Constant value never working

[lamuertepeluda]

Hello I was following the examples to validate against a date range

Schema

{
    "definitions": {},
    "$schema": "http://json-schema.org/draft-07/schema#",
    "$id": "https://some-url/mini-schema.json",
    "type": "object",
    "title": "Mini Schema",
    "required": [
        "year"
    ],
    "additionalProperties": false,
    "properties": {
        "year": {
            "$id": "#/properties/year",
            "type": "string",
            "title": "Year (4 digits)",
            "description": "a valid year string in YYYY format",
            "default": "",
            "moment": {
                "format": [
                    "YYYY"
                ],
                "validate": [
                    {
                        "test": "isSameOrAfter",
                        "value": "1900-01-01T00:00:00.000Z"
                    },
                    {
                        "test": "isSameOrBefore",
                        "value": "2999-01-01T00:00:00.000Z"
                    }
                ]
            },
            "examples": [
                "2020"
            ]
        }
    }
}

Data

{
    year: '2010'
}

Error text

data/year "isAfter" validation failed for value(s): null

Library Versions

    "ajv": "^6.10.2",
    "ajv-keywords": "^3.4.1",
    "ajv-moment": "^2.0.3",
    "moment": "^2.24.0",
    "moment-timezone": "^0.5.27"

I think the problem is at this line of code https://github.com/cludden/ajv-moment/blob/master/lib/index.js#L82

const _val = { now: val.now, $data: val.$data, manipulate: val.manipulate };
            if (_val.now !== true && typeof _val.$data === 'string') {
                _val.value = it.util.getData(_val.$data, it.dataLevel, it.dataPathArr);
            }

_val.value is always undefined when "value" is a constant like in my example

Should be

const _val = { now: val.now, $data: val.$data, manipulate: val.manipulate };
 if (typeof val === 'string'){
    _val.value = JSON.stringify(val);
 }
else  if (_val.now !== true && typeof _val.$data === 'string') {
   _val.value = it.util.getData(_val.$data, it.dataLevel, it.dataPathArr);
}

I will try to submit a PR