File that takes all devDeps and deps from package.json and uninstalls them and reinstalls them. Sometimes this is necessayr to clean out your yarn slate and start fresh.

reinstall.js

#!/usr/bin/env node

// normally this file goes in bin/reinstall.js
// called by "reinstall": "node bin/reinstall.js"

const { promisify } = require('util');
const exec = promisify(require('child_process').exec);

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

const { dependencies, devDependencies } = pkg;

function generateYarnAddScript(dev = false) {
    let yarnScript = 'yarn add';
    const packages = dev ? devDependencies : dependencies;

    if (dev) {
        yarnScript += ' -D';
    }

    for (const nodePackage in packages) {
        if (packages.hasOwnProperty(nodePackage)) {
            const version = packages[nodePackage];

            yarnScript += ` ${nodePackage}@${version}`;
        }
    }

    return yarnScript;
}

function generateYarnRemoveScript(dev = false) {
    let yarnScript = 'yarn remove';
    const packages = dev ? devDependencies : dependencies;

    Object.keys(packages)
        .forEach(nodePackage => {
            yarnScript += ` ${nodePackage}`;
        });

    return yarnScript;
}

function generateYarnScript(mode) {
    const dev = mode === 'dev' ? true : false;

    console.info(`Environment: ${mode}`);
    console.info(`Reinstalling: ${dev ? 'devDependencies' : 'dependencies'}`);

    const yarnRemove = generateYarnRemoveScript(dev);
    const yarnAdd = generateYarnAddScript(dev);

    return `${yarnRemove} && ${yarnAdd}`;
}

function readEnvironment() {
    const myArgs = process.argv.slice(2);

    for (let i = 0; i < myArgs.length; i++) {
        if (myArgs[i].indexOf('D') > 0) {
            return 'dev';
        }
    }

    return 'prod';
}

async function reinstall() {
    const yarnScript = generateYarnScript(readEnvironment());

    console.info(`\nExecuting Script:\n\t${yarnScript}`);

    let error, stdout, stderr;

    try {
        ({ error, stdout, stderr } = await exec(yarnScript));
    } catch (err) {
        error = err;
    }

    if (error) {
        console.error(`\nEXEC ERROR:\t${error}`);

        return;
    }

    console.log(`\nSTDOUT:\t${stdout}`);
    console.log(`\nSTDERR:\t${stderr}`);
    console.log('\nReinstall executed successfully!');
}

reinstall();