Add SdkUpdateMetadataKeys type

Author: ZamoraEmmanuel

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@splitsoftware/splitio-commons",
-  "version": "2.10.2-rc.1",
+  "version": "2.10.2-rc.3",
   "description": "Split JavaScript SDK common components",
   "main": "cjs/index.js",
   "module": "esm/index.js",

package.json

@@ -506,6 +506,15 @@ declare namespace SplitIO {
     names: string[]
   }
 
+  /**
+   * Metadata keys for SDK update events.
+   * Use the string literals directly: 'FLAGS_UPDATE' or 'SEGMENTS_UPDATE'
+   */
+  type SdkUpdateMetadataKeys = {
+    FLAGS_UPDATE: 'FLAGS_UPDATE';
+    SEGMENTS_UPDATE: 'SEGMENTS_UPDATE';
+  };
+
   /**
    * Metadata for the ready events emitted when the SDK is ready to evaluate feature flags.
    */