next/dist/esm/shared/lib/router/utils/app-paths.js

The React Framework

import { ensureLeadingSlash } from '../../page-path/ensure-leading-slash';
import { isGroupSegment } from '../../segment';
/**
 * Normalizes an app route so it represents the actual request path. Essentially
 * performing the following transformations:
 *
 * - `/(dashboard)/user/[id]/page` to `/user/[id]`
 * - `/(dashboard)/account/page` to `/account`
 * - `/user/[id]/page` to `/user/[id]`
 * - `/account/page` to `/account`
 * - `/page` to `/`
 * - `/(dashboard)/user/[id]/route` to `/user/[id]`
 * - `/(dashboard)/account/route` to `/account`
 * - `/user/[id]/route` to `/user/[id]`
 * - `/account/route` to `/account`
 * - `/route` to `/`
 * - `/` to `/`
 *
 * @param route the app route to normalize
 * @returns the normalized pathname
 */ export function normalizeAppPath(route) {
    return ensureLeadingSlash(route.split('/').reduce((pathname, segment, index, segments)=>{
        // Empty segments are ignored.
        if (!segment) {
            return pathname;
        }
        // Groups are ignored.
        if (isGroupSegment(segment)) {
            return pathname;
        }
        // Parallel segments are ignored.
        if (segment[0] === '@') {
            return pathname;
        }
        // The last segment (if it's a leaf) should be ignored.
        if ((segment === 'page' || segment === 'route') && index === segments.length - 1) {
            return pathname;
        }
        return `${pathname}/${segment}`;
    }, ''));
}
/**
 * Comparator for sorting app paths so that parallel slot paths (containing
 * `/@`) come before the children/root page path. This ensures the last item
 * is always the children page, which is what `renderPageComponent` reads via
 * `appPaths[appPaths.length - 1]`.
 *
 * Without this, route group prefixes like `(group)` (char code 0x28) sort
 * before `@` (0x40), causing the children page to sort first instead of last
 * and leading to a manifest mismatch / 404 in webpack dev mode.
 */ export function compareAppPaths(a, b) {
    const aHasSlot = a.includes('/@');
    const bHasSlot = b.includes('/@');
    if (aHasSlot && !bHasSlot) return -1;
    if (!aHasSlot && bHasSlot) return 1;
    return a.localeCompare(b);
}
/**
 * Strips the `.rsc` extension if it's in the pathname.
 * Since this function is used on full urls it checks `?` for searchParams handling.
 */ export function normalizeRscURL(url) {
    return url.replace(/\.rsc($|\?)/, // $1 ensures `?` is preserved
    '$1');
}

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