educative.io

Error with the map function

Courses
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#1

Parsing error: Cannot read property ‘map’ of undefined

this is the error I get when I try to npm start the code, is it an error with my eslint configuration, how do I solve it please?

#2

Hey @Yahya_Elfaqir

This error occurs because react-scripts is directly dependent on 2.xx range of @typescript-eslint/parser @typescript-eslint/eslint-plugin.

You can fix this issue by adding a resolutions field to your package.json as:

"resolutions": {
  "**/@typescript-eslint/eslint-plugin": "^4.1.1",
  "**/@typescript-eslint/parser": "^4.1.1"
}

If you still face any issues, feel free to ask.
Happy learning,