Validate data usage

validate.js

import { validate, list, dict, required, optional } from 'validators';

pipe(
    validate(
        identity,
        [
            required('first', isString),
            optional('second', list(isString), []),
            // required(['third', 'subParam', 'deepParam'], isNumber)
            required('third', dict([
                required('subParam', dict([
                    required('deepParam', isNumber)
                ]))
            ]))
        ],
        {
            first: 'string',
            second: [
                "string",
                "string"
            ],
            third: {
                subParam: {
                    deepParam: 10
                }
            }
        }
    ),
    rmap((result) => {
        dispatch({
            type: IS_OK
            result
        });
    }), 
    errmap((errors) => {
        dispatch({
            type: IS_ERROR
            errors
        })
    })
);