Cordless script to log deleted messages into the console.

never-delete.js

var MAX_CACHE_SIZE = 50;
var messages = [];

function onMessageReceive(message) {
	if (messages.length >= MAX_CACHE_SIZE) messages.shift();
	messages.push(message);
}

function onMessageDelete(message){
  var msg = getMessageById(message.ID);
  if (msg) {
  	var content = msg.Content;
  	var author = msg.Author.Username;
  	return printLineToConsole(author + ": " + content);
  }
  printLineToConsole("Cannot find deleted message with id: " + message.ID);
}

function getMessageById(id){
  for (var i = messages.length - 1; i >= 0; i--) {
    if (messages[i].ID === id) return messages[i];
  }
  return false;
}