.eslintrc.json

{
  "root": true,
  "parser": "@typescript-eslint/parser",
  "overrides": [
    {
      "files": ["*.ts", "*.tsx"],
      "parserOptions": {
        "project": ["./tsconfig.json"]
      }
    }
  ],
  "plugins": [
    "@typescript-eslint",
    "deprecation"
  ],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended"
  ],
  "env": {
    "node": true
  },
  "ignorePatterns": [
  ],
  "rules": {
    "@typescript-eslint/no-unused-vars": ["error", { "argsIgnorePattern": "^_"}], // Same as in tsconfig. Allow such vars if they start with an underscore.
    "require-await": "error",                                   // Helps catch missing awaits
    "strict": "error",                                          // Disallows use of e.g. reserved keywords
    "prefer-promise-reject-errors": "error",                    // Throwing real Errors helps traceability
    "@typescript-eslint/no-namespace": "off",
    "@typescript-eslint/prefer-readonly": "error",
    "@typescript-eslint/consistent-type-definitions": "error",  // Prefer 'interface' over 'type'
    "no-empty": "off",                                          // Empty catch blocks can be useful
    "no-inner-declarations": "off",                             // Seems to break when using TS namespaces
    "eqeqeq": "error",                                          // == can be obscure/unintuitive, so use ===
    "deprecation/deprecation": "warn",
    // CODE FORMATTING =================
    "semi": "warn",
    "camelcase": "warn",
    "indent": ["warn", 4],
    "space-before-blocks": "warn",
    "keyword-spacing": "warn",
    "space-before-function-paren": ["warn", "never"],
    "dot-location": "warn",
    "quotes": ["warn", "double", {"allowTemplateLiterals": true}],   // Disallows single quote strings
    "comma-spacing": "warn",
    "brace-style": "warn",
    "@typescript-eslint/type-annotation-spacing": "warn",
    "no-trailing-spaces": "warn"
  }
}