Developer
Dawid Małecki
maleckidawid@meta.com
Performance
YoY:+448%Key patterns and highlights from this developer's activity.
Breakdown of growth, maintenance, and fixes effort over time.
Bugs introduced vs. fixed over time.
Reclassifies engineering effort based on bug attribution. Commits that introduced bugs are retrospectively counted as poor investments.
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.
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.
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
}
]
}Latest analyzed commits from this developer.
| Hash | Message | Date | Files |
|---|
Commit activity distribution by hour and day of week. Shows when this developer is most active.
Developers who frequently work on the same files and symbols. Higher score means stronger code collaboration.
| Effort |
|---|
| 868eb6c4 | This commit performs **maintenance** by **removing internal fantom test specific methods** from the **C++ API snapshot**. Specifically, `NativeFantomTestSpecificMethods` and `FantomForcedCloneCommitHook` are no longer included in the generated API. This is achieved by updating the `scripts/cxx-api/config.yml` file to add an exclusion pattern. The change ensures the **C++ API snapshot** remains focused on public-facing interfaces, preventing the exposure of internal test utilities and improving the API's clarity. | Mar 31 | 7 | maint |
| d920d109 | This commit delivers a **bug fix** for the **C++ API documentation generation** process, specifically resolving an issue where Doxygen incorrectly merged base classes from primary templates into their partial specializations. It introduces two complementary mechanisms within the `scripts/cxx-api/parser` module: `Extendable._deduplicate_base_classes` to remove exact duplicate base classes, and `StructLikeScopeKind._remove_merged_primary_bases` to subtract primary template bases from specializations. This ensures that the **inheritance lists** in the generated API documentation accurately reflect C++ semantics for template specializations, preventing contradictory type traits and duplicate entries. The fix impacts the accuracy of the **API snapshots** and improves the overall correctness of the C++ API documentation. | Mar 31 | 10 | maint |
| e78afea6 | This commit performs a **maintenance chore** by **excluding specific `UnstableLegacy` symbols** from the **public stable C++ API snapshot**. It updates `scripts/cxx-api/config.yml` to filter out symbols like `UnstableLegacyViewManagerAutomaticComponentDescriptor` and `UnstableLegacyViewManagerInteropComponentDescriptor`. This ensures that the generated **C++ API snapshot** accurately represents only stable interfaces, preventing accidental reliance on unstable or deprecated components. The change helps maintain the integrity and clarity of the project's stable C++ API definition. | Mar 31 | 7 | maint |
| b0b30b5a | This commit performs a significant **refactoring** of the **C++ API snapshot configuration** by introducing **global exclude patterns** and nesting platform-specific settings. The `scripts/cxx-api/config.yml` is updated to support a top-level `exclude_patterns` section, and the `scripts/cxx-api/parser/config.py` is modified to correctly parse this new structure. This enhancement improves the **modularization** of shared exclusion rules, preventing redundant processing of common inputs like `ReactCommon` across platforms such as `ReactAndroid` and `ReactApple`. The changes are validated with updated and new tests in `scripts/cxx-api/tests/test_config.py`. | Mar 31 | 3 | maint |
| d5130961 | This commit introduces a **new capability** to the **C++ API snapshot generation process**, allowing specific symbols to be excluded. It adds an `exclude_symbols` field to the `cxx-api` parser configuration, enabling developers to define patterns for symbols that should be stripped from the generated snapshot. The core logic in `scripts/cxx-api/parser/main.py` now processes these exclusion patterns during snapshot building, ensuring that unwanted or internal symbols are not included. This enhancement provides finer control over the API surface exposed in the snapshot, potentially improving its relevance and reducing its size. | Mar 31 | 5 | grow |
| 0979d502 | This commit introduces a **new CI workflow** to automatically validate the **C++ API snapshot** within the project's GitHub Actions pipeline. This **internal infrastructure improvement** ensures that the current C++ API definitions are always consistent with their generated counterparts, preventing unintended changes or regressions. Concurrently, the `scripts/cxx-api/parser/__main__.py` script was **refactored** to enhance the reliability of snapshot generation by pre-running codegen once per platform, which avoids race conditions and improves parallel execution. This work strengthens the project's **C++ API stability** and development process. | Mar 31 | 2 | maint |
