🍞 burnt

Cross-platform toasts for React Native, powered by native elements.

Simulator.-.iPhone.13.Pro.Max.-.16.November.2022.3.mp4

Context

See this Twitter thread.

What

This is a library with a toast and alert method for showing ephemeral UI.

On iOS, it wraps SPIndicator and SPAlert.

On Android, it wraps ToastAndroid from react-native. Burnt.alert() falls back to Burnt.toast() on Android.

Burnt works with both the old & new architectures. It's built on top of JSI, thanks to Expo's new module system.

Features

• Simple, imperative toast that uses native components under the hood, rather than using React state with JS-based UI.
• Animated icons
• iOS App Store-like alert popups
• Overlays on top of native iOS modals, unlike JS-based solutions (video)[https://twitter.com/FernandoTheRojo/status/1593632122069291008].

Usage

import * as Burnt from "burnt";

Burnt.toast({
  title: "Burnt installed.",
  preset: "done",
  message: "See your downloads.",
});

You can also Burnt.alert() and Burnt.dismissAllAlerts().

TODO

• iOS support
• Android support
• Web support (could be cool to use Radix UI...but maybe I'll leave that part up to Zeego)
• Custom iOS icons

Chances are, I'll keep this lib to iOS & Android only, and then another library can consume it to build a broader API out on the JS side with Web support, such as Zeego.

Installation

yarn add burnt

Expo

Burnt likely requires Expo SDK 46+.

expo install burnt expo-build-properties

Add the expo-build-properties plugin to your app.json/app.config.js, setting the deployment target to 13.0 (or higher):

export default {
  plugins: [
    [
      "expo-build-properties",
      {
        ios: {
          deploymentTarget: "13.0",
        },
      },
    ],
  ],
};

Then, you'll need to rebuild your dev client. Burnt will not work in Expo Go.

npx expo prebuild --clean
npx expo run:ios

The config plugin ensures that your iOS app has at least iOS 13 as a deployment target, which is required for Burnt (as well as Expo SDK 47+).

Plain React Native

pod install

Solito

cd applications/app
expo install burnt expo-build-properties
npx expo prebuild --clean
npx expo run:ios
cd ../..
yarn

Be sure to follow the expo instructions too.

API

toast

Simulator.-.iPhone.13.Pro.Max.-.16.November.2022.mp4

The API changed since recording this video. It now uses object syntax.

toast(options): Promise<void>

Burnt.toast({
  title: 'Congrats!', // required

  preset: 'done',     // or "error"

  message: '',        // optional

  haptic: 'none'      // or "success", "warning", "error"

  duration: 2         // duration in seconds

  shouldDismissByDrag: true,

  from: 'bottom', // ios only, "top" or "bottom"

  // optionally customize layout
  layout: {
    iconSize: {
      height: 24,
      width: 24,
    },

    // TODO: custom SF Symbols...
  },
})

alert

Simulator.-.iPhone.13.Pro.Max.-.16.November.2022.2.mp4

The API changed since recording this video. It now uses object syntax.

alert(options): Promise<void>

import * as Burnt from "burnt";

export const alert = () => {
  Burnt.alert({
    title: "Congrats!", // required

    preset: "done", // or "error", "heart"

    message: "", // optional

    duration: 2, // duration in seconds

    // optionally customize layout
    layout: {
      iconSize: {
        height: 24,
        width: 24,
      },
      // TODO: custom SF Symbols...
    },
  });
};

dismissAllAlerts()

Does what you think it does! In the future, I'll allow async spinners for promises, and it'll be useful then.

Contribute

yarn build
cd example
npx expo run:ios # do this again whenever you change native code

You can edit the iOS files in ios/, and then update the JS accordingly in src.

Thanks

Special thanks to Tomasz Sapeta for offering help along the way.

Expo Modules made this so easy to build, and all with Swift – no Objective C. It's my first time writing Swift, and it was truly a breeze.