sothmann

function log(target, key, descriptor: PropertyDescriptor) {
	var originalMethod = descriptor.value;

    descriptor.value = function(...args: any[]) {
		let functionName = key;
		console.log(functionName + "(" + args.join(", ") + ")");
        let result = originalMethod.apply(this, args);
        console.log("=> " + result);
        return result;
    };