Angular Doctor

Diagnose and improve Angular codebases with a single command.

Angular Doctor scans your project for Angular-specific lint issues and dead code, then produces a 0–100 health score plus actionable diagnostics.

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✨ Features

• Angular-aware linting (components, directives, pipes, performance, architecture, TypeScript)
• Dead code detection (unused files, exports, types) via knip
• Workspace support (Angular CLI + npm/pnpm workspaces)
• Diff mode to scan only changed files
• Markdown reports for sharing results

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✅ Quick start

Run at your Angular project root (or workspace root):

npx -y angular-doctor@latest .

Generate a Markdown report in the current directory:

npx -y angular-doctor@latest . --report .

Show affected files and line numbers:

npx -y angular-doctor@latest . --verbose

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🤖 Install for your coding agent

Teach your coding agent to run Angular Doctor automatically after every Angular change:

curl -fsSL https://raw.githubusercontent.com/antonygiomarxdev/angular-doctor/main/install-skill.sh | bash

Supports Cursor, Claude Code, Windsurf, Amp Code, Codex, Gemini CLI, and OpenCode.

Once installed, your agent will automatically run:

npx -y angular-doctor@latest . --verbose --diff

…after making Angular changes, catching issues before they reach review.

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🧭 Workspace support

Angular Doctor automatically detects multiple projects:

• Angular CLI workspaces — reads angular.json and scans each project inside projects/
• npm / pnpm workspaces — detects packages with @angular/core from workspaces or pnpm-workspace.yaml

When multiple projects are found:

• Interactive mode: prompts for which projects to scan
• Non-interactive mode (-y, CI): scans all detected projects

Target a specific project (comma-separated for multiple):

npx -y angular-doctor@latest . --project my-app,my-lib

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⚙️ CLI Options

Usage: angular-doctor [directory] [options]

Options:
  -v, --version         display the version number
  --no-lint             skip linting
  --no-dead-code        skip dead code detection
  --verbose             show file details per rule
  --score               output only the score
  --report [path]       write a markdown report (optional output path)
  --fast                speed up by skipping dead code and type-aware lint
  -y, --yes             skip prompts, scan all workspace projects
  --project <name>      select workspace project (comma-separated for multiple)
  --diff [base]         scan only files changed vs base branch
  -h, --help            display help for command

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📝 Reports

Use --report to write a Markdown report:

• --report writes to the diagnostics temp folder
• --report . writes to the current project directory
• --report ./reports writes to a custom folder
• --report ./reports/scan.md writes to a specific file

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🔧 Configuration

Create an angular-doctor.config.json in your project root:

{
  "ignore": {
    "rules": ["@angular-eslint/prefer-standalone"],
    "files": ["src/generated/**"]
  }
}

Or use the angularDoctor key in package.json:

{
  "angularDoctor": {
    "ignore": {
      "rules": ["@angular-eslint/prefer-standalone"]
    }
  }
}

Config options

Key	Type	Default	Description
ignore.rules	string[]	[]	Rules to suppress using the plugin/rule format
ignore.files	string[]	[]	File paths to exclude, supports glob patterns
lint	boolean	true	Enable/disable lint checks
deadCode	boolean	true	Enable/disable dead code detection
verbose	boolean	false	Show file details per rule
diff	`boolean	string`	—

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📦 Node.js API

import { diagnose } from "angular-doctor/api";

const result = await diagnose("./path/to/your/angular-project");

console.log(result.score);       // { score: 82, label: "Great" }
console.log(result.diagnostics); // Array of Diagnostic objects
console.log(result.project);     // Detected framework, Angular version, etc.

Each diagnostic has the following shape:

interface Diagnostic {
  filePath: string;
  plugin: string;
  rule: string;
  severity: "error" | "warning";
  message: string;
  help: string;
  line: number;
  column: number;
  category: string;
}

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🧪 What it checks

Components

• Missing Component / Directive class suffixes
• Empty lifecycle methods
• Missing lifecycle interfaces
• Pipe not implementing PipeTransform

Performance

• Missing OnPush change detection strategy
• Outputs shadowing native DOM events

Architecture

• Conflicting lifecycle hooks (DoCheck + OnChanges)
• Use of forwardRef
• Renamed inputs/outputs
• Inline inputs/outputs metadata properties
• Non-standalone components (Angular 17+)

TypeScript

• Explicit any usage

Dead Code

• Unused files
• Unused exports and types

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💡 Inspiration

Inspired by react-doctor.

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📄 License

MIT