changing switch/case to switch/when -- it's a better word

test/fixtures/execution/test_switch.cs

@@ -0,0 +1,11 @@
+num: 10
+
+result: switch num
+when 5 then false
+when 'a'
+  false
+when 10 then true
+when 11 then false
+else false.
+
+print(result)

test/fixtures/execution/test_switch.js

@@ -0,0 +1,16 @@
+(function(){
+  var num = 10;
+  var result;
+  if (num === 5) {
+    result = false;
+  } else if (num === 'a') {
+    result = false;
+  } else if (num === 10) {
+    result = true;
+  } else if (num === 11) {
+    result = false;
+  } else {
+    result = false;
+  }
+  print(result);
+})();