burn0 dev

Runs your app with burn0 preloaded — no code changes needed.

npx burn0 dev -- node app.js
npx burn0 dev -- npm start
npx burn0 dev -- next dev

How it works

burn0 dev uses Node.js --require to preload burn0 before your app starts. This means:

No import '@burn0/burn0' needed in your code
Works with any Node.js app
Cost tracking is active for the entire process

Examples

# Run a Node.js script
npx burn0 dev -- node server.js

# Run an npm script
npx burn0 dev -- npm run start

# Run Next.js dev server
npx burn0 dev -- npx next dev

# Run with tsx
npx burn0 dev -- npx tsx src/index.ts

When to use `burn0 dev` vs `import`

Approach	Best for
`import '@burn0/burn0'`	Production, permanent tracking
`burn0 dev -- ...`	Quick testing, no code changes

Use burn0 dev when you want to try burn0 on an existing project without modifying any files. Use the import approach when you want permanent cost tracking.