| e90735b4 | This commit performs a **maintenance configuration update** to the **React Native build system**, specifically targeting the **ReactAndroid C++ API snapshot generation**. It **excludes the iOS-specific `Apple Switch` component** from being inadvertently included in the Android API snapshot. By adding `*/components/switch/iosswitch/*` to the `exclude_patterns` in `scripts/cxx-api/config.yml`, this change ensures the **ReactAndroid C++ API snapshot** accurately reflects only Android-relevant components, thereby improving the **purity and correctness of the Android API definition**. | Mar 31 | 3 | maint |
| 1d6e68bf | This commit introduces a **new capability** to the **C++ API parser script** by adding a `--xml` command-line flag. This flag allows developers to **persist Doxygen XML artifacts** generated during the snapshot creation process, which were previously deleted automatically. The change primarily affects the `scripts/cxx-api/parser/__main__.py` module, specifically within the `main` and `build_snapshots` functions. This **developer tooling enhancement** provides a crucial mechanism for **debugging** and **analyzing** the Doxygen output, improving the development workflow for C++ API documentation. | Mar 31 | 1 | grow |
| 9bc2050a | This commit implements a **bug fix** within the **Bridging module** of `ReactCommon`, specifically addressing the `fromJs` static method. It **corrects the return type** for `Bridging<std::pair<T1, T2>>::fromJs` from `std::pair<T1, T1>` to the semantically accurate `std::pair<T1, T2>`. This change ensures that the C++ bridging layer can correctly convert JavaScript arrays into `std::pair` objects with potentially different element types, thereby improving **type safety and correctness** for the C++ API. The updated API snapshots across various platforms reflect this essential **API correction**, preventing potential type mismatches in downstream C++ code. | Mar 31 | 7 | waste |
| 3a801793 | This commit performs a **maintenance cleanup** by **removing leaked test code** from the project's **C++ API snapshots**. It achieves this by updating the `scripts/cxx-api/config.yml` configuration file to explicitly **exclude test-related files** during the snapshot generation process. This change specifically impacts the C++ API snapshots for **ReactCommon**, **ReactAndroid**, and **ReactApple**. The primary goal is to ensure these critical API definitions are clean and free from unnecessary internal test artifacts, improving the integrity and relevance of the generated snapshots. | Mar 31 | 7 | maint |
| c54d353d | This commit **refactors** the **C++ public API parser** by renaming the command-line flag `--check` to `--validate` for improved **consistency** with the JS API command structure. This change affects the `scripts/cxx-api/parser/__main__.py` script, where the argument is updated, and the `scripts/cxx-api/parser/snapshot_diff.py` module, where the internal function `check_snapshots` is renamed to `validate_snapshots`. The primary purpose is to standardize the command for verifying that the C++ public API snapshot is in sync with the actual API surface. Users of the `cxx-api` parser will now need to use the `--validate` flag, a change reflected in the updated `scripts/cxx-api/README.md` documentation. | Mar 31 | 4 | maint |
| 7f879769 | This commit introduces a **maintenance improvement** by **excluding stub files** from the **C++ public API snapshot generation**. It updates the `scripts/cxx-api/config.yml` to incorporate a new exclusion pattern, preventing these irrelevant files from being included in the snapshot. This refinement ensures that the **public API surface representation** is more accurate and focused, providing a cleaner and more relevant **internal API documentation** for developers consuming the C++ modules. | Mar 31 | 7 | maint |
| 93ac8597 | Initial commit of Cxx API snapshots (#56152) | Mar 31 | 0 | – |
| 829a76af | This commit **updates the React Native Android C++ API snapshot configuration** to **exclude** the `InputAccessory` component. As `InputAccessory` is an **iOS-only component** with no Android support, its inclusion in the Android C++ API snapshot was redundant. This **maintenance change** modifies `scripts/cxx-api/config.yml` to prevent the component from being generated in the Android API definition. The exclusion **streamlines the Android C++ API** and **improves the accuracy** of the generated snapshot by removing irrelevant platform-specific elements. | Mar 31 | 3 | maint |
