.eslintrc.json

{
  "root": true,
  "ignorePatterns": ["projects/**/*"],
  "overrides": [
    {
      "files": ["*.ts"],
      "parserOptions": {
        "project": ["tsconfig.json"],
        "createDefaultProgram": true
      },
      "extends": [
        "airbnb-base",
        "plugin:import/typescript", // this is needed because airbnb uses eslint-plugin-import
        "plugin:@typescript-eslint/recommended",
        "plugin:@angular-eslint/recommended",
        "plugin:@angular-eslint/template/process-inline-templates",
        "plugin:prettier/recommended"
      ],
      "rules": {
        "@angular-eslint/component-selector": [
          "error",
          {
            "prefix": "app",
            "style": "kebab-case",
            "type": "element"
          }
        ],
        "@angular-eslint/directive-selector": [
          "error",
          {
            "prefix": "app",
            "style": "camelCase",
            "type": "attribute"
          }
        ],

        // Custom rules:
        "import/extensions": 0,
        "import/prefer-default-export": 0,
        "no-useless-constructor": 0,
        "class-methods-use-this": "warn",
        "@angular-eslint/no-empty-lifecycle-method": "warn",
        "@typescript-eslint/no-empty-function": "warn",
        "@typescript-eslint/ban-types": "warn"
      }
    },
    {
      "files": ["*.html"],
      "extends": ["plugin:@angular-eslint/template/recommended"],
      "rules": {
        "@angular-eslint/template/conditional-complexity": ["error", { "maxComplexity": 4 }],
        "@angular-eslint/template/cyclomatic-complexity": ["error", { "maxComplexity": 5 }],
        "@angular-eslint/template/no-duplicate-attributes": "error",
        "@angular-eslint/template/use-track-by-function": "warn"
      }
    },
    {
      "files": ["*.html"],
      "excludedFiles": ["*inline-template-*.component.html"],
      "extends": ["plugin:prettier/recommended"],
      "rules": {
        "prettier/prettier": ["error", { "parser": "angular", "endOfLine": "auto" }]
      }
    }
  ]
}