feat: check that regions are macthing between AWS and activity ARN

BREAKING CHANGE: activityArn must be explictly defined

Author: piercus

lib/worker.js

@@ -1,6 +1,7 @@
 const EventEmitter = require('events').EventEmitter;
 const util = require('util');
 const AWS = require('aws-sdk');
+var parser = require('aws-arn-parser');
 
 const Pooler = require('./pooler.js');
 const replaceError = require('./replace-error.js');
@@ -28,7 +29,14 @@ function Worker(options) {
 	this.autoStart = typeof (options.autoStart) === 'boolean' ? options.autoStart : true;
 
 	if (!options.activityArn) {
-		this.emit('error', new Error('activityArn is mandatory inside Worker'));
+		throw(new Error('activityArn is mandatory inside Worker'));
+		return;
+	}
+	
+	const {region} = parser(options.activityArn);
+	
+	if(this.stepfunction.config.region !== region){
+		throw(new Error(`activity ARN region (${region}) should match with AWS Region (${this.stepfunction.config.region})`));
 		return;
 	}
 

package.json

@@ -37,6 +37,7 @@
     "xo": "^0.18.2"
   },
   "dependencies": {
+    "aws-arn-parser": "^1.0.0",
     "aws-sdk": "^2.82.0"
   }
 }