package.json Script Explainer

Paste package.json and get a plain-English explanation of what each script actually runs - useful the first day in an unfamiliar repo.

Paste your package.json (or just the "scripts" object)

dev → next dev

Runs the Next.js dev command.

build → next build

Runs the Next.js build command.

typecheck → tsc --noEmit

Type-checks the project without emitting output files - a pure correctness check. Compiles TypeScript to JavaScript.

lint → eslint .

Lints the codebase with ESLint.

test → jest --coverage

Runs the test suite. Runs with code coverage collection enabled.

format → prettier --write .

Formats files in place with Prettier.

ci → npm run lint && npm run typecheck && npm run test

Runs multiple commands in sequence, stopping if any one fails.

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