.eslintrc.json

{
  "plugins": ["jest", "@typescript-eslint"],
  "extends": ["plugin:github/recommended"],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 9,
    "sourceType": "module",
    "project": "./tsconfig.json"
  },
  "rules": {
    "eslint-comments/no-use": "off",
    "import/no-namespace": "off",
    "i18n-text/no-en": "off",
    "no-unused-vars": "off",
    // "@typescript-eslint/no-unused-vars": "error",
    "@typescript-eslint/explicit-member-accessibility": [
      "error",
      {"accessibility": "no-public"}
    ],
    "@typescript-eslint/no-require-imports": "error",
    "@typescript-eslint/array-type": "error",
    "@typescript-eslint/await-thenable": "error",
    "@typescript-eslint/ban-ts-comment": "error",
    "camelcase": "off",
    "@typescript-eslint/consistent-type-assertions": "error",
    "@typescript-eslint/explicit-function-return-type": [
      "error",
      {"allowExpressions": true}
    ],
    "@typescript-eslint/func-call-spacing": ["error", "never"],
    "@typescript-eslint/no-array-constructor": "error",
    "@typescript-eslint/no-empty-interface": "error",
    "@typescript-eslint/no-explicit-any": "error",
    "@typescript-eslint/no-extraneous-class": "error",
    "@typescript-eslint/no-for-in-array": "error",
    "@typescript-eslint/no-inferrable-types": "error",
    "@typescript-eslint/no-misused-new": "error",
    "@typescript-eslint/no-namespace": "error",
    "@typescript-eslint/no-non-null-assertion": "warn",
    "@typescript-eslint/no-unnecessary-qualifier": "error",
    "@typescript-eslint/no-unnecessary-type-assertion": "error",
    "@typescript-eslint/no-useless-constructor": "error",
    "@typescript-eslint/no-var-requires": "error",
    "@typescript-eslint/prefer-for-of": "warn",
    "@typescript-eslint/prefer-function-type": "warn",
    "@typescript-eslint/prefer-includes": "error",
    "@typescript-eslint/prefer-string-starts-ends-with": "error",
    "@typescript-eslint/promise-function-async": "error",
    "@typescript-eslint/require-array-sort-compare": "error",
    // This didn't work
    // "@typescript-eslint/restrict-plus-operands": "error",
    "semi": "off",
    "@typescript-eslint/semi": ["error", "never"],
    "@typescript-eslint/type-annotation-spacing": "error",
    "@typescript-eslint/unbound-method": "error"
  },
  "env": {
    "node": true,
    "es6": true,
    "jest/globals": true
  }
}