npm-module-tutorial/readme.md

An educational npm module demonstrating the fundamental steps of creating and publishing a Node.js package.

## Steps to make npm package
* Signup https://www.npmjs.com/signup
* Decide npm package which is not available on npm registry and put as package-name in package.json 
* create custom importable module
* npm init -y
* index.js
`function helloNpmWorld() {
  return "hello NPM World"
}
module.exports = helloNpmWorld`
#### Testing
* `npm link` to make package available globally
* create test.js in test folder `const helloNpm = require('package-name')
console.log(helloNpm())`.
* `npm link npm-module-tutorial` will create node_module and package-name in it.
* run `node test.js`

#### Publish npm package
* `npm login`
* `npm publish`

#### rePublish npm package 
* update Patch, Minor or Major version to republish
*  `npm publish`

## Scoped npm package
* `npm init --scope=@your-username`
* package name `@your-username/package-name`
* `npm publish --access public`
* `npm publish --access private`

## Deprecate npm package
* `npm deprecate npm-module-tutorial@"< 2.0.0" "critical bug fixed in v2.0.0"`
* When will you try to install 1.0.0 npm will warn "npm warn deprecated npm-module-tutorial@1.0.0: critical bug fixed in v2.0.0" in terminal