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Devan Buggay

Developer

Devan Buggay

devanb@meta.com

80 commits~3 files/commit

Performance

2026Previous year

Insights

Key patterns and highlights from this developer's activity.

Peak MonthSep'25143 performance
Growth Trend↓28%vs prior period
Avg Files/Commit3files per commit
Active Days39of 455 days
Top Reporeact-native72 commits

Effort Over Time

Breakdown of growth, maintenance, and fixes effort over time.

Bug Behavior

Beta

Bugs introduced vs. fixed over time.

Investment Quality

Beta

Reclassifies engineering effort based on bug attribution. Commits that introduced bugs are retrospectively counted as poor investments.

81%Productive TimeGrowth 83% + Fixes 17%
17%Maintenance Time
2%Wasted Time
How it works

Methodology

Investment Quality reclassifies engineering effort based on bug attribution data. Commits identified as buggy origins (those that introduced bugs later fixed by someone) have their grow and maintenance time moved into the Wasted Time category. Their waste (fix commits) remains counted as productive. All other commits retain their standard classification: grow is productive, maintenance is maintenance, and waste (fixes) is productive.

Relationship to Growth / Maintenance / Fixes

The standard model classifies commits as Growth, Maintenance, or Fixes. Investment Quality adds a quality lens: a commit that introduced a bug is retrospectively counted as a poor investment — the engineering time spent on it was wasted because it ultimately required additional fix work. Fix commits (Fixes in the standard model) are reframed as productive, because fixing bugs is valuable work.

Proposed API Endpoint

Currently computed client-side from commit and bug attribution data. Ideal server-side endpoint:

POST /v1/organizations/{orgId}/investment-quality
Content-Type: application/json

Request:
{
  "startTime": "2025-01-01T00:00:00Z",
  "endTime": "2025-12-31T23:59:59Z",
  "bucketSize": "BUCKET_SIZE_MONTH",
  "groupBy": ["repository_id" | "deliverer_email"]
}

Response:
{
  "productivePct": 74,
  "maintenancePct": 18,
  "wastedPct": 8,
  "buckets": [
    {
      "bucketStart": "2025-01-01T00:00:00Z",
      "productive": 4.2,
      "maintenance": 1.8,
      "wasted": 0.6
    }
  ]
}

Recent Activity

Latest analyzed commits from this developer.

