Ownership is measured by how many commits each author made to each file in the current tree. It highlights bus-factor risk (files only one person has ever touched) and where knowledge is concentrated. The bus factor is the smallest number of people who are, between them, primary owner of more than half of the files.
Files only one author has ever changed. The more a file has changed, the more knowledge is at risk if that person leaves.
| File | Sole owner | Commits |
|---|---|---|
| .github/workflows/create-cherry-pick-pr.yml | Jake Bailey | 14 |
| tsc/internal/vfs/vfs_test.go | Jake Bailey | 12 |
| tsc/internal/checker/types_test.go | Jake Bailey | 9 |
| tsc/internal/vfs/osvfs/realpath_test.go | Jake Bailey | 9 |
| .github/workflows/close-issues.yml | Jake Bailey | 9 |
| tsc/internal/project/checkerpool_test.go | Jake Bailey | 8 |
| tsc/internal/vfs/osvfs/os_test.go | Jake Bailey | 7 |
| tsc/internal/bundled/libs/lib.dom.d.ts | Jake Bailey | 7 |
| tsc/internal/bundled/libs/lib.webworker.d.ts | Jake Bailey | 7 |
| tsc/internal/lsp/server_projectinfo_test.go | Jake Bailey | 6 |
| File | Sole owner | Commits |
|---|---|---|
| .github/workflows/create-cherry-pick-pr.yml | Jake Bailey | 14 |
| tsc/internal/vfs/vfs_test.go | Jake Bailey | 12 |
| tsc/internal/checker/types_test.go | Jake Bailey | 9 |
| tsc/internal/vfs/osvfs/realpath_test.go | Jake Bailey | 9 |
| .github/workflows/close-issues.yml | Jake Bailey | 9 |
| tsc/internal/project/checkerpool_test.go | Jake Bailey | 8 |
| tsc/internal/vfs/osvfs/os_test.go | Jake Bailey | 7 |
| tsc/internal/bundled/libs/lib.dom.d.ts | Jake Bailey | 7 |
| tsc/internal/bundled/libs/lib.webworker.d.ts | Jake Bailey | 7 |
| tsc/internal/lsp/server_projectinfo_test.go | Jake Bailey | 6 |
| tsc/internal/lsp/server_progress_test.go | Jake Bailey | 5 |
| tsc/internal/vfs/vfsmatch/vfsmatch_test.go | Jake Bailey | 5 |
| tools/go.mod | Jake Bailey | 5 |
| tools/go.sum | Jake Bailey | 5 |
| tsc/internal/transformers/estransforms/usestrict.go | Jake Bailey | 5 |
| tsc/internal/bundled/libs/lib.es2020.intl.d.ts | Jake Bailey | 5 |
| tsc/internal/bundled/libs/lib.es2020.bigint.d.ts | Jake Bailey | 5 |
| .github/skills/api-client/SKILL.md | Andrew Branch | 5 |
| tsc/cmd/tsc/lsp.go | Jake Bailey | 4 |
| tools/pipelines/steps/setup-node-npm-ci.yml | Jake Bailey | 4 |
| .github/actions/setup-go/action.yml | Jake Bailey | 4 |
| tsc/internal/fswatch/fsevents_darwin_ffi.go | Jake Bailey | 4 |
| tsc/internal/bundled/libs/lib.es2015.collection.d.ts | Jake Bailey | 4 |
| tsc/internal/parser/testdata/fuzz/FuzzParser/02b74efe61495c2a | Jake Bailey | 4 |
| tsc/internal/parser/testdata/fuzz/FuzzParser/9ce2d994c65c7bfe | Jake Bailey | 4 |
| tsc/testdata/baselines/reference/compiler/subpathImportDeclarationEmit.symbols | Jake Bailey | 4 |
| tsc/internal/bundled/libs/lib.es2015.iterable.d.ts | Jake Bailey | 4 |
| tsc/internal/bundled/libs/lib.dom.iterable.d.ts | Jake Bailey | 4 |
| tsc/internal/bundled/libs/lib.es2017.sharedmemory.d.ts | Jake Bailey | 4 |
| tsc/internal/bundled/libs/lib.es2022.intl.d.ts | Jake Bailey | 4 |
| tsc/internal/bundled/libs/lib.webworker.iterable.d.ts | Jake Bailey | 4 |
| packages/typescript/src/vscode/extensionApi.ts | Andrew Branch | 4 |
| tools/customlint/plugin.go | Jake Bailey | 3 |
| tsc/cmd/tsc/sys.go | Jake Bailey | 3 |
| tsc/internal/checker/tracer_test.go | Jake Bailey | 3 |
| tsc/internal/tracing/tracing_test.go | Jake Bailey | 3 |
| tsc/internal/vfs/vfsmatch/bench_test.go | Jake Bailey | 3 |
| tsc/internal/vfs/vfsmock/wrapper_test.go | Jake Bailey | 3 |
| tools/pipelines/steps/setup-vsce.yml | Jake Bailey | 3 |
| tools/pipelines/localization-update.yml | Jake Bailey | 3 |
| tools/pipelines/steps/create-github-app-token.yml | Jake Bailey | 3 |
| tsc/internal/diagnostics/diagnostics_test.go | Jake Bailey | 3 |
| tsc/internal/fswatch/README.md | Jake Bailey | 3 |
| tsc/internal/fswatch/fsevents_darwin_ffi.s | Jake Bailey | 3 |
| tsc/internal/lsp/lsproto/structcodec.go | Jake Bailey | 3 |
| NOTICE.txt | Jake Bailey | 3 |
| go.work | Jake Bailey | 3 |
| tsc/internal/lsp/progress_test.go | Jake Bailey | 3 |
| .git-blame-ignore-revs | Jake Bailey | 3 |
| tsc/internal/fourslash/tests/quickinfoVerbosityNamespaceInterfaceHeritageCrash_test.go | Jake Bailey | 3 |
