Solve - Cannot find module 'commander' error in Node.js

Solve - Cannot find module 'commander' error in Node.js #

To solve the error "Cannot find module 'commander'", make sure to install the commander package by opening your terminal in your project's root directory and running the following command: npm install commander and restart your IDE and development server.

Open your terminal in your project's root directory (where your package.json file is located) and run the following command:

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npm install commander

If the error is not resolved, try restarting your IDE and your development server.

If you still get the error, try to delete your node_modules and package-lock.json (not package.json) files, re-run npm install and restart your IDE.

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# 👇️ delete node_modules and package-lock.json
rm -rf node_modules
rm -f package-lock.json

# 👇️ clean npm cache
npm cache clean --force

npm install

npm install commander@latest

If you need to be able to run commander from every directory on your machine, you have to install the module globally.

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# ✅ Install commander globally
npm install -g commander

# ✅ Create a symbolic link from the global package
# to node_modules/ of current folder
npm link commander

The npm link command creates a symbolic link from the globally installed package to the node_modules/ directory of the current folder.

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# 👇️ If you got permissions error, run with sudo
sudo npm install -g commander

npm link commander

If you use ts-node and write stand-alone executable subcommands in TypeScript files, you need to call your program through node to get the subcommands called correctly:

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node -r ts-node/register pm.ts

If you're still getting the "Cannot find module 'commander'" error, open your package.json file and make sure it contains the commander package in the dependencies object.

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{
  // ... rest
  "dependencies": {
    "commander": "^9.1.0",
  }
}

You can try to manually add the line and re-run npm install.

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npm install

Or install the latest version of the package:

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npm install commander@latest