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lahmatiy avatar

lahmatiy/react-render-tracker

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View on GitHub↗

React Render Tracker

React Render Tracker is a diagnostic utility designed to monitor and analyze the rendering behavior of React applications. It functions as a developer tool that tracks component lifecycles, visualizes component hierarchies, and identifies the specific state, prop, or context changes that trigger re-renders.

The tool distinguishes itself by providing deep visibility into internal framework operations, including the ability to inspect hook states and map the live component tree. It offers flexible inspection configurations, allowing developers to monitor performance through in-page overlays, browser developer tools, or remote connections.

Beyond manual debugging, the project supports automated performance verification by integrating with headless browser environments. This enables the programmatic collection of lifecycle events and rendering metrics, facilitating the detection of performance regressions within automated test suites.

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lahmatiy.github.io/react-render-tracker
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Features

  • React Component Debuggers - Tracks component lifecycles and identifies state changes causing unintentional re-renders.
  • Lifecycle Interception Patches - Implements runtime interception of component lifecycle events to enable diagnostic monitoring.
  • Update Cause Analysis - Identifies the specific props, state, or context changes that trigger component re-renders to help developers diagnose performance issues.
  • Execution Lifecycle Monitors - Tracks component mounting, updating, and unmounting events to identify performance bottlenecks.
  • Remote Debugging Bridges - Streams captured performance data to external tools for visualization and analysis.
  • Analyzers - Measures rendering timings and hook recomputations to identify performance degradation.
  • Virtual-to-DOM Mappings - Maps virtual component trees to physical host elements for structural analysis.
  • Component State and Effect Hooks - Captures and displays updates to component state and hooks to reveal re-render triggers.
  • State Change Observers - Monitors internal state updates to identify triggers for component re-renders.
  • Component Tree Traversers - Navigates rendered component hierarchies to extract metadata and lifecycle information.
  • Frontend Performance Monitors - Provides a diagnostic interface for analyzing rendering timings and lifecycle events.
  • Headless Browser Testing Frameworks - Integrates with headless browsers to automate performance verification and lifecycle analysis.
  • React Performance Optimization - Identifies and resolves unnecessary re-renders to improve interface responsiveness.
  • Browser Performance Testing - Automates performance testing by monitoring component lifecycles within headless browser environments.
  • Component Hierarchy Viewers - Visualizes the live component tree to help developers navigate and understand relationships.
  • Application Profilers - Visualizes component hierarchies and tracks update triggers to analyze rendering efficiency.
  • React Development - Visualizes component hierarchies and hook updates to pinpoint performance bottlenecks.
2,401 stars·36 forks·TypeScript·MIT·25 views

Star history

Star history chart for lahmatiy/react-render-trackerStar history chart for lahmatiy/react-render-tracker

How this analysis was created: This summary and feature list are AI-generated from collected project material and can contain mistakes. Stars, license and language are imported from GitHub. Inclusion does not mean that we have tested or audited this project. Check the source documentation for any feature you depend on. Learn more on our About page.

Frequently asked questions

What does lahmatiy/react-render-tracker do?

React Render Tracker is a diagnostic utility designed to monitor and analyze the rendering behavior of React applications. It functions as a developer tool that tracks component lifecycles, visualizes component hierarchies, and identifies the specific state, prop, or context changes that trigger re-renders.

What are the main features of lahmatiy/react-render-tracker?

The main features of lahmatiy/react-render-tracker are: React Component Debuggers, Lifecycle Interception Patches, Update Cause Analysis, Execution Lifecycle Monitors, Remote Debugging Bridges, Analyzers, Virtual-to-DOM Mappings, Component State and Effect Hooks.

Which projects share features with lahmatiy/react-render-tracker?

Projects with overlapping indexed features include: welldone-software/why-did-you-render — This project is a performance debugger and render profiler for React and React Native applications. It serves as a… facebook/react-devtools — React DevTools is a set of web browser developer tools integrated into Chrome and Firefox. It functions as a component… facebook/prop-types — prop-types is a JavaScript object validator and runtime type checker. It serves as a development tool for verifying… garbles/why-did-you-update — why-did-you-update is a React development tool and performance profiler designed to identify unnecessary component… zerobias/effector — Effector is a reactive state management library and data flow orchestrator designed for building complex, event-driven… aidenybai/react-grab — React Grab is a browser-based code navigator and component inspector that links rendered user interface elements to…

Projects sharing features with React Render Tracker

These projects share indexed features with React Render Tracker. Shared tags can include platform or build tooling; verify the primary use case before treating a result as a replacement.
  • welldone-software/why-did-you-renderwelldone-software avatar

    welldone-software/why-did-you-render

    12,489View on GitHub↗

    This project is a performance debugger and render profiler for React and React Native applications. It serves as a diagnostic utility to detect avoidable render cycles and identify the specific props, state, or hook changes that trigger component updates. The tool distinguishes itself by tracking the execution of both custom and third-party hooks to determine if their return values are causing unnecessary renders. It employs deep equality checks to notify developers when a component re-renders despite its props and state remaining functionally identical. Broad capabilities include frontend b

    JavaScriptcomponenthooks-trackingperformance
    View on GitHub↗12,489
  • facebook/react-devtoolsfacebook avatar

    facebook/react-devtools

    11,012View on GitHub↗

    React DevTools is a set of web browser developer tools integrated into Chrome and Firefox. It functions as a component inspector and UI debugger designed to visualize the component hierarchy and analyze the runtime behavior of React applications. The project includes a performance profiler used to detect unnecessary component re-renders and improve rendering efficiency. It also provides utilities for mapping virtual component trees to the physical DOM and linking rendered UI elements directly to their corresponding source code files and line numbers. The toolset covers component hierarchy vi

    View on GitHub↗11,012
  • facebook/prop-typesfacebook avatar

    facebook/prop-types

    4,452View on GitHub↗

    prop-types is a JavaScript object validator and runtime type checker. It serves as a development tool for verifying that object properties match predefined specifications, primarily used to ensure that data passed into React components aligns with expected types. The utility detects data inconsistencies by logging warnings to the console when mismatches occur, rather than throwing exceptions. It employs a stateful warning cache to prevent duplicate logs and restricts validation logic to non-production environments to avoid performance overhead in released builds. The project covers data vali

    JavaScript
    View on GitHub↗4,452
  • garbles/why-did-you-updategarbles avatar

    garbles/why-did-you-update

    4,930View on GitHub↗

    why-did-you-update is a React development tool and performance profiler designed to identify unnecessary component re-renders. It functions as a render debugger that logs the specific prop and state changes triggering updates to the developer console. The utility focuses on React performance optimization by detecting wasteful update cycles. It provides diagnostic logging to highlight why a component updated, helping to reduce redundant user interface cycles. The tool covers frontend performance profiling through the use of higher-order component wrappers, state snapshot comparisons, and refe

    JavaScript
    View on GitHub↗4,930
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