Node.js

// show global packages location
$ npm root -g

$ npm install -g npm-check-updates
$ ncu -u
$ npm install

packages.json

"engines": {
    "node": ">=12.13.1",
    "npm": ">=6.13.4"
  },

.npmrc

engine-strict=true

// Disable asking for money
$ npm config set fund false --location=global

// Specify registry
$ npm config set registry https://registry.npmjs.org/

$ npm get registry

$ npm config list

// example how to add your repo
$ vi .npmrc

registry=http://mylib.ru:8081/repository/npm-public-repo/

// If yarn will not create node_modules folder create with next content
$ vi .yarnrc.yml

nodeLinker: node-modules