| 0642e41b | This commit **updates the configuration for the C++ public API snapshotting tool** to **exclude symbols prefixed with `Experimental`**. By modifying `scripts/cxx-api/config.yml`, the build process will now ignore these unstable interfaces when generating the public API snapshot. This **maintenance change** ensures that the **public C++ API surface** accurately reflects only stable and supported features, preventing external consumers from relying on experimental functionality that is subject to change or removal. The primary impact is **improved API stability and clarity** for developers integrating with the C++ core. | Mar 31 | 7 | maint |
| ef6777dd | This commit performs **maintenance** on the **ReactAndroid C++ API snapshot generation** by **excluding iOS-specific symbols**. Previously, the Android codegen inadvertently included CxxSpec templates, data structs, and bridging structs from iOS native modules, which are irrelevant to the Android platform, within the `ReactAndroid` build artifact. This change updates `scripts/cxx-api/config.yml` to filter out these unnecessary platform-specific symbols. The primary impact is a **cleaner and more efficient ReactAndroid C++ API snapshot**, reducing its size and complexity by removing irrelevant code. | Mar 31 | 3 | maint |
| 77b69a99 | This commit performs **maintenance** by **excluding 'Fantom' symbols** from the **C++ public API snapshots** generated during the codegen process. It achieves this by updating the `scripts/cxx-api/config.yml` file to include 'Fantom' in the list of symbols to be filtered out. This ensures that the **React Native C++ public API** accurately reflects only the intended external interfaces, preventing internal or deprecated components from appearing in the generated snapshots. The change contributes to a cleaner and more precise definition of the public API surface. | Mar 31 | 5 | maint |
| fd150efa | This commit introduces a **new capability** to the **C++ API snapshot generation system** by enabling platform-specific symbol exclusions. It modifies the `scripts/cxx-api/parser/config.py` to support platform-level `exclude_symbols` in the configuration, which are then merged with global exclusions. As a direct application, this **refinement** updates the `scripts/cxx-api/config.yml` to **exclude Android-specific symbols** from the `ReactApple` C++ API snapshots. This ensures that the `ReactAppleDebugCxx.api` and `ReactAppleReleaseCxx.api` files accurately represent only Apple-relevant interfaces, improving the clarity and correctness of the API definitions for **Apple platform development**. | Mar 31 | 5 | maint |
| 22b5d25c | Remove feature flags from the C++ public API snapshots (#56245) | Mar 31 | 0 | – |
| 7ee5275d | This commit **enhances developer tooling** by introducing convenient **npm aliases** for executing the `cxx-api` snapshot generation and validation scripts. Specifically, it adds `cxx-api-build` to run `python -m scripts.cxx-api.parser` and `cxx-api-validate` for `python -m scripts.cxx-api.parser --check`, simplifying the process of managing **C++ API snapshots**. Additionally, a JavaScript wrapper is provided for the Buck equivalent, further streamlining the build and validation workflow for **C++ modules**. This **tooling improvement** makes it easier for developers to maintain consistency and correctness in the C++ API. | Mar 19 | 3 | – |
This commit performs **maintenance** by **removing internal fantom test specific methods** from the **C++ API snapshot**. Specifically, `NativeFantomTestSpecificMethods` and `FantomForcedCloneCommitHook` are no longer included in the generated API. This is achieved by updating the `scripts/cxx-api/config.yml` file to add an exclusion pattern. The change ensures the **C++ API snapshot** remains focused on public-facing interfaces, preventing the exposure of internal test utilities and improving the API's clarity.
This commit delivers a **bug fix** for the **C++ API documentation generation** process, specifically resolving an issue where Doxygen incorrectly merged base classes from primary templates into their partial specializations. It introduces two complementary mechanisms within the `scripts/cxx-api/parser` module: `Extendable._deduplicate_base_classes` to remove exact duplicate base classes, and `StructLikeScopeKind._remove_merged_primary_bases` to subtract primary template bases from specializations. This ensures that the **inheritance lists** in the generated API documentation accurately reflect C++ semantics for template specializations, preventing contradictory type traits and duplicate entries. The fix impacts the accuracy of the **API snapshots** and improves the overall correctness of the C++ API documentation.
