.eslintrc

{
  "root": true,
  "env": {
    "browser": true,
    "es2021": true,
    "node": true
  },
  "extends": [
    "plugin:vue/vue3-essential",
    "eslint:recommended",
    "@vue/eslint-config-typescript",
    "@vue/eslint-config-prettier"
  ],
  "parserOptions": {
    "ecmaVersion": "latest"
  },
  "plugins": [],
  "rules": {
    // disable the rule for all files
    "@typescript-eslint/explicit-function-return-type": "off"
  },
  "overrides": [
    {
      // enable the rule specifically for TypeScript files
      "files": ["*.ts", "*.mts", "*.cts", "*.tsx"],
      "rules": {
        // allow arrow functions that start with the `void` keyword
        "@typescript-eslint/explicit-function-return-type": [
          "warn",
          {
            "allowExpressions": true,
            "allowConciseArrowFunctionExpressionsStartingWithVoid": true
          }
        ]
      }
    }
  ]
}