wanted-node-version

Detects which version of Node your program should be using, by looking at .nvmrc, .node-version and the engines.node field of package.json.

Installation

npm install wanted-node-version --save

Usage

const wantedNodeVersion = require('wanted-node-version');
 
const versionInfo = wantedNodeVersion(process.cwd());
 
console.log(versionInfo);

Outputs:

{ sources:
   { '.nvmrc': '8',
     '.node-version': '9.0.0',
     'engines.node': '>=8' },
  version: '8',
  conflict: true }

• The sources property is an object that contains the version-range that was set for each source.
• The version property is a string containing the wanted node version-version from the first of nvmrc, node-version, engines.node (in that order).
• The conflict property tells you if all version ranges found are in conflict (true) or not (false).

See also

To further deal with version-range strings, I recommend using the excellent semver module.

License

MIT