.eslintrc.json

{
  "extends": [
    // js/ts specific
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "typescript",
    "plugin:storybook/recommended",
    // react/next
    "next/core-web-vitals",
    // must be last for prettier to work well with eslint
    "prettier"
  ],
  "rules": {
    "quotes": [
      "warn",
      "single",
      { "avoidEscape": true, "allowTemplateLiterals": false }
    ],
    "no-console": "warn",
    "react/no-danger": "error",
    "import/no-duplicates": "warn"
  },
  "overrides": [
    {
      "files": ["*.ts", "*.tsx", "*.mts"],
      "parser": "@typescript-eslint/parser",
      "parserOptions": {
        "project": "./tsconfig.json"
      },
      "rules": {
        "@typescript-eslint/no-floating-promises": "error",
        "@typescript-eslint/explicit-module-boundary-types": "warn",
        "@typescript-eslint/no-empty-function": "off",
        "@typescript-eslint/no-unused-vars": "warn"
      }
    },
    {
      "files": ["*.stories.ts?(x)"],
      "parserOptions": {
        "project": "./tsconfig.json"
      },
      "rules": {
        "@typescript-eslint/no-non-null-assertion": "off"
      }
    },
    {
      "files": ["*@(spec|test).@(t|j)s?(x)"],
      "extends": [
        "plugin:jest/recommended",
        "plugin:jest/style",
        "plugin:jest-dom/recommended",
        "plugin:testing-library/react"
      ],
      "rules": {
        "@typescript-eslint/no-non-null-assertion": "off",
        "jest/no-standalone-expect": [
          "error",
          { "additionalTestBlockFunctions": ["each.it"] }
        ]
      }
    }
  ]
}