HashMessageDateFilesEffort
61518a6This commit introduces **support for JavaScript bundling** for **AppleTV (tvOS)** applications, specifically resolving an issue where Hermes bundles were not being generated. It **adds tvOS to the platform selection logic** within the `_select_platform` function in `prelude/js/js.bzl`, treating it as `ios` for bundling purposes. This **new capability** ensures that tvOS apps can now correctly generate and include Hermes JavaScript bundles, aligning their build process with other Apple platforms. The change primarily impacts the **build system's JavaScript tooling**, enabling proper compilation and packaging for tvOS targets.Mar 191grow
e6ef922This commit **adds AppleTV as a supported platform** by including `APPLETVOS_ARM64` in the platform definitions within `prelude/platforms/apple/platforms.bzl`. This **new capability** expands the project's build system to officially recognize and target Apple TV devices. Consequently, developers can now build and deploy applications specifically for Apple TV, leveraging the existing build infrastructure.Mar 191grow
0f92aa6This commit introduces a **new capability** by wiring up the native side of the `focusable` prop for **Fabric views**, specifically targeting **tvOS**. It adds properties and implements focus management logic within `RCTSurfaceHostingProxyRootView` to handle preferred focus environments and updates based on surface stage changes. Furthermore, `RCTViewComponentView` gains a `focusable` property and associated methods like `canBecomeFocused` to enable individual views to participate in the tvOS focus system. This enhancement allows React Native applications on tvOS to properly manage and respond to user focus interactions, improving navigation and accessibility.Mar 193grow
bea42e5This commit introduces a **new `focusable` prop** to **iOS view components**, primarily to facilitate focus management within **Apple TV applications**. It enables the internal reuse of this property to control `canBecomeFocused` on tvOS, enhancing the platform's focus behavior. The changes involve updating `BaseViewConfig.ios.js` and adding new `HostPlatformViewProps` and related files for **tvOS-specific view rendering**, allowing the renderer to process this new property. This is a **new capability** for internal use, specifically targeting the **React Native renderer's view props handling** for Apple TV, and is not intended as a public API change.Mar 186grow
cb24531This commit **introduces AppleTV support** for the **`RNTester` application**, enabling it to run on `tvOS` devices. It achieves this by adding a new `tvOS` binary and platform configuration for `RNTester`. Specifically, the `AppDelegate.mm` file is updated with conditional compilation directives to exclude iOS-specific APIs when building for `tvOS`, ensuring compatibility. This **new capability** allows developers to validate React Native features directly on the AppleTV platform.Feb 101grow
3222759This commit provides **miscellaneous build system support** for **AppleTV**, addressing remaining compilation issues for React Native projects. It **updates the `folly` build definitions** by adding `CLANG_CXX_FLAGS` for the `appletvos` platform to the `folly_xplat_library` in `folly/defs.bzl`. This **maintenance** change is crucial for enabling `folly` and, consequently, **React Native applications**, to successfully build and run on **AppleTV**.Feb 101grow
344264bThis commit **adds comprehensive support for AppleTV platforms** within the build system's Apple platform definitions. It **introduces new platform constants** and updates the platform resolution logic in `set_apple_platforms` and `_get_analysis_platform_for_supported_platforms` within `prelude/platforms/apple/platforms.bzl`. This **new capability** is a critical **feature** that enables **React Native projects to successfully build for tvOS**, by ensuring the necessary AppleTV SDKs are correctly identified and integrated into the build process.Feb 101grow
4535df4This commit **enables** the `externalElementInspectionEnabled` feature flag, activating the **Livemate frontend and Metro injection** functionality. It updates the default value to `true` in both the `ReactNativeFeatureFlags.config.js` configuration and the `ReactNativeFeatureFlags.js` JavaScript getter. This **feature enablement** makes the external element inspection capability available by default, impacting developer tooling and debugging workflows by providing new inspection capabilities.Feb 102grow
d494510This commit introduces **external element inspection** capabilities to React Native, allowing external tools to interact with and inspect UI elements. It adds a new `useExternalInspection` hook and integrates it into the `AppContainer` and existing `Inspector` components, enabling them to report touched view data. The `InspectorOverlay` is updated to visually indicate when external inspection is active, displaying a red border. This **new capability** is controlled by a new `externalElementInspectionEnabled` **feature flag** within the `ReactNativeFeatureFlags` system. This significantly enhances the **developer experience** by providing a new API for advanced debugging and analysis workflows.Feb 66grow
175fcd3This commit **enables AppleTV support** for cross-platform targets by adding `APPLETVOS` to the default Apple SDKs. It modifies the `folly/defs.bzl` file to include this new SDK definition. This is a **new capability** that allows a broader range of **xplat targets** to be built with AppleTV SDK support, significantly expanding the project's platform compatibility for Apple devices.Feb 51grow
dd56bb0This commit delivers a **usability improvement** to the **ReactDevToolsOverlay** component selector, addressing issues where the inspector would frequently fail to select elements or automatically turn off. It **disables the automatic turn-off behavior** of the inspector after a selection is made, requiring users to manually disable it instead. This **maintenance** change, primarily affecting `ReactDevToolsOverlay.js` and its inspection functions, significantly enhances the **developer experience** across **all platforms** by preventing perceived failures and improving the component inspection workflow.Feb 31waste
