var packageJson = require( "../../package.json" ); var semver = require( "semver" ); // Note argv[0] is supposed to be `node`, argv[1] to be this file. var next = process.argv[ 2 ]; var prereleaseIdentifier = process.argv[ 3 ]; console.log( semver.inc( packageJson.version, next, prereleaseIdentifier ) );