ES2022 Output & whitespace-only minification (#201)

* Change vite output to ES2022

* Add whitespace-only minify using default esbuild

Does not work for .es.js output - limitation of vite.
Workaround for .es.js involves adding terser & a plugin.

* Remove @ts-expect-error from tests

* Update vite.config.mts

---------

Co-authored-by: Chenlei Hu <huchenlei@proton.me>

test/LGraph.test.ts

@@ -21,7 +21,6 @@ describe("LegacyLGraph Compatibility Layer", () => {
   });
 
   test("LegacyLGraph is correctly assigned to LiteGraph", () => {
-    // @ts-expect-error Fixed later in the TS conversion process.
     expect(LiteGraph.LGraph).toBe(LGraph);
   });
 });

test/LGraphNode.test.ts

@@ -5,9 +5,7 @@ import {
 describe("LGraphNode", () => {
   it("should serialize position correctly", () => {
     const node = new LGraphNode("TestNode");
-    // @ts-expect-error Expected - not a TS class yet.
     node.pos = [10, 10];
-    // @ts-expect-error JS tests in TS format
     expect(node.pos).toEqual(new Float32Array([10, 10]));
     expect(node.serialize().pos).toEqual(new Float32Array([10, 10]));
   });

vite.config.mts

@@ -10,8 +10,12 @@ export default defineConfig({
       fileName: (format) => `litegraph.${format}.js`,
       formats: ['es', 'umd']
     },
-    minify: false,
     sourcemap: true,
+    target: ['es2022'],
+  },
+  esbuild: {
+    minifyIdentifiers: false,
+    minifySyntax: false,
   },
   plugins: [
     dts({
@@ -26,4 +30,4 @@ export default defineConfig({
       '@': '/src'
     }
   }
-})
+})