7937a3cThis commit introduces **support for Apple TV SDKs** by adding `appletvos` and `appletvsimulator` to the list of recognized SDKs within the `prelude/platforms/apple/sdk.bzl` configuration. This **new feature** expands the capabilities of the **Apple platform build system**, allowing projects to target and build applications specifically for Apple TV devices and their corresponding simulators. The change enables developers to leverage the existing build infrastructure for Apple TV development, facilitating broader platform compatibility.Jan 262grow
3123592This commit **refactors** the **build system configuration** within `folly/BUCK` and `folly/portability/BUCK` by introducing and utilizing the new `ALL_APPLE_SDKS` definition. This new macro standardizes the list of supported Apple SDKs, now explicitly including `appletvos`. The change updates various build targets to use `ALL_APPLE_SDKS` instead of explicit SDK lists, improving **maintainability** and consistency across the codebase. This update is currently limited to targets that already support `watchos` and `visionos` to manage potential downstream impact, ensuring a controlled rollout of `appletvos` support.Jan 262maint
355b1cbThis commit performs **platform-specific maintenance** by removing `UIStatusBar` related API usage from the **AppleTV platform**. It **refactors** the build process to conditionally exclude the `RCTStatusBarManager` and its associated `RCTConvert (UIStatusBar)` category, as well as `preferredStatusBarStyle` and `prefersStatusBarHidden` methods within `RCTFabricModalHostViewController`, from AppleTV builds. This change ensures **improved compatibility** and prevents compilation issues on AppleTV, where these UIStatusBar APIs are not available. The approach uses build exclusion rules rather than adding more platform-specific guards within the code.Jan 232maint
557bafbThis commit introduces a **new capability** to the **React Native Element Inspector**, enabling it to function as a **component selector**. It adds the `selectNodeWithViewData` method signature to the `ReactDevToolsAgent` type definition and integrates a call to this method within the `Inspector` component, passing the current `viewData`. This enhancement specifically allows leveraging the element inspector for component selection in `react-native+livemate` environments, significantly improving the **developer experience** for debugging and interaction.Jan 222grow
3bc9a5cThis commit implements **platform-specific adaptations** to enhance **AppleTV compatibility** by stubbing out several UIKit components and functionalities unavailable on tvOS. It introduces conditional compilation to disable or provide no-op implementations for `UISwitch`, `UIRefreshControl`, `UIKeyboardNotifications`, and `UIPasteBoard` operations across various **React Native core modules** such as `RCTActionSheetManager`, `RCTClipboard`, and `RCTKeyboardObserver`. This **compatibility improvement** prevents runtime errors and ensures that applications targeting AppleTV can build and run stably, gracefully handling features not supported by the tvOS platform.Jan 166grow
1165c07This commit introduces **platform-specific compilation guards** to the **LogBox and RedBox components** within React Native's core modules. It addresses compilation errors on **tvOS** by conditionally compiling UIKit APIs such as `windowLevel`, `separatorColor`, `separatorStyle`, and `UIPasteboard`, which are unavailable on that platform. This **bug fix** ensures that React Native applications can correctly compile and display error overlays on AppleTV, significantly improving **tvOS compatibility** and developer experience for developers targeting the platform.Jan 163waste
b8392adThis commit **removes** the `SurfaceTouch` and `SurfacePointer` handlers specifically for **Apple TV builds** within the React Native framework. It conditionally disables or entirely compiles out these handlers and their related components, including `RCTInputAccessoryComponentView`, `RCTFabricModalHostViewController`, `RCTSurfacePointerHandler`, `RCTSurfaceTouchHandler`, and `RCTFabricSurface`. This **maintenance** change addresses the use of unsupported UIKit APIs on tvOS, where these handlers were non-functional due to a lack of click-through support. The modification **optimizes** the tvOS build by eliminating dead code and potential compatibility issues, ensuring a cleaner and more stable experience on that platform.Jan 165waste
808882cThis commit is a **maintenance fix** that **updates `@available` directives** across the **React Native Fabric renderer** to explicitly include **tvOS** support. It modifies `packages/react-native/React/Fabric/Mounting/ComponentViews/TextInput/RCTTextInputUtils.mm` for `UITextContentType` definitions (`tvOS 15.0`), `packages/react-native/React/Fabric/RCTSurfacePointerHandler.mm` for pointer event calculations (`tvOS 13.4`), and `packages/react-native/ReactCommon/react/renderer/textlayoutmanager/platform/ios/react/renderer/textlayoutmanager/RCTTextPrimitivesConversions.h` for `NSLineBreakStrategy` conversions (`tvOS 14.0`). This ensures that core components related to **text input, pointer events, and text layout** correctly declare their availability, resolving build issues and enabling proper compilation and functionality for React Native applications targeting **tvOS**.Jan 163grow
7b0dbc1This commit introduces **conditional compilation** to the **`RCTPushNotificationManager`** module, specifically targeting **AppleTV (tvOS)**. It **disables unsupported push notification APIs**, such as `removeDeliveredNotifications` and `removeAllDeliveredNotifications`, by no-oping them when compiling for tvOS. This **compatibility fix** ensures that the `PushNotificationIOS` module can successfully compile for the AppleTV platform. The change enables broader platform support for React Native applications, allowing them to build and potentially run on tvOS, albeit with certain push notification management features unavailable.Jan 161grow
61518a6Mar 19

