.eslintrc.js

module.exports = {
  root: true,
  parser: "@typescript-eslint/parser",
  parserOptions: {
    tsconfigRootDir: __dirname,
    project: ["./tsconfig.json"],
  },
  plugins: [
    "import",
    "@typescript-eslint",
    "eslint-comments",
    "jest",
    "promise",
  ],
  extends: [
    "airbnb-typescript/base",
    "plugin:@typescript-eslint/recommended",
    "plugin:eslint-comments/recommended",
    "plugin:jest/recommended",
    "plugin:promise/recommended",
    "prettier",
    "plugin:@typescript-eslint/recommended-requiring-type-checking",
  ],
  env: {
    node: true,
    browser: true,
    jest: true,
  },
  rules: {
    // note you must disable the base rule as it can report incorrect errors
    quotes: ["error", "double"],
    "no-unused-vars": "off",
    "@typescript-eslint/no-unused-vars": ["error"],
    "no-underscore-dangle": "off",
    "lines-between-class-members": ["warn", "always"],
    "@typescript-eslint/explicit-function-return-type": ["error"],
    "@typescript-eslint/naming-convention": [
      "error",
      { selector: "typeLike", format: ["PascalCase"] },
      { selector: "enumMember", format: ["PascalCase"] },
      { selector: "variableLike", format: ["camelCase"] },
      {
        selector: "interface",
        format: ["PascalCase"],
        custom: {
          regex: "^I[A-Z]",
          match: false,
        },
      },
      {
        selector: "typeAlias",
        format: ["PascalCase"],
        custom: {
          regex: "^I[A-Z]",
          match: false,
        },
      },
    ],
    "class-methods-use-this": "off",
    "jest/no-conditional-expect": "off",
  },
};