perf: don't add unload event listener #18082
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kt3k
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Mar 10, 2023
This commit changes how "unload" event is handled - before this commit an event listener was added unconditionally in the runtime bootstrapping function, which for some reason was very expensive (0.3ms). Instead of adding an event listener, a check was added to "dispatchEvent" function that performs the same action (so it's only called if there's an event dispatched).
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This commit changes how "unload" event is handled - before
this commit an event listener was added unconditionally in
the runtime bootstrapping function, which for some reason was
very expensive (0.3ms). Instead of adding an event listener,
a check was added to "dispatchEvent" function that performs
the same action (so it's only called if there's an event dispatched).