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@karfau karfau commented Oct 13, 2024

as part of #550 ("drop redundant and broken Element.appendChild implementation")
the _onUpdateChild was not passed the added child, so the childNodes were "re-indexed" from the firstChild each time a node was appended.
This is why the performance degraded significantly, when there are a lot of childNodes to be appended.

fixes #748

as part of #550
("drop redundant and broken `Element.appendChild` implementation")
the `_onUpdateChild` was not passed the added child,
so the `childNodes` were re-indexed from the `firstChild` each time a node was appended.

Now that the added child is being passed,
the performance in 0.9.0 is still not as good as in 0.8.*,
but this is because of the higher amount of checks being executed before adding a node.

fixes #748
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codecov bot commented Oct 13, 2024

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.05%. Comparing base (8db2ae3) to head (33845ef).
Report is 1 commits behind head on master.

Additional details and impacted files
@@            Coverage Diff             @@
##           master     #760      +/-   ##
==========================================
+ Coverage   95.01%   95.05%   +0.04%     
==========================================
  Files           8        8              
  Lines        2165     2165              
  Branches      569      569              
==========================================
+ Hits         2057     2058       +1     
+ Misses        108      107       -1     

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@karfau karfau added this to the 0.9.4 milestone Oct 13, 2024
@karfau karfau merged commit 5705f5d into master Oct 13, 2024
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@karfau karfau deleted the fix-performance-regression branch October 13, 2024 22:40
karfau added a commit that referenced this pull request Oct 23, 2024
to resolve a regression introduced in #760

fixes #763
karfau added a commit that referenced this pull request Oct 26, 2024
to resolve a regression introduced in #760

fixes #763
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degraded performance of Node.appendChild whith increasing amount of nodes appended

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