feat: add Ladybird browser support (#627)

test/acceptance/useragentstrings.yml

@@ -3478,6 +3478,22 @@
         engine:
           name: "WebKit"
           version: "537.42"
+  Ladybird:
+    -
+      ua: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) Ladybird/1.0 Chrome/146.0.0.0 AppleWebKit/537.36 Safari/537.36"
+      spec:
+        browser:
+          name: "Ladybird"
+          version: "1.0"
+        os:
+          name: "macOS"
+          version: "10.15.7"
+          versionName: "Catalina"
+        platform:
+          type: "desktop"
+          vendor: "Apple"
+        engine:
+          name: "LibWeb"
   SlimerJS:
     -
       ua: "Mozilla/5.0 (X11; Linux x86_64; rv:21.0) Gecko/20100101 SlimerJS/0.7"

test/unit/parser.js

@@ -75,6 +75,14 @@ test('Parser.getEngineName gives a lower-cased name of the engine', (t) => {
   t.is(parser.getEngineName(true), 'blink');
 });
 
+test('Parser prioritizes browser-specific engines over generic UA tokens', (t) => {
+  const ladybirdUA = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) Ladybird/1.0 Gecko/20100101 Chrome/146.0.0.0 AppleWebKit/537.36 Safari/537.36';
+  const ladybirdParser = new Parser(ladybirdUA);
+
+  t.is(ladybirdParser.getBrowserName(), 'Ladybird');
+  t.is(ladybirdParser.getEngineName(), 'LibWeb');
+});
+
 test('Skip parsing shouldn\'t parse', (t) => {
   t.deepEqual((new Parser(UA, true)).getResult(), {});
 });