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npm uninstall -g <module_name> //to uninstall globally
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To uninstall a package you have previously installed locally:
npm uninstall <package-name>
To uninstall a package you have previously installed globally:
npm uninstall -g <package-name>
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// Node.js
// create package.json
% npm init
// install package
% npm install express --save
// Delete package
% npm uninstall express --save