This commit introduces **support for JavaScript bundling** for **AppleTV (tvOS)** applications, specifically resolving an issue where Hermes bundles were not being generated. It **adds tvOS to the platform selection logic** within the `_select_platform` function in `prelude/js/js.bzl`, treating it as `ios` for bundling purposes. This **new capability** ensures that tvOS apps can now correctly generate and include Hermes JavaScript bundles, aligning their build process with other Apple platforms. The change primarily impacts the **build system's JavaScript tooling**, enabling proper compilation and packaging for tvOS targets.

1 filesgrow
e6ef922Mar 19

This commit **adds AppleTV as a supported platform** by including `APPLETVOS_ARM64` in the platform definitions within `prelude/platforms/apple/platforms.bzl`. This **new capability** expands the project's build system to officially recognize and target Apple TV devices. Consequently, developers can now build and deploy applications specifically for Apple TV, leveraging the existing build infrastructure.

1 filesgrow
0f92aa6Mar 19

This commit introduces a **new capability** by wiring up the native side of the `focusable` prop for **Fabric views**, specifically targeting **tvOS**. It adds properties and implements focus management logic within `RCTSurfaceHostingProxyRootView` to handle preferred focus environments and updates based on surface stage changes. Furthermore, `RCTViewComponentView` gains a `focusable` property and associated methods like `canBecomeFocused` to enable individual views to participate in the tvOS focus system. This enhancement allows React Native applications on tvOS to properly manage and respond to user focus interactions, improving navigation and accessibility.

3 filesgrow
bea42e5Mar 18

This commit introduces a **new `focusable` prop** to **iOS view components**, primarily to facilitate focus management within **Apple TV applications**. It enables the internal reuse of this property to control `canBecomeFocused` on tvOS, enhancing the platform's focus behavior. The changes involve updating `BaseViewConfig.ios.js` and adding new `HostPlatformViewProps` and related files for **tvOS-specific view rendering**, allowing the renderer to process this new property. This is a **new capability** for internal use, specifically targeting the **React Native renderer's view props handling** for Apple TV, and is not intended as a public API change.

6 filesgrow
cb24531Feb 10

This commit **introduces AppleTV support** for the **`RNTester` application**, enabling it to run on `tvOS` devices. It achieves this by adding a new `tvOS` binary and platform configuration for `RNTester`. Specifically, the `AppDelegate.mm` file is updated with conditional compilation directives to exclude iOS-specific APIs when building for `tvOS`, ensuring compatibility. This **new capability** allows developers to validate React Native features directly on the AppleTV platform.

1 filesgrow
3222759Feb 10

This commit provides **miscellaneous build system support** for **AppleTV**, addressing remaining compilation issues for React Native projects. It **updates the `folly` build definitions** by adding `CLANG_CXX_FLAGS` for the `appletvos` platform to the `folly_xplat_library` in `folly/defs.bzl`. This **maintenance** change is crucial for enabling `folly` and, consequently, **React Native applications**, to successfully build and run on **AppleTV**.

