Local splitmessage

util/Util.js

@@ -408,4 +408,33 @@ module.exports = class Util {
 		if (spoilers !== 0 && (spoilers && (spoilers % 2))) clean += '||';
 		return clean;
 	}
+
+	static splitMessage(text, { maxLength = 2000, char = '\n', prepend = '', append = '' } = {}) {
+		text = Util.verifyString(text);
+		if (text.length <= maxLength) return [text];
+		let splitText = [text];
+		if (Array.isArray(char)) {
+			while (char.length > 0 && splitText.some(elem => elem.length > maxLength)) {
+				const currentChar = char.shift();
+				if (currentChar instanceof RegExp) {
+					splitText = splitText.flatMap(chunk => chunk.match(currentChar));
+				} else {
+					splitText = splitText.flatMap(chunk => chunk.split(currentChar));
+				}
+			}
+		} else {
+			splitText = text.split(char);
+		}
+		if (splitText.some(elem => elem.length > maxLength)) throw new RangeError('SPLIT_MAX_LEN');
+		const messages = [];
+		let msg = '';
+		for (const chunk of splitText) {
+			if (msg && (msg + char + chunk + append).length > maxLength) {
+				messages.push(msg + append);
+				msg = prepend;
+			}
+			msg += (msg && msg !== prepend ? char : '') + chunk;
+		}
+		return messages.concat(msg).filter(m => m);
+	}
 };