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The error “‘React’ was used before it was defined” is a common error that can show up in many ways. In this blog, we will go through some of the ways you can fix this issue. Read on.
How To Solve The Error “‘React’ was used before it was defined”?
To fix this error, simply disable the base rule as shown below. The second option is to downgrade @typescript-eslint to version 4.0.1. Your issue must now be resolved.
To fix this issue, simply add import/resolver to Eslint’s settings and, install eslint-import-resolver-typescript if necessary: yarn add -D eslint-import-resolver-typescript. If that doesn’t work, try setting “@typescript-eslint/no-use-before-define”: “off”. Your issue may now be resolved.
Option 1: Turn off the base rule
The base rule must be disabled. It’s similar to this.
“rules”: {
// note you must disable the base rule as it can report incorrect errors
“no-use-before-define”: “off”,
“@typescript-eslint/no-use-before-define”: [“error”]
}
Now, you have solved your problem.
Option 2: Downgrade @typescript-eslint
Simply downgrade @typescript-eslint to version 4.0.1
“@typescript-eslint/eslint-plugin”: “4.0.1”,
“@typescript-eslint/parser”: “4.0.1”,
Now, you have solved your problem.
Option 3: Include import/resolver in Eslint
Simply add import/resolver to Eslint’s settings
“settings”: {
“react”: { “version”: “detect” },
“import/resolver”: { “typescript”: {} }
}
Then, install eslint-import-resolver-typescript if necessary:
yarn add -D eslint-import-resolver-typescript.
If that doesn’t work, try setting:
“@typescript-eslint/no-use-before-define”: “off”.
similar to this:
“no-use-before-define”: “off”
Your issue may now be resolved.
Conclusion
We hope you enjoyed our article about the error. With this knowledge, we know that you can fix your “‘React’ was used before it was defined” error quickly by following these steps! If you still have any other questions about fixing this syntax error, please leave a comment below. Thank you for reading!
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