Various micro optimizations of the component boot flow. #23767
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cramforce
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jridgewell
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src/service.js
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| return top; | ||
| } | ||
| // Make this defined but null to speed up future lookups. | ||
| win.__AMP_TOP = null; |
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We could set this to win instead? Then keep the same ||: win.__AMP_TOP || (win.__AMP_TOP = win)
|
PTAL |
kristoferbaxter
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jridgewell
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Sep 11, 2019
…3767) - Removes unnecessary `hasAttributes` call from `propagateAttributes` - Bundles several `classList.add` operations into one. - Add special case for AMP Doc retrieval that is faster if no shadow doc was ever added which is common. - Makes hot `getTopWindow` function faster by ensuring the property that is rarely defined is at least known.
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hasAttributescall frompropagateAttributesclassList.addoperations into one.getTopWindowfunction faster by ensuring the property that is rarely defined is at least known.