Test

types/emoji.js

@@ -7,6 +7,7 @@ class EmojiArgumentType extends ArgumentType {
 	}
 
 	validate(value, msg) {
+		if (!value) return false;
 		const matches = value.match(/^(?:<:([a-zA-Z0-9_]+):)?([0-9]+)>?$/);
 		if (matches && msg.client.emojis.has(matches[2])) return true;
 		if (!msg.guild) return false;

types/image.js

@@ -0,0 +1,30 @@
+const { ArgumentType } = require('discord.js-commando');
+
+class ImageArgumentType extends ArgumentType {
+	constructor(client) {
+		super(client, 'image');
+	}
+
+	async validate(value, msg) {
+		const attachment = msg.attachments.first();
+		if (!attachment) {
+			const valid = await this.client.registry.types.get('user').validate(value, msg);
+			return valid;
+		}
+		if (!attachment.height || !attachment.width) return false;
+		if (attachment.size > 8e+6) return false;
+		return true;
+	}
+
+	parse(value, msg) {
+		if (!msg.attachments.size) {
+			return this.client.registry.types.get('user').parse(value, msg).displayAvatarURL({
+				format: 'png',
+				size: 512
+			});
+		}
+		return msg.attachments.first().url;
+	}
+}
+
+module.exports = ImageArgumentType;