Can't press enter to send a chat

[authorisation]

Pressing enter creates a newline instead of sending the message.

[nrmu9]

same issue

[aero-the-synaptic-electrician]

I've made an update to this project to fix this issue (where "keydown" events are ignored) and to bypass the snap read reciept.

Here's the updated userscript (in JS rather than TS that the developers compile from.).

// ==UserScript==
// @name         SnapEnhance Web
// @namespace    snapenhance-web
// @description  A userscript to Enhance the User experience on Snapchat Web
// @version      1.1.1
// @author       SnapEnhance
// @source       https://github.com/SnapEnhance/web/
// @license      GPL-3.0-only
// @supportURL   https://github.com/SnapEnhance/web/issues
// @updateURL    https://github.com/SnapEnhance/web/releases/latest/download/snapenhance.user.js
// @match        *://web.snapchat.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=snapchat.com
// @grant        unsafeWindow
// @run-at       document-start
// ==/UserScript==

((window) => {
	const simpleHook = (object, name, proxy) => {
		const old = object[name];
		object[name] = proxy(old, object);
	}

	// Bypass upload size
	Object.defineProperty(File.prototype, "size", {
		get: function() {
			return 500;
		}
	});

	// Hook main window requests
	const oldWindowFetch = window.fetch;
	window.fetch = (...args) => {
		const url = args[0].url;
		if (typeof url === "string") {
			if (url.endsWith("readreceipt-indexer/batchuploadreadreceipts")) {
				console.log("Bypassed story read receipt");
				return new Promise((resolve) => resolve(new Response(null, {
					status: 200
				})));
			}
		}
		return oldWindowFetch(...args);
	};

	// Inject into worker
	function workerInjected() {
		const hookPreRequest = (request) => {
			if (request.url.endsWith("messagingcoreservice.MessagingCoreService/SendTypingNotification")) {
				console.log("Bypassed typing notification");
				return null;
			}

			if (request.url.endsWith("messagingcoreservice.MessagingCoreService/UpdateConversation")) {
				console.log("Bypassed conversation read receipt");
				return null;
			}

			if (request.url.endsWith("messagingcoreservice.MessagingCoreService/UpdateContentMessage")) {
				console.log("Bypassed snap read reciept");
				return null;
			}

			return request;
		}

		const hookPostRequest = async (request, response) => {
			if (request.headers && request.headers.get("content-type") === "application/grpc-web+proto") {
				const arrayBuffer = await response.arrayBuffer();
				response.arrayBuffer = async () => arrayBuffer;
			}
			return response;
		}

		// Hook websocket (hide bitmoji)
		WebSocket.prototype.send = new Proxy(WebSocket.prototype.send, {
			apply: function(target, thisArg, argumentsList) {
				// console.log("WebSocket send", argumentsList[0]);
				// return target.apply(thisArg, argumentsList);
			}
		});

		// Hook worker web requests
		const oldFetch = fetch;
		// @ts-ignore
		// eslint-disable-next-line no-implicit-globals
		fetch = async (...args) => {
			args[0] = hookPreRequest(args[0]);

			if (args[0] == null) {
				return new Promise((resolve) => resolve(new Response(null, {
					status: 200
				})));
			}

			const requestBody = args[0].body;
			if (requestBody && !requestBody.locked) {
				const buffer = await requestBody.getReader().read();
				args[0] = new Request(args[0], {
					body: buffer.value,
					headers: args[0].headers
				});
			}

			// @ts-ignore
			const result = oldFetch(...args);
			return new Promise(async (resolve, reject) => {
				try {
					resolve(await hookPostRequest(args[0], await result));
				} catch (e) {
					console.info("Fetch error", e);
					reject(e);
				}
			});
		};
	}

	const oldBlobClass = window.Blob;
	window.Blob = class HookedBlob extends Blob {
		constructor(...args) {
			const data = args[0][0];
			if (typeof data === "string" && data.startsWith("importScripts")) {
				args[0][0] += workerInjected.toString() + 'workerInjected();';
				window.Blob = oldBlobClass;
			}
			super(...args);
		}
	};

	simpleHook(document, "createElement", (proxy, instance) => (...args) => {
		const result = proxy.call(instance, ...args);

		// Allow audio note and image download
		if (args[0] === "audio" || args[0] === "video" || args[0] === "img") {
			simpleHook(result, "setAttribute", (proxy2, instance2) => (...args2) => {
				result.style = "pointer-events: auto;";
				if (args2[0] === "controlsList") return;
				proxy2.call(instance2, ...args2);
			});
			result.addEventListener("load", (_) => {
				result.parentElement?.addEventListener("contextmenu", (event) => {
					event.stopImmediatePropagation();
				});
			});
			result.addEventListener("contextmenu", (event) => {
				event.stopImmediatePropagation();
			});
		}

		return result;
	});

	// Always focused
	simpleHook(document, "hasFocus", () => () => true);
	const oldAddEventListener = EventTarget.prototype.addEventListener;
	Object.defineProperty(EventTarget.prototype, "addEventListener", {
		value: function(...args) {
			const eventName = args[0];
			if (eventName === "focus") return;
			return oldAddEventListener.call(this, ...args);
		}
	});
})(window.unsafeWindow || window);