Storybook react-intl addon

Add react-intl support to Storybook.

Required Versions:

• storybook - ^8.0.0
• react-intl - ^5.24.0 || ^6.0.0

This Storybook addon assumes your project is already set up with react-intl, and that it is properly configured and working.

Installation

This addon should be added as a dev dependency.

npm i -D storybook-react-intl

yarn add -D storybook-react-intl

You will need to install react-intl as a dependency of your project if it is not already installed.

npm i -S react-intl

yarn add react-intl

Usage

After installing, follow these steps to enable this addon in Storybook.

main.ts

Insert this addon into your addons array:

{
  addons: [
    // other addons...
    'storybook-react-intl',
  ]
}

reactIntl.ts

Create a file in your .storybook folder called reactIntl.ts (or whatever you like). This is where you will set up your react-intl configuration.

In this file, copy and paste the below code and make whatever modifications you need.

const locales = ['en', 'de'];

const messages = locales.reduce((acc, lang) => ({
  ...acc,
  [lang]: require(`../locale/${lang}.json`), // whatever the relative path to your messages json is
}), {});

const formats = {}; // optional, if you have any formats

export const reactIntl = {
  defaultLocale: 'en',
  locales,
  messages,
  formats,
};

preview.ts

In your preview.ts, you need to add the locales and locale to globals, as well as add reactIntl that you exported from the above file to parameters.

locales is an object where the keys are the "ids" of the locales/languages and the values are the names you want to display in the dropdown.

locale is the default locale, which can be read from reactIntl or set manually if you choose.

import {reactIntl} from './reactIntl';

const preview: Preview = {
    globals: {
        locale: reactIntl.defaultLocale,
        locales: {
            en: 'English',
            de: 'Deutsche',  
        },
    },
    parameters: {
        reactIntl,
    }
};

export default preview;

You can also set locales to Storybook compatible objects as documented in the storybook-i18n addon (which is included as part of this addon).

import {reactIntl} from './reactIntl';

const preview: Preview = {
    globals: {
        locale: reactIntl.defaultLocale,
        locales: {
            en: {icon: '🇺🇸', title: 'English', right: 'EN'},
            fr: {icon: '🇫🇷', title: 'Français', right: 'FR'},
            ja: {icon: '🇯🇵', title: '日本語', right: 'JP'},
        },
    },
    parameters: {
        reactIntl,
    }
};

export default preview;

Story Parameters Locale

If you want to have a story use a specific locale, set it in that Story's parameters.

export const Default: StoryObj = {
    render: () => <YourComponent/>,
};

export const Japanese: StoryObj = {
    parameters: {
        locale: 'ja',
    },
    render: () => <YourComponent/>,
};

Note that doing this switches the current locale to the parameter one, so when you change to a story without a parameter, it will stay at the last selected locale.

In the above example, if you view the Japanese story and then click back on the Default story, the locale will stay ja.

Once you have finished these steps and launch storybook, you should see a globe icon in the toolbar.

Clicking this globe icon will show a dropdown with the locales you defined.

Switching locales will use the strings defined in your messages.