fix wrong size

src/main.worker.ts

@@ -15,7 +15,7 @@ const jsModule = import(  /* @vite-ignore */ `${wasmBase}clangd.js`);
 
 // Pre-fetch wasm, and report progress to main
 const wasmResponse = await fetch(wasmUrl);
-const wasmSize = wasmResponse.headers.get("Content-Length");
+const wasmSize = wasmResponse.headers.get("Content-Length") ?? __WASM_SIZE__;
 const wasmReader = wasmResponse.body!.getReader();
 let receivedLength = 0;
 let chunks: Uint8Array[] = [];

src/vite-env.d.ts

@@ -1 +1,3 @@
 /// <reference types="vite/client" />
+
+declare const __WASM_SIZE__: number;

vite.config.ts

@@ -45,5 +45,9 @@ export default defineConfig({
   },
   resolve: {
     dedupe: ['monaco-editor', 'vscode'],
+  },
+  define: {
+    // Server may not provide Content-Length header, get it in build time
+    __WASM_SIZE__: fs.statSync("public/wasm/clangd.wasm").size,
   }
 });