A high-performance timer-based profiler for React Native that helps identify significant performance bottlenecks.
Slowlog is a high-performance timer-based profiler specifically designed for React Native applications. It helps developers identify significant performance bottlenecks in their React Native components by timing method executions and flagging operations that exceed configurable thresholds. The tool serves as a first-line defense against performance issues before developers need to use more complex profiling tools.
React Native developers who need to identify and debug performance issues in their mobile applications, particularly those working on complex components or experiencing UI lag and responsiveness problems.
Developers choose Slowlog because it provides a lightweight, focused approach to React Native performance profiling that runs only in development mode, has minimal overhead, and offers flexible configuration options for method filtering and threshold settings.
A high-performance timer based profiler for React Native that helps you track big performance problems.
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Uses efficient timing mechanisms and automatically runs only in developer mode via the __DEV__ flag, ensuring no performance impact in production environments.
Allows setting custom millisecond thresholds and supports custom logging objects, as detailed in the options for verbose, threshold, and log parameters.
Enables profiling of specific component methods using regular expression patterns, allowing focused analysis on problematic areas without unnecessary overhead.
Provides exclusion lists to skip methods like constructor, as mentioned in the README, preventing clutter and ensuring relevant profiling data.
Limited to development mode only, making it unsuitable for identifying performance issues that occur in real-world production scenarios where the __DEV__ flag is disabled.
Requires adding slowlog to each component manually, which can be tedious and error-prone in large applications, as shown in the quickstart example.
With the copyright from 2016 and no recent updates indicated, it may lack compatibility with newer React Native versions or modern development practices like hooks and functional components.