Expose isMobile to browser info (#6675)

* feat: expose isMobile to info

* feat: allow access browser info from $tw.browser

* fix: adapt typo

* refactor: only export selected properties

 Jermolene 5 hours ago

The trouble is that the properties of bowser.browser are not under our direct control, and so subsequent updates to Bowser might overwrite important properties of our own. I'd rather explicitly import the properties that we choose to support.

* refactor: put things into `is`

plugins/tiddlywiki/browser-sniff/browser.js

@@ -42,8 +42,12 @@ exports.getInfoTiddlerFields = function() {
 				["is/sailfish","sailfish"],
 				["is/android","android"],
 				["is/windowsphone","windowsphone"],
-				["is/firefoxos","firefoxos"]
+				["is/firefoxos","firefoxos"],
+				["is/mobile","mobile"]
 			];
+		$tw.browser = $tw.utils.extend($tw.browser, {
+			is: bowser.browser,
+		});
 		$tw.utils.each(mappings,function(mapping) {
 			var value = bowser.browser[mapping[1]];
 			if(value === undefined) {