.eslintrc.json

{
    "env": {
      "browser": true,
      "es2021": true,
      "jest": true
    },
    "extends": [
      "standard",
      "eslint:recommended",
      "plugin:@typescript-eslint/recommended",
      "plugin:prettier/recommended",
      "plugin:svelte/recommended",
      "@rocketseat/eslint-config/node"
    ],
    "parser": "@typescript-eslint/parser",
    "parserOptions": {
    "project": "tsconfig.json",
    "extraFileExtensions": [".svelte"],
        "ecmaFeatures": {
            "jsx": true
        },
        "ecmaVersion": "latest",
        "sourceType": "module",
        "overrides": [
            {
                "files": ["*.svelte", "*.ts"],
                "parser": "svelte-eslint-parser",
                "parserOptions": {
                    "parser": "@typescript-eslint/parser"
                }
            }
        ]
    },
    "plugins": [
      "@typescript-eslint/eslint-plugin"
    ],
    "rules": {
        "prettier/prettier": ["error", {
            "endOfLine": "auto",
            "printWidth": 80,
            "tabWidth": 2,
            "doubleQuote": true,
            "trailingComma": "all",
            "arrowParens": "always",
            "semi": false
        }],
        "svelte/html-closing-bracket-spacing": "warn",
        "svelte/indent": "off",
        "svelte/html-quotes": "warn",
        "svelte/max-attributes-per-line": "off",
        "svelte/html-self-closing": "warn",
        "svelte/no-trailing-spaces": "error",
        "svelte/no-useless-mustaches": "error",
        "svelte/valid-each-key": "error",
        "svelte/mustache-spacing": ["warn", {
            "textExpressions": "never",
            "attributesAndProps": "never",
            "directiveExpressions": "never",
            "tags": {
                "openingBrace": "never",
                "closingBrace": "never"
            }
        }]
    },
    "@typescript-eslint/no-unused-vars": [
      "error",
      {
        "varsIgnorePattern": "^_",
        "argsIgnorePattern": "^_"
      }
    ],
    "settings": {
        "import/parsers": {
            "@typescript-eslint/parser": [".ts", ".tsx", ".d.ts"]
        }
    },
    "ignorePatterns": [
      "node_modules",
      "build",
      ".svelte-kit",
      "dist"
    ]
}