---
title: Emoji
description: Type-safe, cross-platform emoji that automatically convert to each platform's format.
type: reference
---

The `emoji` helper provides cross-platform emoji that automatically convert to the correct format for each platform. On Slack, emoji render as `:shortcode:` format. On other platforms, they render as Unicode characters.

## Usage

```typescript title="lib/bot.ts" lineNumbers
import { emoji } from "chat";

await thread.post(`${emoji.thumbs_up} Great job!`);
// Slack: ":+1: Great job!"
// Teams/GChat/Discord: "👍 Great job!"
```

Emoji also work in reactions:

```typescript title="lib/bot.ts" lineNumbers
await sent.addReaction(emoji.check);

bot.onReaction(["thumbs_up", "heart", "fire"], async (event) => {
  if (!event.added) return;
  await event.adapter.addReaction(event.threadId, event.messageId, emoji.raised_hands);
});
```

## Available emoji

| Name | Emoji | Name | Emoji |
|------|-------|------|-------|
| `emoji.thumbs_up` | 👍 | `emoji.thumbs_down` | 👎 |
| `emoji.heart` | ❤️ | `emoji.smile` | 😊 |
| `emoji.laugh` | 😂 | `emoji.thinking` | 🤔 |
| `emoji.eyes` | 👀 | `emoji.fire` | 🔥 |
| `emoji.check` | ✅ | `emoji.x` | ❌ |
| `emoji.question` | ❓ | `emoji.party` | 🎉 |
| `emoji.rocket` | 🚀 | `emoji.star` | ⭐ |
| `emoji.wave` | 👋 | `emoji.clap` | 👏 |
| `emoji["100"]` | 💯 | `emoji.warning` | ⚠️ |
| `emoji.raised_hands` | 🙌 | `emoji.muscle` | 💪 |
| `emoji.ok_hand` | 👌 | `emoji.sad` | 😢 |
| `emoji.memo` | 📝 | `emoji.gear` | ⚙️ |
| `emoji.wrench` | 🔧 | `emoji.bug` | 🐛 |
| `emoji.calendar` | 📅 | `emoji.clock` | 🕐 |
| `emoji.sun` | ☀️ | `emoji.rainbow` | 🌈 |

For a one-off custom emoji, use `emoji.custom("name")`.

## Custom emoji

For workspace-specific emoji with full type safety, use `createEmoji()`:

```typescript title="lib/bot.ts" lineNumbers
import { createEmoji } from "chat";

const myEmoji = createEmoji({
  unicorn: { slack: "unicorn_face", gchat: "🦄" },
  company_logo: { slack: "company", gchat: "🏢" },
});

await thread.post(`${myEmoji.unicorn} Magic! ${myEmoji.company_logo}`);
// Slack: ":unicorn_face: Magic! :company:"
// GChat: "🦄 Magic! 🏢"
```

You can also extend the built-in emoji map with TypeScript module augmentation:

```typescript title="lib/emoji.d.ts" lineNumbers
declare module "chat" {
  interface CustomEmojiMap {
    my_custom: EmojiFormats;
  }
}
```