is-my-json-valid plugin compare with exact value issue

I use is-my-json-valid plugin for nodeJS and I wonder if there any pattern to validate if integer is same integer and string is the same string.

So far I found the way to do that as:

Input JSON:

const body = {
exactInteger: 20, exactString: "snaggs" };

{
  "type" : "object",
  "properties" : {    
    "exactInteger"   : {"type" : "integer", "minimum" : 20, "maximum" : 20, "required": true},
    "exactString"    : {"type" : "string", "pattern": "^snaggs$", "required": true}
  }
}

but it looks complicated, any other way?

via snaggs