react-router/dist/development/lib/router/navigation.js

Declarative routing for React

/**
 * react-router v8.3.1
 *
 * Copyright (c) Remix Software Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE.md file in the root directory of this source tree.
 *
 * @license MIT
 */
//#region lib/router/navigation.ts
const DEFAULT_NAVIGATION_URL = new URL("http://localhost");
function getNavigatorCurrentUrl(navigator) {
	if (navigator.createURL) return navigator.createURL("/");
	try {
		return new URL(navigator.createHref("/"), DEFAULT_NAVIGATION_URL);
	} catch {
		return DEFAULT_NAVIGATION_URL;
	}
}
function isSameOrigin(a, b) {
	return a.origin === b.origin && (a.origin !== "null" || a.protocol === b.protocol && a.host === b.host);
}
function isExplicitUrl(destination, target) {
	if (destination.startsWith("//")) return true;
	let protocol = target.protocol.toLowerCase();
	if (!destination.toLowerCase().startsWith(protocol)) return false;
	return target.host === "" || destination.slice(protocol.length).startsWith("//");
}
function validateNavigationTarget(original, resolved, currentUrl, externalPolicy) {
	let originalUrl = null;
	try {
		originalUrl = original == null ? null : new URL(original, currentUrl);
	} catch {}
	let resolvedUrl = new URL(resolved, currentUrl);
	let originalIsExternal = originalUrl != null && !isSameOrigin(originalUrl, currentUrl);
	let resolvedIsExternal = !isSameOrigin(resolvedUrl, currentUrl);
	if (externalPolicy === "reject") {
		if (originalIsExternal || resolvedIsExternal) throw new Error("External navigation is not allowed");
	} else if (resolvedIsExternal) {
		if (originalUrl == null || !isExplicitUrl(original, originalUrl) || !isSameOrigin(originalUrl, resolvedUrl)) throw new Error("External navigation is not allowed");
	}
}
//#endregion
export { getNavigatorCurrentUrl, validateNavigationTarget };