missingProperty undefined with ownProperties: true

[brigand]

What version of Ajv are you using? Does the issue happen if you use the latest version?

7.2.1

Ajv options object

const options = {
	ownProperties: true,
};

JSON Schema

{
  "type": "object",
  "required": [
    "a"
  ],
  "properties": {
    "a": {
      "type": "string"
    }
  }
}

Sample data

{}

Your code

const ajv = new Ajv(options);
const foo = ajv.compile(schema);
foo(data);
assert.deepEqual(foo.errors[0], {
  keyword: 'required',
  dataPath: '',
  schemaPath: '#/required',
  params: { missingProperty: undefined },
  message: "should have required property 'undefined'",
});

What results did you expect?

missingProperty should be 'a', and message should reference it instead of undefined.

Are you going to resolve the issue?

If recommended as a good first issue.

[epoberezkin]

thank you - fixed!

[epoberezkin]

in 7.2.2