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SimpleSignals is no longer maintained.

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1.3.1 • Public • Published


A Roblox-TS RemoteEvent/RemoteFunction/BindableEvent wrapper which puts and end to the hassle of managing events. You can get straight to connecting and firing without any WaitForChild/ boilerplate, while your event instances get created automatically in the background.


The event instances get created for you as you connect and fire

Example: working with an event called "z"

SimpleClient.on("z", callbackFunc)

gets called on the client, but z doesn't exist. SimpleSignals will WaitForChild("z") on the event folder, and when the event gets created on the server, it connects callbackFunc to it.
But how do events get created?
Any time you call a z RemoteEvent related function on the server (on(z, once(z, fire(z), a RemoteEvent with name z gets created - if such a RemoteEvent doesn't exist. RemoteEvents/RemoteFunctions cannot be created on the client.

The same process follows for RemoteFunctions and BindableEvents (note that BindableEvents aren't parented anywhere).

You can import the module this way on the server:

import { Server as SimpleSignals } from "@rbxts/simplesignals";

and on the client:

import { Client as SimpleSignals } from "@rbxts/simplesignals";

SimpleSignals manages events cleanly, without you having to instantiate or to WaitForChild:

SimpleClient.on("printX", (player, x) => {
});"printX", "X");

You never have to create objects you only use once:

const printX = new Instance("RemoteEvent");
printX.Name = "printX";
printX.Parent = game.GetService("ReplicatedStorage");

printX.OnServerEvent.Connect((player, x) => {
const printX = game.GetService("ReplicatedStorage").WaitForChild("printX");

Using the created instances outside of SimpleSignals

The following table describes where each event is stored:

Event type Game location Folder name Path
RemoteEvent ReplicatedStorage RemoteEvents game.ReplicatedStorage.RemoteEvents
RemoteFunction ReplicatedStorage RemoteFunctions game.ReplicatedStorage.RemoteFunctions
BindableEvent none*

*BindableEvents aren't parented anywhere. They're stored in an internal table.


  • Simple:on(name: string, callback: Function) → Promise<RBXScriptConnection>
  • Simple:once(name: string, callback: Function) → Promise<void>
  • Simple:fire(name: string, ...args) → void
  • Simple:fireAllClients(name: string, ...args) → void (only on the server)
  • Simple:register(name: string) → void (only on the server)
  • Simple:setCallback(name: string, callback: Function) → Promise<void>
  • Simple:invoke<T>(name: string, ...args) → Promise<T>
  • Simple:registerFunction(name: string) → void (only on the server)
  • Simple:onBindable(name: string, callback: Function) → RBXScriptConnection
  • Simple:onceBindable(name: string, callback: Function) → void
  • Simple:fireBindable(name: string, ...args) → void
  • new BindableRef<[T1, T2, ...]>() → BindableRef
  • BindableRef:connect(callback: Function) → RBXScriptConnection
  • BindableRef:fire(...args: [T1, T2, ...]) → void

The library also has JSDoc comments provided.


Redeem a code for a reward

import { Server as simple } from "@rbxts/simplesignals";

const rewards = {
	"ABC123": 500,
	"1thousand": 1000
simple.on("redeemCode", (player, code: string) => {
	const reward = rewards[code];
	if (reward) {
		print(`${player.Name} just got ${reward} Coins!`);
import { Client as simple } from "@rbxts/simplesignals";
import { Players } from "@rbxts/services";
const LocalPlayer = Players.LocalPlayer;

const screenGui = new Instance("ScreenGui");
screenGui.Parent = LocalPlayer.WaitForChild("PlayerGui") as Folder;
const textBox = new Instance("TextBox");
textBox.Position = UDim2.fromScale(0.5, 0.5);
textBox.Parent = screenGui;

textBox.FocusLost.Connect(enterPressed => {
	if (enterPressed)"redeemCode", textBox.Text);


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