| tsc/internal/fourslash/tests/quickinfoVerbosityNamespaceInterfaceHeritageIntersectionCrash_test.go | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/fourslash/findAllReferences/findAllRefsCommonJsRequire.baseline.jsonc | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/lsp/stackSanitizer/genericSecretWorkaround.md | Jake Bailey | 3 |
| tsc/internal/fourslash/tests/documentHighlightImportPath_test.go | Jake Bailey | 3 |
| tsc/internal/fourslash/tests/goToDefinitionPreferSourceDefinition_test.go | Jake Bailey | 3 |
| tsc/internal/fourslash/tests/hoverAliasInImportedFile_test.go | Jake Bailey | 3 |
| tsc/internal/fourslash/tests/unreachableCodeDiagnostics_test.go | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2018.intl.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2015.core.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2015.symbol.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2017.string.d.ts | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/automaticTypeDirectiveResolutionBundler.symbols | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/automaticTypeDirectiveResolutionBundler.types | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/blockedScopeVariableNotUnused1.js | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/blockedScopeVariableNotUnused1.symbols | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/blockedScopeVariableNotUnused1.types | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/declarationEmitExpandoArrowFunctionParameter.js | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/declarationEmitExpandoArrowFunctionParameter.symbols | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/deduplicatePackages(deduplicatepackages=false).errors.txt | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/deduplicatePackages(deduplicatepackages=false).js | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/deduplicatePackages(deduplicatepackages=false).symbols | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/deduplicatePackages(deduplicatepackages=false).types | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/deduplicatePackages(deduplicatepackages=true).errors.txt | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/deduplicatePackages(deduplicatepackages=true).js | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/deduplicatePackages(deduplicatepackages=true).symbols | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/deduplicatePackages(deduplicatepackages=true).types | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/packageDeduplicationDuplicateGlobals.js | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/packageDeduplicationDuplicateGlobals.symbols | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/subpathImportDeclarationEmit.types | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/subpathImportsJS.js | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/subpathImportsJS.symbols | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/subpathImportsJS.types | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/superCallInJSWithWrongBaseTypeArgumentCount2(strict=false).errors.txt | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/conformance/typeTagForMultipleVariableDeclarations.errors.txt | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2020.symbol.wellknown.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2022.regexp.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.esnext.intl.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2015.symbol.wellknown.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2016.intl.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2017.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2020.sharedmemory.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2020.string.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2021.intl.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2021.weakref.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2022.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2022.error.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2023.array.d.ts | Jake Bailey | 3 |
| tsc/internal/bundled/libs/lib.es2024.sharedmemory.d.ts | Jake Bailey | 3 |
| tsc/testdata/baselines/reference/compiler/exportAssignmentMerging6.symbols | Anders Hejlsberg | 3 |
| tsc/testdata/baselines/reference/compiler/exportAssignmentMerging6.types | Anders Hejlsberg | 3 |
Primary owner = the author with the most commits to a file. Solely owned = files only that author has touched.
