Small TypeScript coverage expansion

* The guard() function in m2d/event-dispatcher.js no longer takes (any, any), but a string and a function.

* m2d/send-event.js no longer complains that res.body has some missing fields. It would appear as though those missing fields weren't revelant to the fromWeb() function (into which res.body is passed), given that this code worked before and still contunes to work, so I just @ts-ignore'd res.body

This commit's developer's off-topic personal comment, related to this commit: This has nothing to do with improving thread UX, even tho this is what I was supposed to work on. However, in my attempts to discover in what file should I start, I stumbled upon those errors from m2d/send-event.js, so I fixed them. And after establishing that m2d/event-dispatcher.js is the file that I'm looking for, I also noticed that guard()'s @parm definitions could be improved, so I did that. Now - back to thread work...

src/m2d/actions/send-event.js

@@ -39,14 +39,20 @@ async function resolvePendingFiles(message) {
 		if ("key" in p) {
 			// Encrypted file
 			const d = crypto.createDecipheriv("aes-256-ctr", Buffer.from(p.key, "base64url"), Buffer.from(p.iv, "base64url"))
-			await api.getMedia(p.mxc).then(res => stream.Readable.fromWeb(res.body).pipe(d))
+			await api.getMedia(p.mxc).then(res => stream.Readable.fromWeb(
+				// @ts-ignore
+				res.body
+			).pipe(d))
 			return {
 				name: p.name,
 				file: d
 			}
 		} else {
 			// Unencrypted file
-			const body = await api.getMedia(p.mxc).then(res => stream.Readable.fromWeb(res.body))
+			const body = await api.getMedia(p.mxc).then(res => stream.Readable.fromWeb(
+				// @ts-ignore
+				res.body
+			))
 			return {
 				name: p.name,
 				file: body

src/m2d/event-dispatcher.js

@@ -156,8 +156,12 @@ async function sendError(roomID, source, type, e, payload) {
 	} catch (e) {}
 }
 
+/**
+ * @param {string} type
+ * @param {(event: any, ...args: any)=>any} fn
+ */
 function guard(type, fn) {
-	return async function(event, ...args) {
+	return async function(/** @type {Ty.Event.Outer<any>} */ event, /** @type {any} */ ...args) {
 		try {
 			return await fn(event, ...args)
 		} catch (e) {