perf: reduce overhead in DevTools utilities#36482
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This utility layer is designed for React DevTools, runtime inspection, Fiber debugging, and serialization pipelines with a strong focus on performance, low memory allocation, and fast object traversal. It uses WeakMap caching in getDisplayName() to avoid repeated component name resolution and an LRU cache in utfEncodeString() to reuse encoded Unicode arrays and reduce serialization overhead. The object access engine (getInObject(), setInObject(), deletePathInObject(), renamePathInObject()) provides fast deep-path mutation and traversal with iterable support. getDataType() performs advanced runtime type detection for arrays, typed arrays, promises, errors, iterators, and class instances, while formatDataForPreview() generates compact Chrome-style previews for DevTools inspection. shallowDiffers() enables lightweight O(n) shallow comparison for memoization and update detection. UTF handling is optimized through direct code-point processing and surrogate pair support for safe emoji/unicode serialization. Additional helpers such as unionOfTwoArrays(), normalizeUrlIfValid(), and printOperationsArray() improve array merging, URL validation, and renderer operation debugging. The entire architecture follows a cache-first, low-GC, high-throughput design optimized for large React component trees and heavy profiling sessions.
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This utility layer is designed for React DevTools, runtime inspection, Fiber debugging, and serialization pipelines with a strong focus on performance, low memory allocation, and fast object traversal. It uses WeakMap caching in getDisplayName() to avoid repeated component name resolution and an LRU cache in utfEncodeString() to reuse encoded Unicode arrays and reduce serialization overhead. The object access engine (getInObject(), setInObject(), deletePathInObject(), renamePathInObject()) provides fast deep-path mutation and traversal with iterable support. getDataType() performs advanced runtime type detection for arrays, typed arrays, promises, errors, iterators, and class instances, while formatDataForPreview() generates compact Chrome-style previews for DevTools inspection. shallowDiffers() enables lightweight O(n) shallow comparison for memoization and update detection. UTF handling is optimized through direct code-point processing and surrogate pair support for safe emoji/unicode serialization. Additional helpers such as unionOfTwoArrays(), normalizeUrlIfValid(), and printOperationsArray() improve array merging, URL validation, and renderer operation debugging. The entire architecture follows a cache-first, low-GC, high-throughput design optimized for large React component trees and heavy profiling sessions.