083)	2021-05-28 09:28:18 +10:00
views	DEV: Do not prompt to run yarn in dev env (#13167)	2021-05-26 22:16:28 -04:00