const fs = require('fs-extra');

// "package.json" comes from argv[2]
let nameOnly = false;
if (process.argv.length === 4) {
    nameOnly = (process.argv[2] === '--nameOnly');
    process.argv.shift();
}
const filename = process.argv[2];

// read package.json file
const packageJson = fs.readJsonSync(filename, {
    encoding: 'utf-8',
    reviver: null,
    throws: true
});

const depends = packageJson.dependencies;
const devDepends = packageJson.devDependencies;
const allDepends = Object.assign(depends, devDepends);
for (pkg in allDepends) {
    if (nameOnly) {
        console.log(pkg);
    } else {
        console.log(pkg, allDepends[pkg]);
    }
}