lr-i18n/dist/utils/pluralization.js

Allows to connect your `Laravel` Framework localization files with `React`.

import { getPluralIndex } from '../contrib/get-plural-index';
/**
 * Select a proper translation string based on the given number.
 *
 * @param message
 * @param number
 * @param locale
 */
export default function pluralization(message, number, locale) {
    let segments = message.split('|');
    const extracted = extract(segments, number);
    if (extracted !== null) {
        return extracted.trim();
    }
    segments = stripConditions(segments);
    const pluralIndex = getPluralIndex(locale, number);
    return segments.length === 1 || !segments[pluralIndex] ? segments[0] : segments[pluralIndex];
}
/**
 * Extract a translation string using inline conditions.
 *
 * @param segments
 * @param number
 */
function extract(segments, number) {
    let result = null;
    segments.forEach((segment) => {
        if (result !== null)
            return;
        result = extractFromString(segment, number);
    });
    return result;
}
/**
 * Get the translation string if the condition matches.
 *
 * @param part
 * @param number
 */
function extractFromString(part, number) {
    const matches = part.match(/^[{[]([^,{}\[\]]*),?([^{}\[\]]*)[}\]]([\s\S]*)/);
    if (!matches)
        return null;
    const [, from, to, value] = matches;
    if ((from === '*' || number >= parseFloat(from)) && (to === '*' || number <= parseFloat(to))) {
        return value;
    }
    return from && parseFloat(from) === number ? value : null;
}
/**
 * Strip the inline conditions from each segment, just leaving the text.
 *
 * @param segments
 */
function stripConditions(segments) {
    return segments.map((part) => part.replace(/^[{[]([^[\]{}]*)[}\]]/, ''));
}