Npm Vs Yarn

 Fetching packages

• npm: npm fetches dependencies from the npm registry during every ‘npm install‘ command.
• Yarn: yarn stores dependencies locally, and fetches from the disk during a ‘yarn add‘ command (assuming the dependency(with the specific version) is present locally).

Commands changed in yarn after npm

COMMAND	NPM	YARN
Install dependencies	npm install	yarn
Install package	npm install package_name npm install package_name@version_number	yarn add package_name yarn add package_name@version_number
Uninstall package	npm uninstall package_name	yarn remove package_name
Install dev package	npm install package_name –save-dev	yarn add package_name –dev
Update dev package	npm update package_name npm update package_name@version_number	yarn upgrade package_name yarn upgrade package_name@version_number
View package	npm view package_name	yarn info package_name
Global install package	npm install -g package_name	yarn global add package_name

Commands same for npm and yarn:

NPM	YARN
npm init	yarn init
npm run [script]	yarn run [script]
npm list	yarn list
npm test	yarn test
npm link	yarn link
npm login or logout	yarn login or logout
npm publish	yarn publish