@lingui/cli/dist/api/catalog/getFallbackListForLocale.js

Lingui CLI to extract messages, compile catalogs, and manage translation workflows

export function getFallbackListForLocale(fallbackLocales, locale) {
    const fL = [];
    if (fallbackLocales?.[locale]) {
        const mapping = fallbackLocales?.[locale];
        Array.isArray(mapping) ? fL.push(...mapping) : fL.push(mapping);
    }
    if (typeof fallbackLocales?.default === "string" &&
        locale !== fallbackLocales?.default) {
        fL.push(fallbackLocales.default);
    }
    return fL;
}