fix weird TS errors

src/webpage/channel.ts

@@ -16,7 +16,6 @@ import {
 	messagejson,
 	readyjson,
 	startTypingjson,
-	webhookType,
 } from "./jsontypes.js";
 import {MarkDown} from "./markdown.js";
 import {Member} from "./member.js";

src/webpage/utils/utils.ts

@@ -244,7 +244,7 @@ class Directory {
 			return true;
 		} else {
 			//Curse you webkit!
-			return await this.setStringWorker(file, contents);
+			return await this.setStringWorker(file, contents.buffer as ArrayBuffer);
 		}
 	}
 	async getDir(name: string) {