Navigates the package.json dependencies and re-install them with exact version. Update and pin all current dependencies.

npm-install-exact.js

const Packages = require('./package.json');

const execPromise = (cmd) => new Promise((resolve) => {
    require('child_process').exec(cmd, (error, stdout, stderr) => {
        if (error) {
            console.warn(error);
        }
        resolve(error ? `${cmd} failed with error: \n${stderr}\n` : `${cmd} completed.`);
    });
});

const installDependency = (name, dev = false) => {
    console.log(`npm install ${dev ? '-D' : ''} -E ${name}`);
    return execPromise(`npm install ${dev ? '-D' : ''} -E ${name}`);
}

(async () => {
    const devDependencies = Packages.devDependencies || {};
    const dependencies = Packages.dependencies || {};

    console.log(`Installing dev dependencies...`);
    console.log(await installDependency(Object.keys(devDependencies).join(' '), true));
    console.log(`Installing prod dependencies: ${dep}`);
    console.log(await installDependency(Object.keys(dependencies).join(' ')));
})();

Inspired from: https://gist.github.com/kentcdodds/e3f79584d7f255fbcf29

The main difference here is this will have npm do one final installation/update before pining the dependencies.