diff --git a/resources/buildConfigDefinitions.js b/resources/buildConfigDefinitions.js
index f4813975f4..0b7dcdac3d 100644
--- a/resources/buildConfigDefinitions.js
+++ b/resources/buildConfigDefinitions.js
@@ -155,6 +155,8 @@ function mapperFor(elt, t) {
     return wrap(t.identifier('objectParser'));
   } else if (t.isBooleanTypeAnnotation(elt)) {
     return wrap(t.identifier('booleanParser'));
+  } else if (t.isObjectTypeAnnotation(elt)) {
+    return wrap(t.identifier('objectParser'));
   } else if (t.isGenericTypeAnnotation(elt)) {
     const type = elt.typeAnnotation.id.name;
     if (type == 'Adapter') {
@@ -372,12 +374,18 @@ This code has been generated by resources/buildConfigDefinitions.js
 Do not edit manually, but update Options/index.js
 `;
 
-const babel = require('@babel/core');
-const res = babel.transformFileSync('./src/Options/index.js', {
-  plugins: [plugin, '@babel/transform-flow-strip-types'],
-  babelrc: false,
-  auxiliaryCommentBefore,
-  sourceMaps: false,
-});
-require('fs').writeFileSync('./src/Options/Definitions.js', res.code + '\n');
-require('fs').writeFileSync('./src/Options/docs.js', docs);
+// Only run the transformation when executed directly, not when imported by tests
+if (require.main === module) {
+  const babel = require('@babel/core');
+  const res = babel.transformFileSync('./src/Options/index.js', {
+    plugins: [plugin, '@babel/transform-flow-strip-types'],
+    babelrc: false,
+    auxiliaryCommentBefore,
+    sourceMaps: false,
+  });
+  require('fs').writeFileSync('./src/Options/Definitions.js', res.code + '\n');
+  require('fs').writeFileSync('./src/Options/docs.js', docs);
+}
+
+// Export mapperFor for testing
+module.exports = { mapperFor };
diff --git a/spec/buildConfigDefinitions.spec.js b/spec/buildConfigDefinitions.spec.js
new file mode 100644
index 0000000000..f0a8055860
--- /dev/null
+++ b/spec/buildConfigDefinitions.spec.js
@@ -0,0 +1,153 @@
+const t = require('@babel/types');
+const { mapperFor } = require('../resources/buildConfigDefinitions');
+
+describe('buildConfigDefinitions', () => {
+  describe('mapperFor', () => {
+    it('should return objectParser for ObjectTypeAnnotation', () => {
+      const mockElement = {
+        type: 'ObjectTypeAnnotation',
+      };
+
+      const result = mapperFor(mockElement, t);
+
+      expect(t.isMemberExpression(result)).toBe(true);
+      expect(result.object.name).toBe('parsers');
+      expect(result.property.name).toBe('objectParser');
+    });
+
+    it('should return objectParser for AnyTypeAnnotation', () => {
+      const mockElement = {
+        type: 'AnyTypeAnnotation',
+      };
+
+      const result = mapperFor(mockElement, t);
+
+      expect(t.isMemberExpression(result)).toBe(true);
+      expect(result.object.name).toBe('parsers');
+      expect(result.property.name).toBe('objectParser');
+    });
+
+    it('should return arrayParser for ArrayTypeAnnotation', () => {
+      const mockElement = {
+        type: 'ArrayTypeAnnotation',
+      };
+
+      const result = mapperFor(mockElement, t);
+
+      expect(t.isMemberExpression(result)).toBe(true);
+      expect(result.object.name).toBe('parsers');
+      expect(result.property.name).toBe('arrayParser');
+    });
+
+    it('should return booleanParser for BooleanTypeAnnotation', () => {
+      const mockElement = {
+        type: 'BooleanTypeAnnotation',
+      };
+
+      const result = mapperFor(mockElement, t);
+
+      expect(t.isMemberExpression(result)).toBe(true);
+      expect(result.object.name).toBe('parsers');
+      expect(result.property.name).toBe('booleanParser');
