[ESLINT_LEGACY_OBJECT_REST_SPREAD]

[kmaitski]

Hey I was following #1834 since I was getting the same warning. I have since upgraded to the latest airbnb config and eslint hoping that it would solve the issue for me, but I am still getting the same message. I have run the peer deps install command for eslint-config-airbnb. When I run npm ls I get what looks like a huge dependency tree/graph. My .eslintrc is inside of my package.json and looks like this:

"eslintConfig":{  
        "parser": "babel-eslint",  
        "plugins": [  
            "react"  
        ],  
        "rules": {  
            "import/extensions": "off",  
            "import/no-unresolved": "off"  
        },  
        "extends": [  
            "airbnb-base",  
            "plugin:react/recommended"  
        ],  
        "env": {  
            "browser": true  
        }  
    }

And my dev dependencies are:

        "eslint": "^5.3.0",  
        "eslint-config-airbnb": "^17.1.0",  
        "eslint-config-airbnb-base": "^13.1.0",  
        "eslint-loader": "^2.1.0",  
        "eslint-plugin-import": "^2.14.0",  
        "eslint-plugin-jsx-a11y": "^6.1.1",  
        "eslint-plugin-react": "^7.11.1"

And the warning message is: (node:2750) [ESLINT_LEGACY_OBJECT_REST_SPREAD] DeprecationWarning: The 'parserOptions.ecmaFeatures.experimentalObjectRestSpread' option is deprecated. Use 'parserOptions.ecmaVersion' instead. (found in "airbnb-base")

If anyone has any information I would be very appreciative.

[ljharb]

if you look in node_modules/eslint-config-airbnb-base/package.json, what is the version listed?

Separately, why are you extending airbnb-base and react, when you have the main "airbnb" config available?

Try changing your config to this:

"eslintConfig": { 
        "extends": [  
            "airbnb"
        ],
        "parser": "babel-eslint",
        "rules": {  
            "import/extensions": "off",  // these should really be on, though
            "import/no-unresolved": "off"  
        },
        "env": {  
            "browser": true  
        }  
    }

[kmaitski]

After that change this is the new output:
(node:3070) [ESLINT_LEGACY_OBJECT_REST_SPREAD] DeprecationWarning: The 'parserOptions.ecmaFeatures.experimentalObjectRestSpread' option is deprecated. Use 'parserOptions.ecmaVersion' instead. (found in "../../../../usr/local/lib/node_modules/eslint-config-airbnb/node_modules/eslint-config-airbnb-base/index.js") (node:3070) [ESLINT_LEGACY_OBJECT_REST_SPREAD] DeprecationWarning: The 'parserOptions.ecmaFeatures.experimentalObjectRestSpread' option is deprecated. Use 'parserOptions.ecmaVersion' instead. (found in "airbnb-base")

[ljharb]

ahhh that looks like you've got those installed globally. Run npm uninstall -g eslint, and make sure you're running the local eslint.

[kmaitski]

Awesome thank you so much! It is working as it should now. Thanks again!