.eslintrc

{
  "parser": "@typescript-eslint/parser",
  "env": {
    "browser": true,
    "node": true,
    "es6": true
  },
  "plugins": [
    "@typescript-eslint",
    "lit"
  ],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:lit/recommended"
  ],
  "parserOptions": {
    "ecmaVersion": 2021,
    "sourceType": "module"
  },
  "ignorePatterns": [
    "types/**/*",
    "dist/**/*",
    "dev/**/*"
  ],
  "rules": {
    "lit/no-legacy-template-syntax": "error",
    "lit/no-template-arrow": "warn",
    // Best practices
    "@typescript-eslint/no-unused-vars": "error",
    "dot-notation": "error",
    "no-else-return": "error",
    "no-floating-decimal": "error",
    "no-sequences": "error",
    "max-depth": [
      "error",
      4
    ],
    "camelcase": "warn",
    "no-console": [
      "warn",
      {
        "allow": [
          "error",
          "warn",
          "info"
        ]
      }
    ],
    // Stylistic
    "array-bracket-spacing": "error",
    "computed-property-spacing": [
      "error",
      "never"
    ],
    "no-lonely-if": "error",
    "no-unneeded-ternary": "error",
    "one-var-declaration-per-line": "error",
    "quotes": [
      "error",
      "single",
      {
        "allowTemplateLiterals": false,
        "avoidEscape": true
      }
    ]
  }
}