1 filesgrow
344264bFeb 10

This commit **adds comprehensive support for AppleTV platforms** within the build system's Apple platform definitions. It **introduces new platform constants** and updates the platform resolution logic in `set_apple_platforms` and `_get_analysis_platform_for_supported_platforms` within `prelude/platforms/apple/platforms.bzl`. This **new capability** is a critical **feature** that enables **React Native projects to successfully build for tvOS**, by ensuring the necessary AppleTV SDKs are correctly identified and integrated into the build process.

1 filesgrow
4535df4Feb 10

This commit **enables** the `externalElementInspectionEnabled` feature flag, activating the **Livemate frontend and Metro injection** functionality. It updates the default value to `true` in both the `ReactNativeFeatureFlags.config.js` configuration and the `ReactNativeFeatureFlags.js` JavaScript getter. This **feature enablement** makes the external element inspection capability available by default, impacting developer tooling and debugging workflows by providing new inspection capabilities.

2 filesgrow
d494510Feb 6

This commit introduces **external element inspection** capabilities to React Native, allowing external tools to interact with and inspect UI elements. It adds a new `useExternalInspection` hook and integrates it into the `AppContainer` and existing `Inspector` components, enabling them to report touched view data. The `InspectorOverlay` is updated to visually indicate when external inspection is active, displaying a red border. This **new capability** is controlled by a new `externalElementInspectionEnabled` **feature flag** within the `ReactNativeFeatureFlags` system. This significantly enhances the **developer experience** by providing a new API for advanced debugging and analysis workflows.

6 filesgrow
175fcd3Feb 5

This commit **enables AppleTV support** for cross-platform targets by adding `APPLETVOS` to the default Apple SDKs. It modifies the `folly/defs.bzl` file to include this new SDK definition. This is a **new capability** that allows a broader range of **xplat targets** to be built with AppleTV SDK support, significantly expanding the project's platform compatibility for Apple devices.

1 filesgrow
dd56bb0Feb 3

This commit delivers a **usability improvement** to the **ReactDevToolsOverlay** component selector, addressing issues where the inspector would frequently fail to select elements or automatically turn off. It **disables the automatic turn-off behavior** of the inspector after a selection is made, requiring users to manually disable it instead. This **maintenance** change, primarily affecting `ReactDevToolsOverlay.js` and its inspection functions, significantly enhances the **developer experience** across **all platforms** by preventing perceived failures and improving the component inspection workflow.

1 fileswaste
7937a3cJan 26

This commit introduces **support for Apple TV SDKs** by adding `appletvos` and `appletvsimulator` to the list of recognized SDKs within the `prelude/platforms/apple/sdk.bzl` configuration. This **new feature** expands the capabilities of the **Apple platform build system**, allowing projects to target and build applications specifically for Apple TV devices and their corresponding simulators. The change enables developers to leverage the existing build infrastructure for Apple TV development, facilitating broader platform compatibility.

2 filesgrow
3123592Jan 26

This commit **refactors** the **build system configuration** within `folly/BUCK` and `folly/portability/BUCK` by introducing and utilizing the new `ALL_APPLE_SDKS` definition. This new macro standardizes the list of supported Apple SDKs, now explicitly including `appletvos`. The change updates various build targets to use `ALL_APPLE_SDKS` instead of explicit SDK lists, improving **maintainability** and consistency across the codebase. This update is currently limited to targets that already support `watchos` and `visionos` to manage potential downstream impact, ensuring a controlled rollout of `appletvos` support.

2 filesmaint
355b1cbJan 23

This commit performs **platform-specific maintenance** by removing `UIStatusBar` related API usage from the **AppleTV platform**. It **refactors** the build process to conditionally exclude the `RCTStatusBarManager` and its associated `RCTConvert (UIStatusBar)` category, as well as `preferredStatusBarStyle` and `prefersStatusBarHidden` methods within `RCTFabricModalHostViewController`, from AppleTV builds. This change ensures **improved compatibility** and prevents compilation issues on AppleTV, where these UIStatusBar APIs are not available. The approach uses build exclusion rules rather than adding more platform-specific guards within the code.