This commit performs a **maintenance chore** by **excluding specific `UnstableLegacy` symbols** from the **public stable C++ API snapshot**. It updates `scripts/cxx-api/config.yml` to filter out symbols like `UnstableLegacyViewManagerAutomaticComponentDescriptor` and `UnstableLegacyViewManagerInteropComponentDescriptor`. This ensures that the generated **C++ API snapshot** accurately represents only stable interfaces, preventing accidental reliance on unstable or deprecated components. The change helps maintain the integrity and clarity of the project's stable C++ API definition.
This commit performs a significant **refactoring** of the **C++ API snapshot configuration** by introducing **global exclude patterns** and nesting platform-specific settings. The `scripts/cxx-api/config.yml` is updated to support a top-level `exclude_patterns` section, and the `scripts/cxx-api/parser/config.py` is modified to correctly parse this new structure. This enhancement improves the **modularization** of shared exclusion rules, preventing redundant processing of common inputs like `ReactCommon` across platforms such as `ReactAndroid` and `ReactApple`. The changes are validated with updated and new tests in `scripts/cxx-api/tests/test_config.py`.
This commit introduces a **new capability** to the **C++ API snapshot generation process**, allowing specific symbols to be excluded. It adds an `exclude_symbols` field to the `cxx-api` parser configuration, enabling developers to define patterns for symbols that should be stripped from the generated snapshot. The core logic in `scripts/cxx-api/parser/main.py` now processes these exclusion patterns during snapshot building, ensuring that unwanted or internal symbols are not included. This enhancement provides finer control over the API surface exposed in the snapshot, potentially improving its relevance and reducing its size.
This commit introduces a **new CI workflow** to automatically validate the **C++ API snapshot** within the project's GitHub Actions pipeline. This **internal infrastructure improvement** ensures that the current C++ API definitions are always consistent with their generated counterparts, preventing unintended changes or regressions. Concurrently, the `scripts/cxx-api/parser/__main__.py` script was **refactored** to enhance the reliability of snapshot generation by pre-running codegen once per platform, which avoids race conditions and improves parallel execution. This work strengthens the project's **C++ API stability** and development process.
This commit performs a **maintenance configuration update** to the **React Native build system**, specifically targeting the **ReactAndroid C++ API snapshot generation**. It **excludes the iOS-specific `Apple Switch` component** from being inadvertently included in the Android API snapshot. By adding `*/components/switch/iosswitch/*` to the `exclude_patterns` in `scripts/cxx-api/config.yml`, this change ensures the **ReactAndroid C++ API snapshot** accurately reflects only Android-relevant components, thereby improving the **purity and correctness of the Android API definition**.
This commit introduces a **new capability** to the **C++ API parser script** by adding a `--xml` command-line flag. This flag allows developers to **persist Doxygen XML artifacts** generated during the snapshot creation process, which were previously deleted automatically. The change primarily affects the `scripts/cxx-api/parser/__main__.py` module, specifically within the `main` and `build_snapshots` functions. This **developer tooling enhancement** provides a crucial mechanism for **debugging** and **analyzing** the Doxygen output, improving the development workflow for C++ API documentation.
This commit implements a **bug fix** within the **Bridging module** of `ReactCommon`, specifically addressing the `fromJs` static method. It **corrects the return type** for `Bridging<std::pair<T1, T2>>::fromJs` from `std::pair<T1, T1>` to the semantically accurate `std::pair<T1, T2>`. This change ensures that the C++ bridging layer can correctly convert JavaScript arrays into `std::pair` objects with potentially different element types, thereby improving **type safety and correctness** for the C++ API. The updated API snapshots across various platforms reflect this essential **API correction**, preventing potential type mismatches in downstream C++ code.
This commit performs a **maintenance cleanup** by **removing leaked test code** from the project's **C++ API snapshots**. It achieves this by updating the `scripts/cxx-api/config.yml` configuration file to explicitly **exclude test-related files** during the snapshot generation process. This change specifically impacts the C++ API snapshots for **ReactCommon**, **ReactAndroid**, and **ReactApple**. The primary goal is to ensure these critical API definitions are clean and free from unnecessary internal test artifacts, improving the integrity and relevance of the generated snapshots.
