Node.js Compiler Collection
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Latest commit f7bc7a0 Dec 11, 2018


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Simple CLI for compiling a Node.js module into a single file, together with all its dependencies, gcc-style.


  • Publish minimal packages to npm
  • Only ship relevant app code to serverless environments
  • Don't waste time configuring bundlers
  • Generally faster bootup time and less I/O overhead
  • Compiled language-like experience (e.g.: go)

Design goals

  • Zero configuration
  • TypeScript built-in
  • Only supports Node.js programs as input / output
  • Support all Node.js patterns and npm modules



npm i -g @zeit/ncc


$ ncc build input.js -o dist

Outputs the build of input.js into dist/index.js.

$ ncc run input.js

Build to a temporary folder and run the built JS file through Node.js, with source maps support for debugging.

With TypeScript

The only requirement is to point ncc to .ts or .tsx files. A tsconfig.json file is necessary. Most likely you want to indicate es2015 support:

  "compilerOptions": {
    "target": "es2015",
    "moduleResolution": "node"

Programmatically From Node.js

require('@zeit/ncc')('/path/to/input', {
  minify: true, // default
  // externals to leave as requires of the build
  externals: ["externalpackage"],
  sourceMap: true // default
}).then(({ code, assets }) => {
  // assets is an object of asset file names to sources
  // expected relative to the output code (if any)


  • Files / assets are relocated based on a static evaluator. Dynamic non-statically analyzable asset loads may not work out correctly