ski-mask

const skiMask = require('ski-mask');
// or import validate from 'ski-mask'
 
 
const payload = {
    "schema": "iglu:com.snowplowanalytics.snowplow/unstruct_event/jsonschema/1-0-0",
    "data": {
        "event_name": "link_click",
        "schema": "iglu:com.snowplowanalytics.snowplow/link_click/jsonschema/1-0-0",
        "data": {
            "targetUrl": "https://myawesomeurl.com/data",
            "elementId": "bestElementEver"
        }
    }
};
 
const resolverConfig = {
    "schema": "iglu:com.snowplowanalytics.iglu/resolver-config/jsonschema/1-0-0",
    "data":
    {
        "cacheSize": 500,
        "repositories":
        [
            {
                "name": "Iglu Central",
                "priority": 0,
                "vendorPrefixes":
                [
                    "com.snowplowanalytics.snowplow"
                ],
                "connection":
                {
                    "http":
                    {
                        "uri": "http://iglucentral.com"
                    }
                }
            },
            {
                "name": "My Iglu Server",
                "priority": 1,
                "vendorPrefixes":
                [
                    "com.my-iglu-server"
                ],
                "connection":
                {
                    "http":
                    {
                        "uri": "http://awesome-schemas.my-iglu-server.com"
                    }
                }
            }
        ]
    }
};
 
skiMask.validate(payload, resolverConfig).then(
    msg => console.log(msg)
)
 
// Will yield a result object
 
// {
//   success: true,
//   message: 'All Valid'
// }
 
// or
 
// {
//   success: false,
//   message: 'some error message',
//   context: 'some context for the error message'
// }