feat: Add versionId to tracking plan data

src/amplitude-client.js

@@ -1413,6 +1413,7 @@ AmplitudeClient.prototype._logEvent = function _logEvent(
         branch: this.options.plan.branch || undefined,
         source: this.options.plan.source || undefined,
         version: this.options.plan.version || undefined,
+        versionId: this.options.plan.versionId || undefined,
       };
     }
 
@@ -1446,7 +1447,13 @@ AmplitudeClient.prototype._logEvent = function _logEvent(
 };
 
 const _isObservePlanSet = function _isObservePlanSet(scope) {
-  return scope.options.plan && (scope.options.plan.source || scope.options.plan.branch || scope.options.plan.version);
+  return (
+    scope.options.plan &&
+    (scope.options.plan.source ||
+      scope.options.plan.branch ||
+      scope.options.plan.version ||
+      scope.options.plan.versionId)
+  );
 };
 
 var _shouldTrackField = function _shouldTrackField(scope, field) {

src/options.js

@@ -35,6 +35,7 @@ import { version as libraryVersion } from '../package.json';
  * @property {string} [plan.branch] The tracking plan branch name e.g. "main"
  * @property {string} [plan.source] The tracking plan source e.g. "web"
  * @property {string} [plan.version] The tracking plan version e.g. "1", "15"
+ * @property {string} [plan.versionId] The tracking plan version Id e.g. "9ec23ba0-275f-468f-80d1-66b88bff9529"
  * @property {string} [platform=`Web`] -  Platform device is running on. Defaults to `Web` (browser, including mobile browsers).
  * @property {number} [savedMaxCount=`1000`] -  Maximum number of events to save in localStorage. If more events are logged while offline, then old events are removed.
  * @property {boolean} [saveEvents=`true`] -  If `true`, saves events to localStorage and removes them upon successful upload. *Note: Without saving events, events may be lost if the user navigates to another page before the events are uploaded.*
@@ -87,6 +88,7 @@ export default {
     branch: '',
     source: '',
     version: '',
+    versionId: '',
   },
   platform: 'Web',
   savedMaxCount: 1000,

test/amplitude-client.js

@@ -901,6 +901,7 @@ describe('AmplitudeClient', function () {
         branch: 'my-feature-branch',
         source: 'web',
         version: '1.0.0',
+        versionId: '9ec23ba0-275f-468f-80d1-66b88bff9529',
       };
       amplitude.init(apiKey, null, { plan: plan });