.eslintrc

{
  "parserOptions": {
    "ecmaVersion": 2019
  },
  "extends": [
    "eslint:all"
  ],
  "env": {
    "browser": true,
    "es6": true,
    "node": true
  },
  "rules": {
    "array-bracket-newline": "off",
    "array-bracket-spacing": ["error", "always"],
    "array-element-newline": "off",
    "arrow-parens": ["error", "as-needed"],
    "camelcase": "off",
    "comma-dangle": ["error", "always-multiline"],
    "consistent-return": "off",
    "dot-location": ["error", "property"],
    "func-names": "off",
    "function-call-argument-newline": "off",
    "id-length": "off",
    "indent": ["error", 4],
    "init-declarations": "off",
    "lines-around-comment": ["error", {
        "beforeBlockComment": false
    }],
    "max-classes-per-file": "off",
    "max-len": "off",
    "max-lines": "off",
    "max-lines-per-function": "off",
    "max-params": "off",
    "max-statements": "off",
    "multiline-comment-style": "off",
    "multiline-ternary": "off",
    "new-cap": "off",
    "no-continue": "off",
    "no-confusing-arrow": "off",
    "no-console": "off",
    "no-extra-parens": "off",
    "no-invalid-this": "off",
    "no-magic-numbers": "off",
    "no-mixed-operators": "off",
    "no-multi-assign": "off",
    "no-negated-condition": "off",
    "no-nested-ternary": "off",
    "no-param-reassign": "off",
    "no-process-env": "off",
    "no-process-exit": "off",
    "no-return-assign": "off",
    "no-ternary": "off",
    "no-underscore-dangle": "off",
    "no-warning-comments": "warn",
    "object-curly-spacing": ["error", "always"],
    "object-property-newline": "off",
    "one-var": ["error", {
      "initialized": "never",
      "uninitialized": "always"
    }],
    "padded-blocks": ["error", "never"],
    "prefer-arrow-callback": ["error", {
      "allowNamedFunctions": true
    }],
    "prefer-destructuring": "off",
    "prefer-named-capture-group": "off",
    "quote-props": ["error", "as-needed"],
    "quotes": ["error"],
    "require-atomic-updates": "off",
    "semi": ["error"],
    "sort-imports": ["warn", {
      "ignoreDeclarationSort": true
    }],
    "sort-keys": "off",
    "sort-vars": "off",
    "space-before-function-paren": ["error", {
      "anonymous": "always",
      "asyncArrow": "always",
      "named": "never"
    }],
    "wrap-regex": "off"
  },
  "overrides": [
    {
      "files": ["**/*.ts"],
      "parser": "@typescript-eslint/parser",
      "parserOptions": {
        "project": "./tsconfig.json"
      },
      "plugins": [
        "@typescript-eslint"
      ],
      "extends": [
        "plugin:@typescript-eslint/all",
        "plugin:@typescript-eslint/eslint-recommended"
      ],
      "rules": {
        "@typescript-eslint/camelcase": "off",
        "@typescript-eslint/explicit-function-return-type": ["warn", {
          "allowExpressions": true,
          "allowTypedFunctionExpressions": true
        }],
        "@typescript-eslint/indent": ["error", 4],
        "@typescript-eslint/member-delimiter-style": ["error", {
          "multiline": {
            "delimiter": "semi"
          }
        }],
        "@typescript-eslint/member-ordering": "off",
        "@typescript-eslint/naming-convention": "off",
        "@typescript-eslint/no-extra-parens": ["error", "all"],
        "@typescript-eslint/no-extraneous-class": "off",
        "@typescript-eslint/no-floating-promises": "off",
        "@typescript-eslint/no-magic-numbers": "off",
        "@typescript-eslint/no-parameter-properties": "off",
        "@typescript-eslint/no-type-alias": ["error", {
          "allowAliases": "always"
        }],
        "@typescript-eslint/no-underscore-dangle": "off",
        "@typescript-eslint/no-unused-vars": "off",
        "@typescript-eslint/no-unused-vars-experimental": "off",
        "@typescript-eslint/prefer-readonly-parameter-types": "off",
        "@typescript-eslint/quotes": ["error"],
        "@typescript-eslint/restrict-template-expressions": ["error", {
          "allowBoolean": true,
          "allowNumber": true
        }],
        "@typescript-eslint/semi": ["error"],
        "@typescript-eslint/space-before-function-paren": ["error", {
          "anonymous": "always",
          "asyncArrow": "always",
          "named": "never"
        }],
        "@typescript-eslint/strict-boolean-expressions": "off",
        "@typescript-eslint/typedef": "off"
      }
    }
  ]
}