create-package-json.js

/**
 * Creates a package.json for the release NPM package structure.
 */
const fs = require('fs');
const path = require('path');

const basePkgJson = JSON.parse(fs.readFileSync('./package.json', 'utf8'));
const releasePkgJson = JSON.parse(fs.readFileSync('./package.release.json', 'utf8'));

// remove scripts
delete basePkgJson.scripts;

// remove devDependencies (as there are important for the sourcecode only)
delete basePkgJson.devDependencies;

// transform dependencies to peerDependencies for the release
basePkgJson.peerDependencies = Object.assign({}, basePkgJson.dependencies);
basePkgJson.dependencies = {};

// override and add keys for release
Object.keys(releasePkgJson).forEach(key => {
    basePkgJson[key] = releasePkgJson[key];
});

const filepath = path.join(__dirname, './bundles/package.json');
fs.writeFileSync(filepath, JSON.stringify(basePkgJson, null, 2), 'utf-8');