[RNMobile] Fix isURL

packages/url/src/is-url.native.js

@@ -0,0 +1,18 @@
+const URL_REGEXP = /((([A-Za-z]{3,9}:(?:\/\/)?)(?:[\-;:&=\+\$,\w]+@)?[A-Za-z0-9\.\-]+|(?:www\.|[\-;:&=\+\$,\w]+@)[A-Za-z0-9\.\-]+)(?::\d{2,5})?((?:\/[\+~%\/\.\w\-_]*)?\??(?:[\-\+=&;%@\.\w_]*)#?(?:[\.\!\/\\\w]*))?)/i;
+
+/**
+ * Determines whether the given string looks like a URL.
+ *
+ * @param {string} url The string to scrutinise.
+ *
+ * @example
+ * ```js
+ * const isURL = isURL( 'https://wordpress.org' ); // true
+ * ```
+ *
+ * @return {boolean} Whether or not it looks like a URL.
+ */
+export function isURL( url ) {
+	const match = url.match( URL_REGEXP );
+	return match !== null && match.length >= 1 && match[ 0 ] === url;
+}

packages/url/src/test/index.native.js

@@ -0,0 +1,33 @@
+/**
+ * Internal dependencies
+ */
+import { isURL } from '../';
+
+describe( 'isURL', () => {
+	it.each( [
+		[ 'http://wordpress.org' ],
+		[ 'https://wordpress.org' ],
+		[ 'HTTPS://WORDPRESS.ORG' ],
+		[ 'https://wordpress.org/./foo' ],
+		[ 'https://wordpress.org/path?query#fragment' ],
+		[ 'https://localhost/foo#bar' ],
+		[ 'mailto:[email protected]' ],
+		[ 'ssh://user:[email protected]:8080' ],
+	] )( 'valid (true): %s', ( url ) => {
+		expect( isURL( url ) ).toBe( true );
+	} );
+
+	it.each( [
+		[ 'http://word press.org' ],
+		[ 'http://wordpress.org:port' ],
+		[ 'http://[wordpress.org]/' ],
+		[ 'HTTP: HyperText Transfer Protocol' ],
+		[ 'URLs begin with a http:// prefix' ],
+		[ 'Go here: http://wordpress.org' ],
+		[ 'http://' ],
+		[ 'hello' ],
+		[ '' ],
+	] )( 'invalid (false): %s', ( url ) => {
+		expect( isURL( url ) ).toBe( false );
+	} );
+} );