[BUG]

[micahg]

Describe the bug I can't seem to figure out how to make body object's optional but their properties mandatory.

To Reproduce

checkSchema({
    a: {
      in: ["body"],
      optional: true,
      custom: {
        options: (value) => validateRect(value),
        errorMessage: "Invalid a",
      },
    },
    "a.x": {
      in: ["body"],
      optional: false,
      isInt: {
        options: { min: 0 },
        errorMessage: "a x must be a non-negative integer",
      },
    },
  });

Expected behavior The behavior I want is for a body no a to pass validation BUT a body with an empty a to fail, eg:

pass:

{}

fail:

{
  a: {}
}

pass:

{
  a: {
    x: 1
  }
}

Environment (please complete the following information):

• express-validator 7.2.0
• Operating system: WSL

Prerequisite

• are you able to run jest from the command line? yes?
• where do you run jest CLI from? [e.g., root directory of the project]
• how do you run your tests from the command line? (e.g., "npm run test" or "node_modules/.bin/jest")

Additional context

Thanks for helping - I know I can create a custom validator for the object - i was just wondering if there was a way to achieve this behaviour without.

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