JS: fix translation of float constants. See KT-8413

compiler/testData/codegen/box/constants/float.kt

@@ -1,6 +1,3 @@
-// TODO: muted automatically, investigate should it be ran for JS or not
-// IGNORE_BACKEND: JS
-
 fun box(): String {
     if (1F != 1.toFloat()) return "fail 1"
     if (1.0F != 1.0.toFloat()) return "fail 2"

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java

@@ -4542,13 +4542,7 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
         @TestMetadata("float.kt")
         public void testFloat() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/constants/float.kt");
-            try {
-                doTest(fileName);
-            }
-            catch (Throwable ignore) {
-                return;
-            }
-            throw new AssertionError("Looks like this test can be unmuted. Remove IGNORE_BACKEND directive for that.");
+            doTest(fileName);
         }
 
         @TestMetadata("kt9532.kt")

js/js.translator/src/org/jetbrains/kotlin/js/translate/general/Translation.java

@@ -138,6 +138,17 @@ public final class Translation {
         else if (value instanceof Long) {
             return JsAstUtils.newLong((Long) value, context);
         }
+        else if (value instanceof Float) {
+            float floatValue = (Float) value;
+            double doubleValue;
+            if (Float.isInfinite(floatValue) || Float.isNaN(floatValue)) {
+                doubleValue = floatValue;
+            }
+            else {
+                doubleValue = Double.parseDouble(Float.toString(floatValue));
+            }
+            return context.program().getNumberLiteral(doubleValue);
+        }
         else if (value instanceof Number) {
             return context.program().getNumberLiteral(((Number) value).doubleValue());
         }