feat(core parser): Also convert on/off values to boolean for boolean arguments.

Author: thet

src/core/parser.js

@@ -161,7 +161,8 @@ class ArgumentParser {
                                     value === "true" ||
                                     value === "y" ||
                                     value === "yes" ||
-                                    value === "y";
+                                    value === "y" ||
+                                    value === "on";
                         } else if (typeof value === "number") {
                             value = !!value;
                         } else {

src/core/parser.test.js

@@ -782,6 +782,18 @@ describe("The Patterns parser", function () {
                 parser.addArgument("value", false);
                 expect(parser._coerce("value", "unknown")).toBe(false);
             });
+
+            it("String with on", function () {
+                var parser = new ArgumentParser();
+                parser.addArgument("value", false);
+                expect(parser._coerce("value", "on")).toBe(true);
+            });
+
+            it("String with off", function () {
+                var parser = new ArgumentParser();
+                parser.addArgument("value", false);
+                expect(parser._coerce("value", "off")).toBe(false);
+            });
         });
 
         describe("Convert to number", function () {