Npm install cannot find module 'semver'

In-depth troubleshooting guide

Node.js Reinstallation Party

If npm seems to have lost its semver key, it can help to completely reinstall Node.js. It might just find the key under the couch cushions.

sudo rm -rf /usr/local/lib/node_modules //say goodbye to the old mess!
sudo rm -rf ~/.npm //away with you, gremlins!
brew uninstall --force node //throw out the old furniture!
brew install node //welcome new, comfy sofa!
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Handle with care: File and Folder Permissions

Windows user? You may need to deal with permission issues when installing NodeJS.

# Follow npm's official guide on this. Trust me, it's easier than arguing with the bouncer at a nightclub.
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Call in the Rescue Team: Yarn

When nothing seems to be working, another package manager could solve the problem. Yarn can be a reliable substitute for npm.

npm install -g yarn  // So you're a yarn person now, huh?
yarn global add npm  // Just like adopting a new puppy when your old one won't behave.
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Shake it off: Fresh Server Connection

Sometimes npm acts up if all you've done is coding and not taken a break. Try this:

# Reconnect to the server. Just like how sometimes you have to restart your router for Wi-Fi to work.
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Back to Basics: Default Repositories

Wherever possible, use default system repositories for installing Node.js and npm. They're like the comfort food of code.

# After all, mom's recipes are always best, right?
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Up To Date: Node.js' Latest Hits

Ensure you only have the latest version of node installed on your system. Outmoded Node.js versions are like, so yesterday.

brew upgrade node //Because staying fresh is what cool kids do.
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Troubleshooting Extras: Prolonged Care for Your npm

Smile Check: Node and npm versions

After installing, why not flex those version "muscles"?

node --version
npm --version // 💪 Feeling strong?
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Running these commands ensures your npm and Node.js stayed at the gym.

Vacuum the Room: Clean Global Node Modules

sudo rm -rf /usr/local/lib/node_modules //Because cleanliness is next to godliness.
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Cleaning your room (of modules) will give you peace of mind (and less errors).

Consider Yarn: Yes, that Fluffy Thing

Consider using yarn for package management if all else fails.

npm install -g yarn // Embrace the fluffiness of Yarn... soft, manageable, error-free.
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Stay in the Loop: Don't be a Caveman

From time to time, stay posted with the latest about npm and Node.js. You wouldn't want to miss any cool new tricks, right?