This commit **refactors** the **C++ public API parser** by renaming the command-line flag `--check` to `--validate` for improved **consistency** with the JS API command structure. This change affects the `scripts/cxx-api/parser/__main__.py` script, where the argument is updated, and the `scripts/cxx-api/parser/snapshot_diff.py` module, where the internal function `check_snapshots` is renamed to `validate_snapshots`. The primary purpose is to standardize the command for verifying that the C++ public API snapshot is in sync with the actual API surface. Users of the `cxx-api` parser will now need to use the `--validate` flag, a change reflected in the updated `scripts/cxx-api/README.md` documentation.
This commit introduces a **maintenance improvement** by **excluding stub files** from the **C++ public API snapshot generation**. It updates the `scripts/cxx-api/config.yml` to incorporate a new exclusion pattern, preventing these irrelevant files from being included in the snapshot. This refinement ensures that the **public API surface representation** is more accurate and focused, providing a cleaner and more relevant **internal API documentation** for developers consuming the C++ modules.
Initial commit of Cxx API snapshots (#56152)
This commit **updates the React Native Android C++ API snapshot configuration** to **exclude** the `InputAccessory` component. As `InputAccessory` is an **iOS-only component** with no Android support, its inclusion in the Android C++ API snapshot was redundant. This **maintenance change** modifies `scripts/cxx-api/config.yml` to prevent the component from being generated in the Android API definition. The exclusion **streamlines the Android C++ API** and **improves the accuracy** of the generated snapshot by removing irrelevant platform-specific elements.
This commit **updates the configuration for the C++ public API snapshotting tool** to **exclude symbols prefixed with `Experimental`**. By modifying `scripts/cxx-api/config.yml`, the build process will now ignore these unstable interfaces when generating the public API snapshot. This **maintenance change** ensures that the **public C++ API surface** accurately reflects only stable and supported features, preventing external consumers from relying on experimental functionality that is subject to change or removal. The primary impact is **improved API stability and clarity** for developers integrating with the C++ core.
This commit performs **maintenance** on the **ReactAndroid C++ API snapshot generation** by **excluding iOS-specific symbols**. Previously, the Android codegen inadvertently included CxxSpec templates, data structs, and bridging structs from iOS native modules, which are irrelevant to the Android platform, within the `ReactAndroid` build artifact. This change updates `scripts/cxx-api/config.yml` to filter out these unnecessary platform-specific symbols. The primary impact is a **cleaner and more efficient ReactAndroid C++ API snapshot**, reducing its size and complexity by removing irrelevant code.
This commit performs **maintenance** by **excluding 'Fantom' symbols** from the **C++ public API snapshots** generated during the codegen process. It achieves this by updating the `scripts/cxx-api/config.yml` file to include 'Fantom' in the list of symbols to be filtered out. This ensures that the **React Native C++ public API** accurately reflects only the intended external interfaces, preventing internal or deprecated components from appearing in the generated snapshots. The change contributes to a cleaner and more precise definition of the public API surface.
This commit introduces a **new capability** to the **C++ API snapshot generation system** by enabling platform-specific symbol exclusions. It modifies the `scripts/cxx-api/parser/config.py` to support platform-level `exclude_symbols` in the configuration, which are then merged with global exclusions. As a direct application, this **refinement** updates the `scripts/cxx-api/config.yml` to **exclude Android-specific symbols** from the `ReactApple` C++ API snapshots. This ensures that the `ReactAppleDebugCxx.api` and `ReactAppleReleaseCxx.api` files accurately represent only Apple-relevant interfaces, improving the clarity and correctness of the API definitions for **Apple platform development**.
Remove feature flags from the C++ public API snapshots (#56245)
This commit **enhances developer tooling** by introducing convenient **npm aliases** for executing the `cxx-api` snapshot generation and validation scripts. Specifically, it adds `cxx-api-build` to run `python -m scripts.cxx-api.parser` and `cxx-api-validate` for `python -m scripts.cxx-api.parser --check`, simplifying the process of managing **C++ API snapshots**. Additionally, a JavaScript wrapper is provided for the Buck equivalent, further streamlining the build and validation workflow for **C++ modules**. This **tooling improvement** makes it easier for developers to maintain consistency and correctness in the C++ API.