fix: Deprecation warning logged at server launch for nested Parse Server option even if option is explicitly set

spec/Deprecator.spec.js

@@ -45,4 +45,29 @@ describe('Deprecator', () => {
       `DeprecationWarning: ${options.usage} is deprecated and will be removed in a future version. ${options.solution}`
     );
   });
+
+  it('logs deprecation for nested option key with dot notation', async () => {
+    deprecations = [{ optionKey: 'databaseOptions.allowPublicExplain', changeNewDefault: 'false' }];
+
+    spyOn(Deprecator, '_getDeprecations').and.callFake(() => deprecations);
+    const logger = require('../lib/logger').logger;
+    const logSpy = spyOn(logger, 'warn').and.callFake(() => {});
+
+    await reconfigureServer();
+    expect(logSpy.calls.all()[0].args[0]).toEqual(
+      `DeprecationWarning: The Parse Server option '${deprecations[0].optionKey}' default will change to '${deprecations[0].changeNewDefault}' in a future version.`
+    );
+  });
+
+  it('does not log deprecation for nested option key if option is set manually', async () => {
+    deprecations = [{ optionKey: 'databaseOptions.allowPublicExplain', changeNewDefault: 'false' }];
+
+    spyOn(Deprecator, '_getDeprecations').and.callFake(() => deprecations);
+    const logSpy = spyOn(Deprecator, '_logOption').and.callFake(() => {});
+    const Config = require('../lib/Config');
+    const config = Config.get('test');
+    // Directly test scanParseServerOptions with nested option set
+    Deprecator.scanParseServerOptions({ databaseOptions: { allowPublicExplain: true } });
+    expect(logSpy).not.toHaveBeenCalled();
+  });
 });

spec/Utils.spec.js

@@ -122,4 +122,55 @@ describe('Utils', () => {
       expect(result).toBe('{"name":"test","number":42,"nested":{"key":"value"}}');
     });
   });
+
+  describe('getNestedProperty', () => {
+    it('should get top-level property', () => {
+      const obj = { foo: 'bar' };
+      expect(Utils.getNestedProperty(obj, 'foo')).toBe('bar');
+    });
+
+    it('should get nested property with dot notation', () => {
+      const obj = { database: { options: { enabled: true } } };
+      expect(Utils.getNestedProperty(obj, 'database.options.enabled')).toBe(true);
+    });
+
+    it('should return undefined for non-existent property', () => {
+      const obj = { foo: 'bar' };
+      expect(Utils.getNestedProperty(obj, 'baz')).toBeUndefined();
+    });
+
+    it('should return undefined for non-existent nested property', () => {
+      const obj = { database: { options: {} } };
+      expect(Utils.getNestedProperty(obj, 'database.options.enabled')).toBeUndefined();
+    });
+
+    it('should return undefined when path traverses non-object', () => {
+      const obj = { database: 'string' };
+      expect(Utils.getNestedProperty(obj, 'database.options.enabled')).toBeUndefined();
+    });
+
+    it('should return undefined for null object', () => {
+      expect(Utils.getNestedProperty(null, 'foo')).toBeUndefined();
+    });
+
+    it('should return undefined for empty path', () => {
+      const obj = { foo: 'bar' };
+      expect(Utils.getNestedProperty(obj, '')).toBeUndefined();
+    });
+
+    it('should handle value of 0', () => {
+      const obj = { database: { timeout: 0 } };
+      expect(Utils.getNestedProperty(obj, 'database.timeout')).toBe(0);
+    });
+
+    it('should handle value of false', () => {
+      const obj = { database: { enabled: false } };
+      expect(Utils.getNestedProperty(obj, 'database.enabled')).toBe(false);
+    });
+
+    it('should handle value of empty string', () => {
+      const obj = { database: { name: '' } };
+      expect(Utils.getNestedProperty(obj, 'database.name')).toBe('');
+    });
+  });
 });

src/Deprecator/Deprecator.js

@@ -1,5 +1,6 @@
 import logger from '../logger';
 import Deprecations from './Deprecations';
+import Utils from '../Utils';
 
 /**
  * The deprecator class.
@@ -21,7 +22,7 @@ class Deprecator {
       const changeNewDefault = deprecation.changeNewDefault;
 
       // If default will change, only throw a warning if option is not set
-      if (changeNewDefault != null && options[optionKey] == null) {
+      if (changeNewDefault != null && Utils.getNestedProperty(options, optionKey) == null) {
         Deprecator._logOption({ optionKey, changeNewDefault, solution });
       }
     }

src/Utils.js

@@ -444,6 +444,31 @@ class Utils {
       return value;
     };
   }
+
+  /**
+   * Gets a nested property value from an object using dot notation.
+   * @param {Object} obj The object to get the property from.
+   * @param {String} path The property path in dot notation, e.g. 'databaseOptions.allowPublicExplain'.
+   * @returns {any} The property value or undefined if not found.
+   * @example
+   * const obj = { database: { options: { enabled: true } } };
+   * Utils.getNestedProperty(obj, 'database.options.enabled');
+   * // Output: true
+   */
+  static getNestedProperty(obj, path) {
+    if (!obj || !path) {
+      return undefined;
+    }
+    const keys = path.split('.');
+    let current = obj;
+    for (const key of keys) {
+      if (current == null || typeof current !== 'object') {
+        return undefined;
+      }
+      current = current[key];
+    }
+    return current;
+  }
 }
 
 module.exports = Utils;