vue/require-valid-default-prop does not work with type Object and return undefined

[xianshenglu]

Checklist

• [x] I have tried restarting my IDE and the issue persists.
• [x] I have read the FAQ and my problem is not listed.

Tell us about your environment

• ESLint version: 7.2.0
• eslint-plugin-vue version: 7.5.0
• Node version: v10.16.3
• Operating System: windows10

Please show your full configuration:

{
  "env": {
    "browser": true,
    "node": true,
    "es6": true
  },
  "globals": {
    "BMap": true
  },
  "parser": "vue-eslint-parser",
  "parserOptions": {
    "parser": "babel-eslint",
    "ecmaVersion": 2020,
    "sourceType": "module",
    "ecmaFeatures": {
      "generators": false,
      "objectLiteralDuplicateProperties": false
    }
  },
  "plugins": ["import", "vue"],
  "rules": {
    "vue/require-valid-default-prop": ["error"]
  }
}

What did you do?

export default {
  name: 'Settings',
  props: {
    a: {
      type: Object,
      default() {},
    },
    b: {
      type: Object,
      default: () => {},
    },
    c: {
      type: Object,
      default: () => undefined,
    },
    d: {
      type: Object,
      default: () => false,
    },
  },
}

What did you expect to happen?

error: Type of the default value for 'a' prop must be a object (vue/require-valid-default-prop) error: Type of the default value for 'b' prop must be a object (vue/require-valid-default-prop) error: Type of the default value for 'c' prop must be a object (vue/require-valid-default-prop) error: Type of the default value for 'd' prop must be a object (vue/require-valid-default-prop)

What actually happened?

error: Type of the default value for 'd' prop must be a object (vue/require-valid-default-prop)

Repository to reproduce this issue

[ota-meshi]

Thank you for this issue. I think we need to add another rule to check for the existence of return. It's similar to vue/return-in-computed-property rule.

[VRuzhentsov]

@ota-meshi Hi And what should I do with the next?

[xianshenglu]

@ota-meshi Hi And what should I do with the next?

change query type to Array. Also, the default value of settings should be ({}) instead of {}.

[VRuzhentsov]

change query type to Array. Also, the default value of settings should be ({}) instead of {}.

Totally missed that thank you so much