next/dist/esm/shared/lib/page-path/get-page-paths.js

The React Framework

import { denormalizePagePath } from './denormalize-page-path';
import path from '../isomorphic/path';
/**
 * Calculate all possible pagePaths for a given normalized pagePath along with
 * allowed extensions. This can be used to check which one of the files exists
 * and to debug inspected locations.
 *
 * For pages, map `/route` to [`/route.[ext]`, `/route/index.[ext]`]
 * For app paths, map `/route/page` to [`/route/page.[ext]`] or `/route/route`
 * to [`/route/route.[ext]`]
 *
 * @param normalizedPagePath Normalized page path (it will denormalize).
 * @param extensions Allowed extensions.
 */ export function getPagePaths(normalizedPagePath, extensions, isAppDir) {
    const page = denormalizePagePath(normalizedPagePath);
    let prefixes;
    if (isAppDir) {
        prefixes = [
            page
        ];
    } else if (normalizedPagePath.endsWith('/index')) {
        prefixes = [
            path.join(page, 'index')
        ];
    } else {
        prefixes = [
            page,
            path.join(page, 'index')
        ];
    }
    const paths = [];
    for (const extension of extensions){
        for (const prefix of prefixes){
            paths.push(prefix + "." + extension);
        }
    }
    return paths;
}

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