The React app failed to compile on just my computer

Attempting to launch a React app using npm start results in a slew of errors related to the types: no-undef and no-restricted-globals. Strangely, the code compiles and runs perfectly fine on my colleagues' machines!

I've synced up my npm and node versions with those on the other computers, but I'm still encountering the same issue.

Any thoughts on where else besides the versions this problem could be stemming from?

Below are all the errors:

Failed to compile.

// List of specific errors for each component
reactjsnpm

Answer №1

undefined no-undef indicates that a variable is not declared or imported. For example, PropTypes require an import statement like 

import PropTypes from 'prop-types';
. If you have done this, ensure that you have already executed npm install.

Alternatively, you can try reinstalling dependencies. Delete the node_modules folder, then run npm cache clean and finally execute npm install.

Answer №2

Many thanks to all those who tried to assist me in resolving my issue. As it turns out, the problem was related to linting! It appears that create-react-scripts has its own linting system. Upon installing eslint, the errors transformed into warnings, specifically from not defined to not used. Despite this, the application is functioning properly and I can manage removing any unused variables.

Once again, thank you!

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