| Author | Files owned | Solely owned | Files touched |
|---|---|---|---|
| Jake Bailey | 63,098 | 60,809 | 64,104 |
| Cameron | 709 | 709 | 976 |
| Oleksandr Tarasiuk | 611 | 380 | 1,173 |
| Copilot | 600 | 477 | 1,174 |
| Andrew Branch | 462 | 340 | 1,165 |
| Ryan Cavanaugh | 450 | 443 | 479 |
| Mateusz Burzyński | 386 | 235 | 531 |
| Wesley Wigham | 328 | 221 | 617 |
| Gabriela Araujo Britto | 294 | 176 | 1,318 |
| Sheetal Nandi | 241 | 80 | 705 |
| Anders Hejlsberg | 189 | 161 | 660 |
| John Favret | 185 | 82 | 390 |
| navya9singh | 52 | 25 | 106 |
| graphemecluster | 44 | 14 | 51 |
| Daniel Rosenwasser | 42 | 41 | 203 |
| Ron Buckton | 21 | 5 | 109 |
| Isabel Duan | 19 | 13 | 228 |
| Nathan Shively-Sanders | 16 | 12 | 103 |
| xu0o0 | 14 | 11 | 45 |
| Daniel Lockyer | 14 | 14 | 15 |
| Dayong Lee | 10 | 10 | 12 |
| udit | 8 | 5 | 19 |
| Eugene Kalinin | 8 | 8 | 11 |
| Shooks | 8 | 8 | 9 |
| Max Schwenk | 7 | 4 | 16 |
Files touched by the most people — shared code where changes are most likely to need coordination.
| File | Contributors | Primary owner | Owner share |
|---|---|---|---|
| tsc/internal/checker/checker.go | 45 | Anders Hejlsberg | 25.1% |
| package.json | 42 | Jake Bailey | 26.6% |
| README.md | 42 | Wesley Wigham | 12.3% |
| CONTRIBUTING.md | 36 | Daniel Rosenwasser | 16.9% |
| .gitignore | 27 | Wesley Wigham | 18.5% |
| tsc/internal/compiler/program.go | 23 | Jake Bailey | 39.6% |
| tsc/internal/ast/utilities.go | 23 | Anders Hejlsberg | 21.1% |
| tsc/internal/ast/ast.go | 21 | Jake Bailey | 22.8% |
| tsc/internal/parser/parser.go | 21 | Jake Bailey | 24.8% |
| tsc/internal/checker/utilities.go | 20 | Jake Bailey | 26.9% |
| tsc/internal/scanner/scanner.go | 20 | Jake Bailey | 29.9% |
| tsc/internal/tsoptions/tsconfigparsing.go | 20 | Jake Bailey | 24.4% |
| tsc/internal/ls/completions.go | 19 | Gabriela Araujo Britto | 24.8% |
| tsc/internal/checker/relater.go | 19 | Anders Hejlsberg | 38.9% |
| tsc/internal/lsp/server.go | 18 | Jake Bailey | 44.8% |
| tsc/internal/printer/printer.go | 18 | Jake Bailey | 23.4% |
| tsc/internal/checker/nodebuilderimpl.go | 18 | Jake Bailey | 39.8% |
| tsc/internal/transformers/declarations/transform.go | 18 | Wesley Wigham | 28.2% |
| package-lock.json | 17 | TypeScript Bot | 85.0% |
| tsc/internal/api/session.go | 17 | Andrew Branch | 46.9% |
How TypeScript compares with other open source web frontend projects →
How TypeScript ranks among open source web frontend projects by AI-assisted commits →
Generate this report for your own repository with gitstats-action · All Gallery reports
Publishes the report to GitHub Pages on every push to main: turn on Pages for the gh-pages branch.
# .github/workflows/gitstats.yml
name: GitStats Report
on:
push:
branches: [main]
permissions:
contents: write
jobs:
gitstats:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v7
with:
fetch-depth: 0
- uses: shenxianpeng/gitstats-action@v1
with:
deploy-to-pages: true