Depcheck is a tool for analyzing the dependencies in a project to see: how each dependency is used, which dependencies are useless, and which dependencies are unused from package.json.
To identify the unused package, just run npx depcheck in the project root directory
> npx depcheck npx: installed 146 in 88.761s Unused dependencies * express-validator
Next step is to uninstall the npm packages using npm uninstall command.
> npm uninstall express-validator
npm WARN retina-backend@1.0.0 No repository field.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@2.1.2 (node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@2.1.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
removed 2 packages and audited 626 packages in 12.337s
24 packages are looking for funding
run `npm fund` for details
found 24150 vulnerabilities (24147 low, 3 high)
run `npm audit fix` to fix them, or `npm audit` for details
If you’d like to read more then iamdev.net is an excellent resource for all things Node / JS