fix: LiveQuery regexTimeout default value not applied (#10157)

spec/QueryTools.spec.js

@@ -543,6 +543,16 @@ describe('matchesQuery', function () {
     expect(matchesQuery(player, q)).toBe(true);
   });
 
+  it('applies default regexTimeout when liveQuery is configured without explicit regexTimeout', async () => {
+    await reconfigureServer({
+      liveQuery: { classNames: ['Player'] },
+    });
+    // Verify the default value is applied by checking the config
+    const Config = require('../lib/Config');
+    const config = Config.get('test');
+    expect(config.liveQuery.regexTimeout).toBe(100);
+  });
+
   it('matches $nearSphere queries', function () {
     let q = new Parse.Query('Checkin');
     q.near('location', new Parse.GeoPoint(20, 20));

src/Config.js

@@ -13,6 +13,7 @@ import {
   DatabaseOptions,
   FileUploadOptions,
   IdempotencyOptions,
+  LiveQueryOptions,
   LogLevels,
   PagesOptions,
   ParseServerOptions,
@@ -134,6 +135,7 @@ export class Config {
     databaseOptions,
     extendSessionOnUse,
     allowClientClassCreation,
+    liveQuery,
   }) {
     if (masterKey === readOnlyMasterKey) {
       throw new Error('masterKey and readOnlyMasterKey should be different');
@@ -176,6 +178,7 @@ export class Config {
     this.validateDatabaseOptions(databaseOptions);
     this.validateCustomPages(customPages);
     this.validateAllowClientClassCreation(allowClientClassCreation);
+    this.validateLiveQueryOptions(liveQuery);
   }
 
   static validateCustomPages(customPages) {
@@ -669,6 +672,17 @@ export class Config {
     }
   }
 
+  static validateLiveQueryOptions(liveQuery) {
+    if (liveQuery == undefined) {
+      return;
+    }
+    if (liveQuery.regexTimeout === undefined) {
+      liveQuery.regexTimeout = LiveQueryOptions.regexTimeout.default;
+    } else if (typeof liveQuery.regexTimeout !== 'number') {
+      throw `liveQuery.regexTimeout must be a number`;
+    }
+  }
+
   static validateRateLimit(rateLimit) {
     if (!rateLimit) {
       return;