i18n.js

// Infrastructure required to use next-i18next for translations.

const NextI18Next = require('next-i18next').default;
const path = require('path');

const NextI18NextInstance = new NextI18Next({
    // More options here: https://github.com/isaachinman/next-i18next#options
    defaultLanguage: 'en',
    fallbackLng: 'en',
    // TODO(hannah): Restore when we have Spanish translations!
    // otherLanguages: ['es'],

    // Our custom set up was leading to 404 errors or build errors (when using
    // static/locales or just locales, respectively). Solution inspired by
    // https://github.com/isaachinman/next-i18next/issues/596
    localePath:
        typeof window === 'undefined'
            ? path.resolve('./static/locales')
            : path.resolve('./locales'),
});

// NOTE(hannah): We could export NextI18NextInstance directly, but this gives
// us a better idea of what we're making available / using.
const {i18n, appWithTranslation, withTranslation} = NextI18NextInstance;

module.exports = {
    i18n,
    appWithTranslation,
    withTranslation,
};