eslint errors

[tsungtingdu]

• missing in props validation
• Static HTML elements with event handlers require a role
• Visible, non-interactive elements with click handlers must have at least one keyboard listener
• Unexpected lexical declaration in case block
• Unexpected dangling '_' in 'REDUX_DEVTOOLS_EXTENSION'
• Prefer default export
• A form label must be associated with a control

[tsungtingdu]

The react-scripts package provided by Create React App requires a dependency:

"eslint": "^6.6.0"

Don't try to install it manually: your package manager does it automatically. However, a different version of eslint was detected higher up in the tree:

/Users/canopus/Dropbox/workspace/0. Side Projects/heymd/node_modules/eslint (version: 7.9.0)

Manually installing incompatible versions is known to cause hard-to-debug issues.

If you would prefer to ignore this check, add SKIP_PREFLIGHT_CHECK=true to an .env file in your project. That will permanently disable this message but you might encounter other issues.

To fix the dependency tree, try following the steps below in the exact order:

1. Delete package-lock.json (not package.json!) and/or yarn.lock in your project folder.
2. Delete node_modules in your project folder.
3. Remove "eslint" from dependencies and/or devDependencies in the package.json file in your project folder.
4. Run npm install or yarn, depending on the package manager you use.

In most cases, this should be enough to fix the problem. If this has not helped, there are a few other things you can try:

5. If you used npm, install yarn (http://yarnpkg.com/) and repeat the above steps with it instead. This may help because npm has known issues with package hoisting which may get resolved in future versions.

6. Check if /Users/canopus/Dropbox/workspace/0. Side Projects/heymd/node_modules/eslint is outside your project directory. For example, you might have accidentally installed something in your home folder.

7. Try running npm ls eslint in your project folder. This will tell you which other package (apart from the expected react-scripts) installed eslint.

If nothing else helps, add SKIP_PREFLIGHT_CHECK=true to an .env file in your project. That would permanently disable this preflight check in case you want to proceed anyway.

P.S. We know this message is long but please read the steps above :-) We hope you find them helpful!