Under J2CL, expose {ImmutableList,ImmutableSet}.{of,copyOf} for JavaScript usage.

gkdn · Google Java Core Libraries · commit b41968f5f234 · 2023-07-05T13:39:37.000-07:00
RELNOTES=`collect`: Under J2CL, exposed `ImmutableList` and `ImmutableSet` methods `copyOf` and `of` for JavaScript usage.
PiperOrigin-RevId: 545771930
diff --git a/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/ImmutableList.java b/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/ImmutableList.java
@@ -29,6 +29,7 @@
 import java.util.List;
 import java.util.RandomAccess;
 import java.util.stream.Collector;
+import jsinterop.annotations.JsMethod;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
@@ -118,6 +119,12 @@ private static void arrayCopy(Object[] dest, int pos, Object... source) {
     System.arraycopy(source, 0, dest, pos, source.length);
   }
 
+  /** ImmutableList.of API that is friendly to use from JavaScript. */
+  @JsMethod(name = "of")
+  static <E> ImmutableList<E> jsOf(E... elements) {
+    return copyOf(elements);
+  }
+
   public static <E> ImmutableList<E> copyOf(Iterable<? extends E> elements) {
     checkNotNull(elements); // for GWT
     return (elements instanceof Collection)
@@ -142,6 +149,7 @@ public static <E> ImmutableList<E> copyOf(Collection<? extends E> elements) {
     return copyFromCollection(elements);
   }
 
+  @JsMethod
   public static <E> ImmutableList<E> copyOf(E[] elements) {
     checkNotNull(elements); // eager for GWT
     return copyOf(Arrays.asList(elements));
diff --git a/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/ImmutableSet.java b/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/ImmutableSet.java
@@ -27,6 +27,7 @@
 import java.util.List;
 import java.util.Set;
 import java.util.stream.Collector;
+import jsinterop.annotations.JsMethod;
 
 /**
  * GWT emulated version of {@link com.google.common.collect.ImmutableSet}. For the unsorted sets,
@@ -85,6 +86,13 @@ public static <E> ImmutableSet<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E... ot
     return copyOf(all.iterator());
   }
 
+  /** ImmutableSet.of API that is friendly to use from JavaScript. */
+  @JsMethod(name = "of")
+  static <E> ImmutableSet<E> jsOf(E... elements) {
+    return copyOf(elements);
+  }
+
+  @JsMethod
   public static <E> ImmutableSet<E> copyOf(E[] elements) {
     checkNotNull(elements);
     switch (elements.length) {
