upgraded to Object.fromEntries

.github/workflows/gh-pages.yml

@@ -1,4 +1,4 @@
-name: Generate GitHub Pages Example
+name: Generate GitHub Pages
 
 on:
   push:

index.js

@@ -355,16 +355,18 @@ class LightMap extends Map
     // TODO: check for circular references
     toObject()
     {
-        return this.reduce(
-            ( r, [ k, v ] ) => {
-                if ( v instanceof LightMap ) {
-                    v = v.toObject();
-                }
+        const
+            obj = Object.fromEntries( this ),
+            keys = Object.keys( obj );
+
+        for ( let i = 0; i < keys.length; i++ ) {
+            const key = keys[ i ];
+            if ( obj[ key ] instanceof Map ) {
+                obj[ key ] = obj[ key ].toObject();
+            }
+        }
 
-                r[ k ] = v;
-                return r;
-            }, {}
-        );
+        return obj;
     }
 
     toJSON()

test/index.test.js

@@ -451,6 +451,18 @@ describe( 'LightMap', () => {
         () => expect( Object.prototype.toString.call( new LightMap() ) ).to.eq( '[object LightMap]' )
     );
 
+    it( 'Symbol.species should equal Map',
+        () => {
+            const
+                a = new LightMap( [ [ 'a', 1 ], [ 'a', 2 ] ] ),
+                b = new Map( [ [ 'a', 1 ], [ 'a', 2 ] ] );
+
+            expect( LightMap[ Symbol.species ] ).to.eq( Map );
+            expect( a instanceof LightMap[ Symbol.species ] ).to.eq( true );
+            expect( b instanceof LightMap[ Symbol.species ] ).to.eq( true );
+        }
+    );
+
     describe( 'Symbol.hasInstance', () => {
         it( 'should be false if instance of Map', () => {
             expect( new Map() instanceof LightMap ).to.eq( false );