The DOM surveyor will now use time-based logic to spread its work
over time. This allows the surveying to better scale down on
slower devices.
Additionally, the DOM surveyor code has been reworked to lower as
much as possible memory churning when collating nodes to survey.
This rework has been motivated after profiling the "monstrous DOM"
seen in the following page:
<https://doc.rust-lang.org/std/iter/trait.Iterator.html>
The idea is that making the DOM surveyor efficient on such
"monstrous DOM" case should make it efficient everywhere in
practice.
- Avoid concatenating with empty array: though the concatenated
array is empty, this still forces the creation of a whole new
array as per semantic of Array.prototype.concat().
<https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/concat>
- Do not convert arrays to strings when sending data to
main process in surveyPhase1(): I no longer see any benefit
doing so in profiling data (if I recall properly this was
benefiting Firefox, but I can't remember for sure anymore why
I chose to do so back then).
Hopefully this will fix the issue seen on Firefox for Android: for
some reasons, the popup panel's default size is now more zoomed
out than it used to be in latest stable release.
Additionally, I fixed the syntactically incorrect instances of
:before and :after.
Related issue:
- https://github.com/gorhill/uBlock/issues/3683
This commit further increases uBO's procedural cosmetic filters
Adguard's cosmetic filter syntax -- specifically those procedural
cosmetic filters where plain CSS selectors appeared following
a procedural oeprator (this was rejected as invalid by uBO).
Also, experimental support for `:watch-attrs` procedural
operator, as discussed in <https://github.com/uBlockOrigin/uBlock-issues/issues/341#issuecomment-449765525>.
Support may be dropped before next release depending on whether
a better solution is suggested.
Additionally, the usual opportunistic refactoring toward ES6
syntax.
- Make FA icons non-selectable, because of spurious selection
on Firefox for Android when merely tapping an icon
- Disable spellchecking in the static network filter editor
in the logger
Related issue:
- https://github.com/gorhill/uBlock/issues/3708
This was brought into the issue above but I ended up forgotting
about it after I focused mostly on the second issue brought up
in there.
Raymond Hill