microsoft/typescript
Grade a repo

97

/ 100

GradeA

A landmark open source project with strong engineering quality.

Top 4% of 5,156 graded repos

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

Documentation97
Engineering99
Health94
TypeScript109,401Apache-2.01mo ago

Outstanding. A score of 97/100 puts this repo in a very small tier of truly well-engineered projects.

Top fixes

Highest-impact changes first, ranked by point weight

3 to address
  1. 1
    Install and run instructions9pt

    Add a .env.example listing all required environment variables so contributors know what to set up.

  2. 2
    Reproducibility6pt

    Add a Dockerfile, .nvmrc, or .python-version to pin the runtime version and make the environment reproducible.

  3. 3
    Housekeeping3pt

    Remove them and add to .gitignore.

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Scorecard

Every check, grouped by category and sorted worst-first

Documentation

97

Install and run instructions9pt90

README documents how to install the project.

README12pt100

This repository is large enough that GitHub truncated the file tree. The scan is based on a partial file list, so some checks may under-report.

License6pt100

Licensed under Apache-2.0.

Contributing guide5pt100

Contributing guide is detailed and thorough.

Engineering

99

Reproducibility6pt90

Lockfile present (package-lock.json). Installs are reproducible.

Tests18pt100

Test files detected (scripts/eslint/tests).

CI/CD14pt100

CI is configured (.github/workflows/ci.yml).

Linting and formatting5pt100

Linter or formatter configured (.editorconfig).

Issue and PR templates6pt100

Issue or PR templates present.

Project health

94

Housekeeping3pt60

.gitignore present.

Dependency manifest6pt100

Dependency manifest found (package.json).

Repository metadata5pt100

Repository has a description.

Activity5pt100

Actively maintained (pushed within the last month).

Repository health signals

Activity, community, and responsiveness at scan time

Activity

  • 10 / 28
    Commits (30d / 90d)
  • 13,449
    Forks
  • 217
    Releaseslatest 10y ago

Community

  • 87% - Good
    Community health
  • 6 bus factor
    authors own >50% of commits
  • 109,401
    Watchers

Responsiveness

  • 6d 3h
    Median issue response
  • 5h
    Median PR merge time
  • 5,051
    Open issues
Repository files30 root entries
  • .devcontainer
  • .github
    Good: CI is configured (.github/workflows/ci.yml).
    Good: Dependabot covers 2 ecosystems (github-actions, devcontainers). Dependencies stay current.
    Good: Issue or PR templates present.
  • .vscode
  • bin
  • scripts
    Good: Test files detected (scripts/eslint/tests).
  • src
  • tests
    Issue: Build artifacts or local files may be committed (tests/baselines/reference/project/nodeModulesMaxDepthExceeded/amd/maxDepthExceeded/built/node_modules/m1) (−40 pts).Fix: Remove them and add to .gitignore.
  • .c8rc.json
  • .dprint.jsonc
  • .editorconfig
    Good: Linter or formatter configured (.editorconfig).
  • .git-blame-ignore-revs
  • .gitattributes
  • .gitignore
    Good: .gitignore present.
  • .gulp.js
  • AGENTS.md
  • azure-pipelines.release-publish.yml
  • azure-pipelines.release.yml
  • CLAUDE.md
  • CODE_OF_CONDUCT.md
    Good: Code of conduct present.
  • CONTRIBUTING.md
    Good: Contributing guide is detailed and thorough.
    Good: Contributing guide includes setup/install instructions.
    Good: Contributing guide describes code style expectations.
    Good: Contributing guide explains how to run tests.
    Good: Contributing guide describes the PR/review workflow.
    Good: Contributing guide includes code examples.
  • eslint.config.mjs
  • Herebyfile.mjs
  • knip.jsonc
  • LICENSE.txt
    Good: Licensed under Apache-2.0.
  • package-lock.json
    Good: Lockfile present (package-lock.json). Installs are reproducible.
  • package.json
    Good: Dependency manifest found (package.json).
  • README.md
    Good: README is present.
    Good: README is well structured with multiple sections.
    Good: README includes screenshots or visuals. Great for first impressions.
    Good: README has code examples.
    Good: README links to a live demo or deployed app.
    Good: README includes status badges.
    Good: README documents how to install the project.
    Good: README documents how to run the project.
  • SECURITY.md
    Good: Security policy present.
  • SUPPORT.md
  • ThirdPartyNoticeText.txt
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