react-traits

Statically scan React/Next.js component files and report each component's traits (state, props, memoization, fetch, environment, etc.) plus the components it renders.

Installation

npm install react-traits

Usage

# List components and their traits
react-traits analyze 'app/components/**/*.tsx'

# Assert no component (or any component in its rendered subtree) calls fetch
react-traits check 'app/components/**/*.tsx' --assert-no-fetch

# JSON output
react-traits analyze 'app/components/**/*.tsx' --json

Options

Global options (available on all subcommands):

• --root <path> — repo root (default: .)
• --config <path> — config file path
• --json — emit JSON instead of text

check subcommand options

• --assert-no-fetch — exit non-zero if any component or its rendered subtree calls fetch

Configuration

Place a .no-mistakes.yaml or .react-traits.yaml at your repo root:

frontendRoot: app
reactTraits:
  assertNoFetch: true

License

MIT

See the documentation index, CLI reference, and AST analysis behavior for full behavior notes.