remove error argument types from generated arguments

We currently don't support them anyways, therefore
we can just leave them out

generation/__tests__/ios.js

@@ -300,8 +300,16 @@ describe('iOS generation', () => {
 			expect(ExampleClass.performAction).toBeInstanceOf(Function);
 		});
 
-		it('should have the first arg set as invocation', () => {
-			expect(ExampleClass.performAction('MyClass', 'Foo')).toEqual({
+		it("should have the first arg set as invocation", () => {
+			expect(
+				ExampleClass.performAction(
+					{
+						type: "Invocation",
+						value: "MyClass"
+					},
+					"Foo"
+				)
+			).toEqual({
 				target: {
 					type: 'Invocation',
 					value: 'MyClass'
@@ -317,6 +325,13 @@ describe('iOS generation', () => {
 		});
 	});
 
+	describe("filtered argument types", () => {
+		it("should remove them from the method", () => {
+			// gets the expected arguments
+			expect(ExampleClass.rotateDeviceToOrientationErrorOrNil.length).toBe(1);
+		});
+	});
+
 	afterAll(() => {
 		// Clean up
 		remove.removeSync('./__tests__/generated-ios');

generation/core/generator.js

@@ -78,7 +78,13 @@ module.exports = function getGenerator({
 		);
 	}
 
+	const blacklistedArgumentTypes = ["__strong NSError **"];
+	function filterBlacklistedArguments(arg) {
+		return !blacklistedArgumentTypes.includes(arg.type);
+	}
+
 	function createMethod(classJson, json) {
+		json.args = json.args.filter(filterBlacklistedArguments);
 		const args = json.args.map(({ name }) => t.identifier(name));
 
 		if (!json.static) {

generation/fixtures/example.h

@@ -67,4 +67,8 @@
 // This method is an instance method
 // For us this means that we don't set the class type, but let it be set from the outside
 // This is an assumption based on our current experience with EarlGrey, we might need to rework this at some point
-- (instancetype)performAction:(NSString *)action;
+- (instancetype)performAction:(NSString *)action;
+
+// This method has a blacklisted argument type, so it should only have one arg
++ (BOOL)rotateDeviceToOrientation:(UIDeviceOrientation)deviceOrientation
+                       errorOrNil:(__strong NSError **)errorOrNil;