* ✨ Cache the transit reader when decoding strings
On the cljs side, we create a new transit reader on every call to decode-str.
This turns out to have a fair bit overhead in both transit-cljs and transit-js,
since it has to merge the handlers, call clj->js, allocate a new ReadCache,
etc.
By reusing it the measured decode time goes from ~58us -> ~41us, so about 1.4x
faster. This particularly helps for some operations like whenever a component
is edited and every object needs to be decoded, see
https://github.com/penpot/penpot/issues/9344, although they could probably be
made more efficient in other ways.
The reader usually clears its read cache after a successful read, but whenever
it throws it hangs around. So in this case we need to reset the cache
ourselves, otherwise the next read will be from a clobbered cache.
The tests were written by Claude Sonnet 5.5, and should cover the clobbering
behaviour above.
Signed-off-by: Luke Lau <luke@igalia.com>
* Keep one transit reader per type and rebuild it on add-handlers!
---------
Signed-off-by: Luke Lau <luke@igalia.com>
Co-authored-by: Andrey Antukh <niwi@niwi.nz>
