.eslintrc.json

{
  "env": {
    "browser": true,
    "es2021": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "prettier"
  ],
  "parser": "@typescript-eslint/parser",
  "plugins": ["@typescript-eslint"],
  "root": true,
  "overrides": [],
  "parserOptions": {
    "ecmaVersion": "latest",
    "sourceType": "module",
    "ecmaFeatures": {
      "classes": true
    }
  },
  "rules": {
    "comma-dangle": 1,
    "quotes": [1, "single"],
    "no-undef": 2,
    "prefer-const": "error",
    "one-var": ["error", "never"],
    "padded-blocks": ["error", "never"],
    "padding-line-between-statements": [
      "error",
      { "blankLine": "always", "prev": "*", "next": "return" },
      { "blankLine": "always", "prev": "*", "next": "export" },
      { "blankLine": "always", "prev": "export", "next": "export" },
      { "blankLine": "always", "prev": "export", "next": "*" },
      { "blankLine": "always", "prev": "*", "next": "if" },
      { "blankLine": "always", "prev": "if", "next": "*" },
      { "blankLine": "always", "prev": "const", "next": "*" },
      { "blankLine": "always", "prev": "*", "next": "const" },
      { "blankLine": "always", "prev": "let", "next": "*" },
      { "blankLine": "always", "prev": "*", "next": "let" },
      { "blankLine": "always", "prev": "var", "next": "*" },
      { "blankLine": "always", "prev": "*", "next": "var" },
      {
        "blankLine": "always",
        "prev": "const",
        "next": "let"
      },
      {
        "blankLine": "never",
        "prev": "const",
        "next": "const"
      },
      {
        "blankLine": "never",
        "prev": "let",
        "next": "let"
      },
      {
        "blankLine": "never",
        "prev": "var",
        "next": "var"
      },
      {
        "blankLine": "always",
        "prev": "const",
        "next": "let"
      },
      {
        "blankLine": "always",
        "prev": "const",
        "next": "var"
      },
      {
        "blankLine": "always",
        "prev": "let",
        "next": "var"
      },
      { "blankLine": "always", "prev": "*", "next": "cjs-import" },
      { "blankLine": "always", "prev": "cjs-import", "next": "*" },
      { "blankLine": "never", "prev": "cjs-import", "next": "cjs-import" }
    ],
    "global-strict": 0,
    "indent": [1, 2, { "SwitchCase": 1 }],
    "no-extra-semi": 1,
    "no-underscore-dangle": 0,
    "no-console": 1,
    "no-unused-vars": 1,
    "no-trailing-spaces": [1, { "skipBlankLines": true }],
    "no-unreachable": 1,
    "no-alert": 1,
    "semi": 1
  }
}