wuchale/dist/url.js

Protobuf-like i18n from plain code

import { compile, match } from "path-to-regexp";
export const localizeDefault = (url, loc) => {
    const localized = `/${loc}${url}`;
    if (!localized.endsWith('/')) {
        return localized;
    }
    return localized.slice(0, -1);
};
export const getLocaleDefault = (url, locales) => {
    let iSecondSlash = url.pathname.indexOf('/', 2);
    if (iSecondSlash === -1) {
        iSecondSlash = url.pathname.length;
    }
    const locale = url.pathname.slice(1, iSecondSlash);
    if (locales.includes(locale)) {
        return locale;
    }
    return null;
};
const getParams = (path, pattern) => {
    const matched = match(pattern, { decode: false })(path);
    if (!matched) {
        return;
    }
    return matched.params;
};
export const fillParams = (params, destPattern) => {
    const compiled = compile(destPattern, { encode: false });
    return compiled(params);
};
export function URLMatcher(manifest, locales) {
    const manifestWithLocales = manifest.map(([pattern, localized]) => {
        const locAndLocalizeds = locales.map((loc, i) => [loc, localized[i]]);
        return [
            pattern,
            locAndLocalizeds,
            Object.fromEntries(locAndLocalizeds),
        ];
    });
    return (url) => {
        for (const [pattern, locAndLocalizeds, altPatterns] of manifestWithLocales) {
            for (const [locale, locPattern] of locAndLocalizeds) {
                const params = getParams(url.pathname, locPattern);
                if (params) {
                    return { path: fillParams(params, pattern), locale, params, altPatterns };
                }
            }
        }
        for (const [pattern, , altPatterns] of manifestWithLocales) {
            const params = getParams(url.pathname, pattern);
            if (params) {
                return { path: fillParams(params, pattern), locale: null, params, altPatterns };
            }
        }
        return { path: null, locale: null, altPatterns: {}, params: {} };
    };
}