+    });
+
+    it('should return numberParser call expression for NumberTypeAnnotation', () => {
+      const mockElement = {
+        type: 'NumberTypeAnnotation',
+        name: 'testNumber',
+      };
+
+      const result = mapperFor(mockElement, t);
+
+      expect(t.isCallExpression(result)).toBe(true);
+      expect(result.callee.property.name).toBe('numberParser');
+      expect(result.arguments[0].value).toBe('testNumber');
+    });
+
+    it('should return moduleOrObjectParser for Adapter GenericTypeAnnotation', () => {
+      const mockElement = {
+        type: 'GenericTypeAnnotation',
+        typeAnnotation: {
+          id: {
+            name: 'Adapter',
+          },
+        },
+      };
+
+      const result = mapperFor(mockElement, t);
+
+      expect(t.isMemberExpression(result)).toBe(true);
+      expect(result.object.name).toBe('parsers');
+      expect(result.property.name).toBe('moduleOrObjectParser');
+    });
+
+    it('should return numberOrBooleanParser for NumberOrBoolean GenericTypeAnnotation', () => {
+      const mockElement = {
+        type: 'GenericTypeAnnotation',
+        typeAnnotation: {
+          id: {
+            name: 'NumberOrBoolean',
+          },
+        },
+      };
+
+      const result = mapperFor(mockElement, t);
+
+      expect(t.isMemberExpression(result)).toBe(true);
+      expect(result.object.name).toBe('parsers');
+      expect(result.property.name).toBe('numberOrBooleanParser');
+    });
+
+    it('should return numberOrStringParser call expression for NumberOrString GenericTypeAnnotation', () => {
+      const mockElement = {
+        type: 'GenericTypeAnnotation',
+        name: 'testString',
+        typeAnnotation: {
+          id: {
+            name: 'NumberOrString',
+          },
+        },
+      };
+
+      const result = mapperFor(mockElement, t);
+
+      expect(t.isCallExpression(result)).toBe(true);
+      expect(result.callee.property.name).toBe('numberOrStringParser');
+      expect(result.arguments[0].value).toBe('testString');
+    });
+
+    it('should return arrayParser for StringOrStringArray GenericTypeAnnotation', () => {
+      const mockElement = {
+        type: 'GenericTypeAnnotation',
+        typeAnnotation: {
+          id: {
+            name: 'StringOrStringArray',
+          },
+        },
+      };
+
+      const result = mapperFor(mockElement, t);
+
+      expect(t.isMemberExpression(result)).toBe(true);
+      expect(result.object.name).toBe('parsers');
+      expect(result.property.name).toBe('arrayParser');
+    });
+
+    it('should return objectParser for unknown GenericTypeAnnotation', () => {
+      const mockElement = {
+        type: 'GenericTypeAnnotation',
+        typeAnnotation: {
+          id: {
+            name: 'UnknownType',
+          },
+        },
+      };
+
+      const result = mapperFor(mockElement, t);
+
+      expect(t.isMemberExpression(result)).toBe(true);
+      expect(result.object.name).toBe('parsers');
+      expect(result.property.name).toBe('objectParser');
+    });
+  });
+});
diff --git a/src/Options/Definitions.js b/src/Options/Definitions.js
index 1ae9512823..013d2c80ec 100644
--- a/src/Options/Definitions.js
+++ b/src/Options/Definitions.js
@@ -111,6 +111,7 @@ module.exports.ParseServerOptions = {
     env: 'PARSE_SERVER_AUTH_PROVIDERS',
     help:
       'Configuration for your authentication providers, as stringified JSON. See http://docs.parseplatform.org/parse-server/guide/#oauth-and-3rd-party-authentication',
+    action: parsers.objectParser,
   },
   cacheAdapter: {
     env: 'PARSE_SERVER_CACHE_ADAPTER',