NODE #node #nodejs #packagejson

npm-commands

// create a package.json file asking for
// - name (node)
// - version (1.0.0)
// - description ()
// - author ()
npm init

// version of npm installed
npm -v

// update version of npm
npm install npm -g

// look for package.json and install modules
npm install

// install the node package locally into the machine, it will be executable with package.json bin parameter
npm install -g

//install module globally
npm install <module> -g

//install module in the current directory
npm install <module>

//install module and save it to the package.json dependencies
npm install --save <module>

//install module and save it to the package.json devDependencies
npm install --save-dev <module>

//delete module from package.json and node_modlues/
npm uninstall <module>


//search module name into the repository
npm search <module> 

//list of global node modules installed
npm list --global
npm list --global --depth=0

//cleaning cache of node (because node the first time it installs a module, it keeps locally a copy of it, specifically that version)
npm cache clean


// login in npm registry with username, password and public email
npm login

// publish or update in npm registries an npm package
npm publish

npm-package.json

{
    "name": "Application",
    "version": "1",
    "description": "Description",
    "author": "Author",
    "dependencies": {
        "module1": "latest",
        "module2": "1.8.7",
        "module3": "~1",
        "module4": "~1.8",
        "module5": "~1.8.7"
    }
}

npm-package.json.txt

"module1": "latest",    # latest version from github repository
"module2": "1.8.7",     # major version . minor version . patch version 
"module3": "~1",        # 1.0.0 <= version < 2.0.0
"module4": "~1.8",      # 1.8.7 <= version < 1.9.0
"module5": "~1.8.7"     # 1.8.7 <= version < 1.9.0 safe version