Makes the webpack build use relative paths to allow for deploying on web subdirectories

server/scripts/modules/utils/base-path.mjs

@@ -0,0 +1,25 @@
+const normalizeBasePath = (pathname) => {
+	if (!pathname) return '/';
+	if (pathname.endsWith('/index.html')) {
+		const trimmed = pathname.slice(0, -'index.html'.length);
+		return trimmed.endsWith('/') ? trimmed : `${trimmed}/`;
+	}
+	if (pathname.endsWith('/')) return pathname;
+	const lastSlash = pathname.lastIndexOf('/');
+	if (lastSlash === -1) return '/';
+	return `${pathname.slice(0, lastSlash + 1)}`;
+};
+
+const getBasePath = () => normalizeBasePath(window.location.pathname);
+
+const withBasePath = (relativePath = '') => {
+	const sanitizedPath = relativePath.replace(/^\/+/, '');
+	const basePath = getBasePath();
+	if (basePath === '/') return `/${sanitizedPath}`;
+	return `${basePath}${sanitizedPath}`;
+};
+
+export {
+	getBasePath,
+	withBasePath,
+};