@sls-next/core/dist/module/route/basepath.js

Handles Next.js routing independent of provider

export const normalise = (uri, routesManifest) => {
    const { basePath } = routesManifest;
    if (basePath) {
        if (uri.startsWith(basePath)) {
            uri = uri.slice(basePath.length);
        }
        else {
            // basePath set but URI does not start with basePath, return original path with special flag indicating missing expected base path
            // but basePath is expected
            return { normalisedUri: uri, missingExpectedBasePath: true };
        }
    }
    // Remove trailing slash for all paths
    if (uri.endsWith("/")) {
        uri = uri.slice(0, -1);
    }
    // Empty path should be normalised to "/" as there is no Next.js route for ""
    return {
        normalisedUri: uri === "" ? "/" : uri,
        missingExpectedBasePath: false
    };
};