Help required in understanding validation function

[WaseemAR]

Hi,

I am using your Library for one of my project, Its a great library. i have been playing around the code for developing a async validations. I am stuck in a part of your code. I would be glad if u can help me understand. here is a snippet of the code where a little knowledge is required.```

    validations.presence = function presence(paramName, customMessage) {
      return function(params) {

        return {
          field: paramName,
          message: translator(customMessage || 'required', {paramName: paramName}, locals),
          result: get(params, paramName) != null
       }
     }
   }

I want to know how the params value is passed?

Thank you.

[nettofarah]

Hey, @WaseemAR.
In this case params maps directly to the original object you pass to validate*** or assert***.

Here's where the params are passed: https://github.com/nettofarah/property-validator/blob/master/lib/request_validator.js#L6-L8

[WaseemAR]

Thank you @nettofarah