[code_builder] Set external and static in correct order

pkgs/code_builder/lib/src/emitter.dart

@@ -437,15 +437,15 @@ class DartEmitter extends Object
     for (var a in spec.annotations) {
       visitAnnotation(a, output);
     }
+    if (spec.external) {
+      output.write('external ');
+    }
     if (spec.static) {
       output.write('static ');
     }
     if (spec.late && _useNullSafetySyntax) {
       output.write('late ');
     }
-    if (spec.external) {
-      output.write('external ');
-    }
     switch (spec.modifier) {
       case FieldModifier.var$:
         if (spec.type == null) {

pkgs/code_builder/test/specs/field_test.dart

@@ -110,4 +110,34 @@ void main() {
       '''),
     );
   });
+
+  test('should create a late static field', () {
+    expect(
+      Field((b) => b
+        ..name = 'value'
+        ..static = true
+        ..late = true
+        ..type = refer('String')
+        ..annotations.addAll([refer('JS').call([])])),
+      equalsDart(r'''
+        @JS()
+        static late String value;
+      ''', DartEmitter(useNullSafetySyntax: true)),
+    );
+  });
+
+  test('should create an external static field', () {
+    expect(
+      Field((b) => b
+        ..name = 'value'
+        ..external = true
+        ..static = true
+        ..type = refer('double')
+        ..annotations.addAll([refer('JS').call([])])),
+      equalsDart(r'''
+        @JS()
+        external static double value;
+      '''),
+    );
+  });
 }