npm update all packages. This script will update your dependencies and devDependencies on the latest version

npm-update-packages.py

## This script will update your dependencies and devDependencies on the latest version
## taking into account the versions that you need
## for example: "material-ui": "^1.0.0-beta.20" -> "^1.0.0-beta.21"
## LICENSE: MIT
## Author: Eduard Titov, [email protected]
## you can add to package.json "scripts": { "update:packages": "python3 npm-update-packages.py" }
## using: python3 npm-update-packages.py

import os
import json
import subprocess
import shutil


def removeLockFile():
    try:
        os.remove('./package-lock.json')
        print('package-lock.json removed')
    except OSError:
        pass

def removeNodeModules():
    try:
        shutil.rmtree('./node_modules')
        print('node_modules removed')
    except OSError:
        pass

def preapreVersions(obj):
    # for k in obj:
        # if obj[k][0] != '^':
            # obj[k] = "^{v!s}".format(v=obj[k])
    return obj

def restoreVersions(obj1, obj2):
    for k in obj2:
        if obj1[k] and obj1[k][0] == '^':
            obj2[k] = "^{v!s}".format(v=obj2[k])
    return obj2

def updateNpm(args):
    bashCommand = "npm update {0}".format(args)
    process = subprocess.Popen(bashCommand.split(), stdout=subprocess.PIPE)
    output, error = process.communicate()
    print(args, error, output)

def installPackages(packages, args):
    bashCommand = "npm install {0} {1}".format(" ".join(packages), args)
    process = subprocess.Popen(bashCommand.split(), stdout=subprocess.PIPE)
    output, error = process.communicate()
    print(args, error, output)


removeLockFile()
removeNodeModules()

with open('./package.json', 'r+') as json_data:
    d = json.load(json_data)
    d['dependencies'] = preapreVersions(d['dependencies'])
    d['devDependencies'] = preapreVersions(d['devDependencies'])

    json_data.seek(0)
    json.dump(d, json_data, indent=2)
    json_data.truncate()

    dependencies = d['dependencies']
    devDependencies = d['devDependencies']

    dependenciesList = list(dependencies.keys())
    devDependenciesList = list(devDependencies.keys())

    updateNpm('--save')
    print('npm dependencies updated')

    updateNpm('--save-dev')
    print('npm devDependencies updated')

    installPackages(dependenciesList, '--only=prod --save')
    print('npm dependencies installed first')

    installPackages(devDependenciesList, '--only=dev --save-dev')
    print('npm devDependencies installed first')

    json_data.close()

    with open('./package.json', 'r+') as json_new_data:
        d2 = json.load(json_new_data)
        d2['dependencies'] = restoreVersions(d['dependencies'], d2['dependencies'])
        d2['devDependencies'] = restoreVersions(d['devDependencies'], d2['devDependencies'])

        json_new_data.seek(0)
        json.dump(d2, json_new_data, indent=2)
        json_new_data.truncate()
        json_new_data.close()


    print('DONE')