.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true
  },
  "extends": "eslint:recommended",
  "parser": "vue-eslint-parser",
  "parserOptions": {
    "parser": "babel-eslint",
    "sourceType": "module",
    "allowImportExportEverywhere": false
  },
  "rules": {
    "func-names": 0,
    "no-nested-ternary": 0,
    "max-len": 0,
    "arrow-parens": ["error", "always"],
    "no-underscore-dangle": 0,
    "comma-dangle": ["error", {
      "arrays": "always-multiline",
      "objects": "always-multiline",
      "imports": "always-multiline",
      "exports": "always-multiline",
      "functions": "never"
    }],
    "no-use-before-define": ["error", "nofunc"],
    "no-empty": ["error", { "allowEmptyCatch": true }],
    "no-mixed-operators": ["error", { "allowSamePrecedence": true }],
    "indent": ["error", 4, { "flatTernaryExpressions": true, "SwitchCase": 1 }]
  },
  "overrides": [{
    "files": ["**/*.ts"],
    "parser": "@typescript-eslint/parser",
    "plugins": ["@typescript-eslint"],
    "extends": ["plugin:@typescript-eslint/eslint-recommended", "plugin:@typescript-eslint/recommended"],
    "rules": {
      "@typescript-eslint/ban-ts-comment": "off"
    }
  }]
}