gracefully handle if allocation has no holdouts field (#32)

Author: aarsilv

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@eppo/js-client-sdk-common",
-  "version": "1.8.0",
+  "version": "1.8.1",
   "description": "Eppo SDK for client-side JavaScript applications (base for both web and react native)",
   "main": "dist/index.js",
   "files": [

src/client/eppo-client.ts

@@ -361,7 +361,7 @@ export default class EppoClient implements IEppoClient {
     let holdoutVariation = null;
 
     const holdoutShard = getShard(`holdout-${subjectKey}`, subjectShards);
-    const matchingHoldout = holdouts.find((holdout) => {
+    const matchingHoldout = holdouts?.find((holdout) => {
       const { statusQuoShardRange, shippedShardRange } = holdout;
       if (isShardInRange(holdoutShard, statusQuoShardRange)) {
         assignedVariation = variations.find(