JS backend: fix "is Boolean" check.

js/js.tests/test/org/jetbrains/k2js/test/semantics/RTTITest.java

@@ -51,4 +51,8 @@ public class RTTITest extends SingleFileTranslationTest {
     public void testStdlibEmptyListClass() throws Exception {
         checkFooBoxIsOk();
     }
+
+    public void testIsJsPrimitiveType() throws Exception {
+        checkFooBoxIsOk();
+    }
 }

js/js.translator/src/org/jetbrains/k2js/translate/expression/PatternTranslator.java

@@ -93,6 +93,9 @@ public final class PatternTranslator extends AbstractTranslator {
         if (NamePredicate.STRING.apply(typeName)) {
             jsSTypeName = "string";
         }
+        else if (NamePredicate.BOOLEAN.apply(typeName)) {
+            jsSTypeName = "boolean";
+        }
         else if (NamePredicate.LONG.apply(typeName)) {
             return JsAstUtils.isLong(expressionToMatch);
         }

js/js.translator/src/org/jetbrains/k2js/translate/intrinsic/functions/patterns/NamePredicate.java

@@ -59,6 +59,9 @@ public final class NamePredicate implements Predicate<Name> {
     @NotNull
     public static final NamePredicate NUMBER = new NamePredicate("Number");
 
+    @NotNull
+    public static final NamePredicate BOOLEAN = new NamePredicate("Boolean");
+
     @NotNull
     public static final NamePredicate CHAR = new NamePredicate(PrimitiveType.CHAR.getTypeName());
 

js/js.translator/testData/rtti/cases/isJsPrimitiveType.kt

@@ -0,0 +1,32 @@
+package foo
+
+enum class Type {
+    NUMBER
+    STRING
+    BOOLEAN
+    OBJECT
+}
+
+fun test(a: Any, actualType: Type) {
+    assertEquals(actualType == Type.NUMBER, a is Int, "$a is Int")
+    assertEquals(actualType == Type.NUMBER, a is Number, "$a is Number")
+    assertEquals(actualType == Type.NUMBER, a is Double, "$a is Double")
+    assertEquals(actualType == Type.BOOLEAN, a is Boolean, "$a is Boolean")
+    assertEquals(actualType == Type.STRING, a is String, "$a is String")
+}
+
+fun box(): String {
+    test(1, Type.NUMBER)
+
+    test(12.3, Type.NUMBER)
+    test(12.3f, Type.NUMBER)
+
+    test("text", Type.STRING)
+
+    test(true, Type.BOOLEAN)
+    test(false, Type.BOOLEAN)
+
+    test(object {}, Type.OBJECT)
+
+    return "OK"
+}