react-compiler-marker

react-compiler-marker

CLI for generating React Compiler reports. Scan your project to see which components are optimized by the React Compiler and which have issues.

Usage

npx react-compiler-marker [options] [directory]

Requirements: babel-plugin-react-compiler must be installed in your project.

Examples

# Text summary (default)
npx react-compiler-marker .

# Interactive HTML report
npx react-compiler-marker --format html .

# HTML report saved to file
npx react-compiler-marker --format html --output report.html .

# JSON for CI pipelines
npx react-compiler-marker --format json . > report.json

# Custom extensions and excludes
npx react-compiler-marker --include-extensions .tsx,.ts --exclude-dirs node_modules,dist .

Options

Option	Description	Default
--format <format>	Output format: text, html, json	text
--output <path>	Write output to a file instead of stdout	stdout
--exclude-dirs <dirs>	Comma-separated directories to exclude	node_modules,.git,dist,build,out,coverage,.next,.turbo
--include-extensions <exts>	Comma-separated file extensions to include	.js,.jsx,.ts,.tsx,.mjs,.cjs
--babel-plugin-path <path>	Path to babel-plugin-react-compiler	Auto-detected from node_modules
--help	Show help message
--version	Show version number

Output Formats

Text (default)

React Compiler Report
========================================
Files scanned:      120
Files with results: 85
Compiled (success): 200
Failed:             12

Failures:
----------------------------------------
  src/components/Foo.tsx:42 - MyComponent: (BuildHIR::lowerStatement) Handle TryStatement
  src/screens/Bar.tsx:15 - (anonymous): Mutating a variable after render

HTML

Self-contained interactive report with filtering, search, and a tree view. When no --output is specified, opens automatically in your browser.

JSON

Full report data for programmatic use and CI integration.

CI Usage

The CLI exits with code 1 if any compilation failures exist, making it useful in CI pipelines:

npx react-compiler-marker --format json --output report.json . || echo "Compilation failures found"

License

MIT