Cannot find name 'console' Error in TypeScript

Cannot find name 'console' Error in TypeScript #

To solve the "Cannot find name console" error, install the node types if running in Node.js by running npm i -D @types/node, or include dom in the lib array in your tsconfig.json file if your code is run in the browser.

If your runtime is Node.js, make sure to install the typings for node, by opening your terminal in your project's root directory and running the following command:

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npm i -D @types/node

Your error should be resolved if your runtime is Node.js.

If it is not, make sure the types array in your tsconfig.json file contains "node".

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{
  "compilerOptions": {
    "types": [
      // ... your other types
      "node"
    ],
  },
}

If your code is run in the browser or the solutions above did not resolve your error, add dom to the lib array in your tsconfig.json file.

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{
  "compilerOptions": {
    "lib": [
      // ... your other libs
      "dom"
    ],
    // ... rest

  },
}

This should fix the error if running your code in the browser.

If the error is not resolved, try to delete your node_modules and package-lock.json files, re-run npm install and restart your IDE.

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rm -rf node_modules package-lock.json

npm install

Make sure to restart your IDE if the error persists. VSCode glitches often and a reboot solves things sometimes.

Conclusion #

To solve the "Cannot find name console" error, install the node types if running in Node.js by running npm i -D @types/node, or include dom in the lib array in your tsconfig.json file if your code is run in the browser.