2 filesmaint
557bafbJan 22

This commit introduces a **new capability** to the **React Native Element Inspector**, enabling it to function as a **component selector**. It adds the `selectNodeWithViewData` method signature to the `ReactDevToolsAgent` type definition and integrates a call to this method within the `Inspector` component, passing the current `viewData`. This enhancement specifically allows leveraging the element inspector for component selection in `react-native+livemate` environments, significantly improving the **developer experience** for debugging and interaction.

2 filesgrow
3bc9a5cJan 16

This commit implements **platform-specific adaptations** to enhance **AppleTV compatibility** by stubbing out several UIKit components and functionalities unavailable on tvOS. It introduces conditional compilation to disable or provide no-op implementations for `UISwitch`, `UIRefreshControl`, `UIKeyboardNotifications`, and `UIPasteBoard` operations across various **React Native core modules** such as `RCTActionSheetManager`, `RCTClipboard`, and `RCTKeyboardObserver`. This **compatibility improvement** prevents runtime errors and ensures that applications targeting AppleTV can build and run stably, gracefully handling features not supported by the tvOS platform.

6 filesgrow
1165c07Jan 16

This commit introduces **platform-specific compilation guards** to the **LogBox and RedBox components** within React Native's core modules. It addresses compilation errors on **tvOS** by conditionally compiling UIKit APIs such as `windowLevel`, `separatorColor`, `separatorStyle`, and `UIPasteboard`, which are unavailable on that platform. This **bug fix** ensures that React Native applications can correctly compile and display error overlays on AppleTV, significantly improving **tvOS compatibility** and developer experience for developers targeting the platform.

3 fileswaste
b8392adJan 16

This commit **removes** the `SurfaceTouch` and `SurfacePointer` handlers specifically for **Apple TV builds** within the React Native framework. It conditionally disables or entirely compiles out these handlers and their related components, including `RCTInputAccessoryComponentView`, `RCTFabricModalHostViewController`, `RCTSurfacePointerHandler`, `RCTSurfaceTouchHandler`, and `RCTFabricSurface`. This **maintenance** change addresses the use of unsupported UIKit APIs on tvOS, where these handlers were non-functional due to a lack of click-through support. The modification **optimizes** the tvOS build by eliminating dead code and potential compatibility issues, ensuring a cleaner and more stable experience on that platform.

5 fileswaste
808882cJan 16

This commit is a **maintenance fix** that **updates `@available` directives** across the **React Native Fabric renderer** to explicitly include **tvOS** support. It modifies `packages/react-native/React/Fabric/Mounting/ComponentViews/TextInput/RCTTextInputUtils.mm` for `UITextContentType` definitions (`tvOS 15.0`), `packages/react-native/React/Fabric/RCTSurfacePointerHandler.mm` for pointer event calculations (`tvOS 13.4`), and `packages/react-native/ReactCommon/react/renderer/textlayoutmanager/platform/ios/react/renderer/textlayoutmanager/RCTTextPrimitivesConversions.h` for `NSLineBreakStrategy` conversions (`tvOS 14.0`). This ensures that core components related to **text input, pointer events, and text layout** correctly declare their availability, resolving build issues and enabling proper compilation and functionality for React Native applications targeting **tvOS**.

3 filesgrow
7b0dbc1Jan 16

This commit introduces **conditional compilation** to the **`RCTPushNotificationManager`** module, specifically targeting **AppleTV (tvOS)**. It **disables unsupported push notification APIs**, such as `removeDeliveredNotifications` and `removeAllDeliveredNotifications`, by no-oping them when compiling for tvOS. This **compatibility fix** ensures that the `PushNotificationIOS` module can successfully compile for the AppleTV platform. The change enables broader platform support for React Native applications, allowing them to build and potentially run on tvOS, albeit with certain push notification management features unavailable.

1 filesgrow

Work Patterns

Beta

Commit activity distribution by hour and day of week. Shows when this developer is most active.

Collaboration

Beta

Developers who frequently work on the same files and symbols. Higher score means stronger code collaboration.

NavigaraNavigara
OrganizationsDistributionCompareResearch