Form: Validation Rules of type regexp do not work (TypeScript)

[k3flo]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

3.4.1

Environment

react 16.2.0, antd 3.4.1

Reproduction link

Steps to reproduce

Type any character in the input box

What is expected?

The validation should fail, because the regex only allows numbers

What is actually happening?

The validation succeeeds although the regex should fail

[afc163]

          {getFieldDecorator("testNumber", {
            rules: [
              {
                required: true,
-               type: "regexp",
                pattern: new RegExp("^[0-9]*$"),
                message: "Wrong format!"
              }
            ]
          })(<Input />)}

https://codesandbox.io/s/w09xl68pnw