schnee effeckt und fehler Korektur

node_modules/normalize-url/index.js

@@ -0,0 +1,163 @@
+'use strict';
+const url = require('url');
+const punycode = require('punycode');
+const queryString = require('query-string');
+const prependHttp = require('prepend-http');
+const sortKeys = require('sort-keys');
+
+const DEFAULT_PORTS = {
+	'http:': 80,
+	'https:': 443,
+	'ftp:': 21
+};
+
+// Protocols that always contain a `//`` bit
+const slashedProtocol = {
+	http: true,
+	https: true,
+	ftp: true,
+	gopher: true,
+	file: true,
+	'http:': true,
+	'https:': true,
+	'ftp:': true,
+	'gopher:': true,
+	'file:': true
+};
+
+function testParameter(name, filters) {
+	return filters.some(filter => filter instanceof RegExp ? filter.test(name) : filter === name);
+}
+
+module.exports = (str, opts) => {
+	opts = Object.assign({
+		normalizeProtocol: true,
+		normalizeHttps: false,
+		stripFragment: true,
+		stripWWW: true,
+		removeQueryParameters: [/^utm_\w+/i],
+		removeTrailingSlash: true,
+		removeDirectoryIndex: false,
+		sortQueryParameters: true
+	}, opts);
+
+	if (typeof str !== 'string') {
+		throw new TypeError('Expected a string');
+	}
+
+	const hasRelativeProtocol = str.startsWith('//');
+
+	// Prepend protocol
+	str = prependHttp(str.trim()).replace(/^\/\//, 'http://');
+
+	const urlObj = url.parse(str);
+
+	if (opts.normalizeHttps && urlObj.protocol === 'https:') {
+		urlObj.protocol = 'http:';
+	}
+
+	if (!urlObj.hostname && !urlObj.pathname) {
+		throw new Error('Invalid URL');
+	}
+
+	// Prevent these from being used by `url.format`
+	delete urlObj.host;
+	delete urlObj.query;
+
+	// Remove fragment
+	if (opts.stripFragment) {
+		delete urlObj.hash;
+	}
+
+	// Remove default port
+	const port = DEFAULT_PORTS[urlObj.protocol];
+	if (Number(urlObj.port) === port) {
+		delete urlObj.port;
+	}
+
+	// Remove duplicate slashes
+	if (urlObj.pathname) {
+		urlObj.pathname = urlObj.pathname.replace(/\/{2,}/g, '/');
+	}
+
+	// Decode URI octets
+	if (urlObj.pathname) {
+		urlObj.pathname = decodeURI(urlObj.pathname);
+	}
+
+	// Remove directory index
+	if (opts.removeDirectoryIndex === true) {
+		opts.removeDirectoryIndex = [/^index\.[a-z]+$/];
+	}
+
+	if (Array.isArray(opts.removeDirectoryIndex) && opts.removeDirectoryIndex.length > 0) {
+		let pathComponents = urlObj.pathname.split('/');
+		const lastComponent = pathComponents[pathComponents.length - 1];
+
+		if (testParameter(lastComponent, opts.removeDirectoryIndex)) {
+			pathComponents = pathComponents.slice(0, pathComponents.length - 1);
+			urlObj.pathname = pathComponents.slice(1).join('/') + '/';
+		}
+	}
+
+	// Resolve relative paths, but only for slashed protocols
+	if (slashedProtocol[urlObj.protocol]) {
+		const domain = urlObj.protocol + '//' + urlObj.hostname;
+		const relative = url.resolve(domain, urlObj.pathname);
+		urlObj.pathname = relative.replace(domain, '');
+	}
+
+	if (urlObj.hostname) {
+		// IDN to Unicode
+		urlObj.hostname = punycode.toUnicode(urlObj.hostname).toLowerCase();
+
+		// Remove trailing dot
+		urlObj.hostname = urlObj.hostname.replace(/\.$/, '');
+
+		// Remove `www.`
+		if (opts.stripWWW) {
+			urlObj.hostname = urlObj.hostname.replace(/^www\./, '');
+		}
+	}
+
+	// Remove URL with empty query string
+	if (urlObj.search === '?') {
+		delete urlObj.search;
+	}
+
+	const queryParameters = queryString.parse(urlObj.search);
+
+	// Remove query unwanted parameters
+	if (Array.isArray(opts.removeQueryParameters)) {
+		for (const key in queryParameters) {
+			if (testParameter(key, opts.removeQueryParameters)) {
+				delete queryParameters[key];
+			}
+		}
+	}
+
+	// Sort query parameters
+	if (opts.sortQueryParameters) {
+		urlObj.search = queryString.stringify(sortKeys(queryParameters));
+	}
+
+	// Decode query parameters
+	if (urlObj.search !== null) {
+		urlObj.search = decodeURIComponent(urlObj.search);
+	}
+
+	// Take advantage of many of the Node `url` normalizations
+	str = url.format(urlObj);
+
+	// Remove ending `/`
+	if (opts.removeTrailingSlash || urlObj.pathname === '/') {
+		str = str.replace(/\/$/, '');
+	}
+
+	// Restore relative protocol, if applicable
+	if (hasRelativeProtocol && !opts.normalizeProtocol) {
+		str = str.replace(/^http:\/\//, '//');
+	}
+
+	return str;
+};