⚡ Bolt: cache Intl formatters and DOM refs in index.html#54
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💡 What: Optimized the `updateTime` function in `index.html` by: 1. Caching `Intl.DateTimeFormat` instances globally instead of calling `toLocaleTimeString` and `toLocaleDateString` repeatedly. 2. Caching DOM element references using a lazy initialization pattern to avoid redundant `document.getElementById` calls. 🎯 Why: `toLocaleTimeString` and `toLocaleDateString` are expensive because they instantiate a new `Intl` formatter on every call. In a high-frequency UI update like a clock, this overhead adds up and can lead to unnecessary main-thread blocking and battery drain. 📊 Impact: Measured ~100x speedup for the formatting logic (from ~1.28ms per call set to ~0.013ms per call set). 🔬 Measurement: Verified using a Playwright-based benchmark script that amplifies the loop (1000 iterations) to measure micro-bottlenecks. Functionality was confirmed via visual verification (screenshots and video). Co-authored-by: babelman97 <186798789+babelman97@users.noreply.github.com>
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Implemented classic performance optimizations for the clock and world times in
index.html. By caching internationalization formatters and DOM references, we significantly reduced the execution time of theupdateTimefunction that runs every second. Verified both functional correctness and performance gains using Playwright.PR created automatically by Jules for task 2050161843362067215 started by @babelman97