.eslintrc.js

module.exports = {
  root: true,
  env: {
    node: true,
  },
  extends: [
    "plugin:vue/essential",
    "@vue/typescript/recommended",
    "@vue/airbnb",
  ],
  parserOptions: {
    ecmaVersion: 2020,
  },
  rules: {
    "linebreak-style": [
      "error",
      "unix",
    ],
    quotes: [
      "warn",
      "double",
    ],
    semi: [
      "error",
      "always",
    ],
    "no-mixed-operators": 0,
    "no-plusplus": ["error", { "allowForLoopAfterthoughts": true }],
    "space-before-function-paren": ["error", {
      anonymous: "always",
      named: "never",
      asyncArrow: "always",
    }],
    "vue/script-indent": ["error", 2],
    indent: ["error", 2, {
      SwitchCase: 1,
    }],
    "no-trailing-spaces": [2, {
      skipBlankLines: true,
    }],
    "no-multiple-empty-lines": ["error", {
      max: 10, maxBOF: 2, maxEOF: 0,
    }],
    "no-unused-vars": ["warn", {
      varsIgnorePattern: "^_",
    }],
    "@typescript-eslint/no-unused-vars": ["warn", {
      varsIgnorePattern: "^_",
    }],
    "prefer-destructuring": ["error", {
      object: true, array: false,
    }],
    "lines-between-class-members": ["error", "always", {
      exceptAfterSingleLine: true,
    }],
    "object-curly-newline": ["error", {
      ObjectExpression: "always",
      ObjectPattern: {
        multiline: true,
      },
      ImportDeclaration: "never",
      ExportDeclaration: {
        multiline: true, minProperties: 3,
      },
    }],
    "max-len": ["error", {
      code: 1000,
    }],
    "no-console": process.env.NODE_ENV === "production" ? "warn" : "off",
    "no-debugger": process.env.NODE_ENV === "production" ? "warn" : "off",
  },
};