@@ -1 +1,2 @@
 - Fix reference docs for performance monitoring.
+- Fix bug where function configuration wil null values couldn't be deployed. (#1246)

@@ -7,6 +7,36 @@ describe('stackToWire', () => {
 params.clearParams();
 });
 
+it('converts stack with null values values', () => {
+const stack: ManifestStack = {
+endpoints: {
+v2http: {
+platform: 'gcfv2',
+entryPoint: 'v2http',
+labels: {},
+httpsTrigger: {},
+maxInstances: null,
+},
+},
+requiredAPIs: [],
+specVersion: 'v1alpha1',
+};
+const expected = {
+endpoints: {
+v2http: {
+platform: 'gcfv2',
+entryPoint: 'v2http',
+labels: {},
+httpsTrigger: {},
+maxInstances: null,
+},
+},
+requiredAPIs: [],
+specVersion: 'v1alpha1',
+};
+expect(stackToWire(stack)).to.deep.equal(expected);
+});
+
 it('converts Expression types in endpoint options to CEL', () => {
 const intParam = params.defineInt('foo', { default: 11 });
 const stringParam = params.defineString('bar', {

@@ -107,7 +107,7 @@ export function stackToWire(stack: ManifestStack): Object {
 for (const [key, val] of Object.entries(obj)) {
 if (val instanceof Expression) {
 obj[key] = val.toCEL();
-} else if (typeof val === 'object') {
+} else if (typeof val === 'object' && val !== null) {
 traverse(val);
 }
 }