Reduce core bundle size in v11#5167
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Size Change: -39 B (-0.25%) Total Size: 15.7 kB 📦 View Changed
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coverage: 98.492%. remained the same — JoviDeCroock/reduce-core-bundle-size into main |
Simplify core control flow and reuse existing constants to reduce the production bundle from 4,857 to 4,814 bytes gzip while preserving behavior.
Keep createElement and cloneElement normalization together and reuse their argument counts. This reduces core from 4,814 to 4,804 bytes gzip without adding runtime work.
Restore the existing isValidElement declaration and remove the obsolete cloneElement re-export module. This leaves core at 4,806 bytes gzip while narrowing source churn.
- Guard the oldChildren lookup with ~_index: a negative array index is a named property access which V8 can't serve from the fast elements path, this made every mounted child pay a dictionary lookup. - Compare remainingOldChildren against (matched ? 1 : 0) instead of the boolean so the comparison stays on the Smi fast path.
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cloneElementwithcreateElementbenefits gzip with 8 bytes