apply plugin to exported constants

Author: Basile-Paoli

src/index.ts

@@ -78,7 +78,10 @@ function stylexKeySort(
     return;
   }
 
-  for (const node of program.body) {
+  for (let node of program.body) {
+    if (node.type === 'ExportNamedDeclaration' && node.declaration) {
+      node = node.declaration;
+    }
     if (node.type !== 'VariableDeclaration') {
       continue;
     }

test/fixtures/sort-named-export/input.ts

@@ -0,0 +1,8 @@
+import * as stylex from '@stylexjs/stylex';
+export const styles = stylex.create({
+  foo: {
+    display: 'flex',
+    borderColor: 'red',
+    alignItems: 'center',
+  },
+});

test/fixtures/sort-named-export/output.ts

@@ -0,0 +1,8 @@
+import * as stylex from '@stylexjs/stylex';
+export const styles = stylex.create({
+  foo: {
+    alignItems: 'center',
+    borderColor: 'red',
+    display: 'flex',
+  },
+});