Configuração simples para usar o eslint + import absoluto no create-react-app v3 seguindo as configurações da rocketseat

.eslintrc

{
  "parser": "babel-eslint",
  "extends": "airbnb",
  "env": {
    "browser": true,
    "jest": true
  },
  "plugins": ["react", "jsx-a11y", "import"],
  "rules": {
    "react/jsx-filename-extension": [
      "error",
      { "extensions": [".js", ".jsx"] }
    ],
    "import/prefer-default-export": "off"
  },
  "settings": {
    "import/resolver": {
      "node": {
        "moduleDirectory": ["node_modules", "src"]
      }
    }
  }
}

jsconfig.json

{
  "compilerOptions": {
    "baseUrl": "src"
  },
  "include": ["src"]
}