.eslintrc.js

module.exports = {
    root: true,
    parser: "@typescript-eslint/parser",
    parserOptions: {
      tsconfigRootDir: __dirname,
      project: ["./tsconfig.json"]
    },
    plugins: ["@typescript-eslint"],
    extends: [
      "eslint:recommended",
      "plugin:@typescript-eslint/recommended",
      "plugin:@typescript-eslint/recommended-type-checked",
      "plugin:@typescript-eslint/strict",
      "plugin:@typescript-eslint/strict-type-checked",
      "plugin:@typescript-eslint/stylistic",
      "plugin:@typescript-eslint/stylistic-type-checked",
      "prettier"
    ],
    rules: {
      "@typescript-eslint/no-non-null-assertion": 0,
      "@typescript-eslint/consistent-type-definitions": 0,
      "@typescript-eslint/prefer-nullish-coalescing": 0,
      "@typescript-eslint/no-unused-vars": [
        "error", {
          "argsIgnorePattern": "^_"
        }
      ],
      "@typescript-eslint/strict-boolean-expressions": [
        "error", {
          "allowNullableBoolean": true
        }
      ],
    }
};