How to specify/enforce a specific node.js version to use in package.json?

Question

I am searching for a way to break the build, if a user is using a different node.js version as defined in the project.

Ideally to put some checks in grunt or bower or np

Answer 1

"engineStrict" has been removed and "engines" only works for dependencies. If you want to check Node's runtime version this can work for you:

You call this function in your server side code. It uses a regex to check Node's runtime version using eremzeit's response It will throw an error if it's not using the appropriate version:

const checkNodeVersion = version => {
  const versionRegex = new RegExp(`^${version}\\..*`);
  const versionCorrect = process.versions.node.match(versionRegex);
  if (!versionCorrect) {
    throw Error(
      `Running on wrong Nodejs version. Please upgrade the node runtime to version ${version}`
    );
  }
};

usage:

checkNodeVersion(8)