MOJavaScriptObject function execution

MOJavaScriptObject.m

@import JavaScriptCore;

///	Retaining MOJavaScriptObject retains your JSContext/JSObject as well

@interface MOJavaScriptObject : NSObject

	@property (readonly) JSObjectRef JSObject;

	@property (readonly) JSContextRef JSContext;

@end
  
@implementation MOJavaScriptObject ()
 
	- (JSValue*) callWithArguments:(NSArray*)argumentsArray {
		JSContext *context = [JSContext contextWithJSGlobalContextRef:(JSGlobalContextRef)self.JSContext];
		JSValue *function = [JSValue valueWithJSValueRef:self.JSObject inContext:context];
		
		return [function callWithArguments:argumentsArray];
	}

@end

For anyone else who finds this gist and has the same questions as @websiddu and @nikogu:

The problem in James's case was that his JSContext was being released by Sketch before the function could execute. The solution was to use coscript.setShouldKeepAround(true) to prevent Sketch from releasing the context early.

@jamztang can you paste your closure code witch is how you trigger the runSomething method.

fn1(a, b) { return a + b; }