Convert emojihax to real emoji

src/d2m/converters/message-to-event.js

@@ -757,6 +757,11 @@ async function messageToEvent(message, guild, options = {}, di) {
 			}
 		}
 
+		// Scan the content for emojihax and replace them with real emojis
+		content = content.replaceAll(/\[([a-zA-Z0-9_-]{2,32})(?:~[0-9]+)?\]\(https:\/\/cdn\.discordapp\.com\/emojis\/([0-9]+)\.[^ \n)`]+\)/g, (_, name, id) => {
+			return `<:${name}:${id}>`
+		})
+
 		const {body, html} = await transformContent(content)
 		await addTextEvent(body, html, msgtype)
 	}

src/d2m/converters/message-to-event.test.js

@@ -1171,6 +1171,18 @@ test("message2event: emoji that hasn't been registered yet", async t => {
 	}])
 })
 
+test("message2event: emojihax", async t => {
+	const events = await messageToEvent(data.message.emojihax, data.guild.general, {})
+	t.deepEqual(events, [{
+		$type: "m.room.message",
+		"m.mentions": {},
+		msgtype: "m.text",
+		body: "I only violate the don't modify our console part of terms of service :troll:",
+		format: "org.matrix.custom.html",
+		formatted_body: `I only violate the don't modify our console part of terms of service <img data-mx-emoticon height="32" src="mxc://cadence.moe/bvVJFgOIyNcAknKCbmaHDktG" title=":troll:" alt=":troll:">`
+	}])
+})
+
 test("message2event: emoji triple long name", async t => {
 	const events = await messageToEvent(data.message.emoji_triple_long_name, data.guild.general, {})
 	t.deepEqual(events, [{