update from demoncord source

patcher.js

@@ -1,18 +1,20 @@
 function monkeyPatch(name, parentObj, patches) {
-	const injId   = Math.random().toString(36).slice(2).toUpperCase()
-	const before  = (patches["before"]  === undefined) ? (...args)=>args :  patches["before"];
-	const instead = (patches["instead"] === undefined) ? (...args)=>args : patches["instead"];
-	const after   = (patches["after"]   === undefined) ? (args, res)=>res :   patches["after"];
+	const injId   = Symbol()
+	const before  = (patches["before"]  === undefined) ? (...args)=>args     :  patches["before"];
+	const instead = (patches["instead"] === undefined) ? (res,...args)=>res(...args) : patches["instead"];
+	const after   = (patches["after"]   === undefined) ? (args, res)=>res    :   patches["after"];
 	const handler = {
-		apply: (target, thisArg, args) => {
-			before(args);
-			res = (patches["instead"] === undefined) ? target(...args) : instead(...args);
-			return after(...args, res);
+		apply: (target, thisArg, [ctx, args]) => {
+			before.apply(ctx, args);
+			res = instead(target.bind(ctx), args)
+			return after.apply(ctx, args.concat([res]));
 		}
 	};
 	const prox = new Proxy(parentObj[name], handler);
 	const orig = parentObj[name];
-	parentObj[name] = prox;
+	parentObj[name] = function() {
+		return prox(this, [arguments]);
+	};
 	const unpatch = () => {
 		parentObj[name] = orig;
 	}
@@ -23,6 +25,7 @@ function monkeyPatch(name, parentObj, patches) {
 	};
 	return unpatch;
 }
+
 function before(name, parentObj, func) {
 	return monkeyPatch(name, parentObj, {before: func})
 }
@@ -41,3 +44,4 @@ module.exports = {
 	instead,
 	after
 }
+