fix: statically import zstd glue so inline workers are self-contained

README.md

@@ -43,8 +43,11 @@ builds because Vite owns the `.wasm` asset URL.
 
 ## Usage in inline workers (`?worker&inline`)
 
-Vite inline workers are loaded from `blob:` URLs, so sibling `.wasm` files cannot be resolved
-from `import.meta.url`. Fetch the wasm bytes on the main thread and pass them into the worker:
+Vite inline workers are loaded from `blob:` URLs, so neither sibling `.wasm` files nor sibling
+JS chunks can be resolved relative to the worker. To keep inline workers self-contained, the
+Emscripten glue is imported **statically** (not via a runtime `import("./wasm-zstd.js")`), so
+bundlers inline it into the worker chunk. You only need to supply the wasm **bytes** — fetch
+them on the main thread and pass them into the worker:
 
 ```ts
 // main thread

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ioai/wasm-zstd",
-  "version": "1.1.1",
+  "version": "1.1.2",
   "description": "Vite-friendly WebAssembly bindings for facebook/zstd",
   "type": "module",
   "main": "dist/index.js",

src/index.js

@@ -1,4 +1,5 @@
-let createModulePromise;
+import createModule from "./wasm-zstd.js";
+
 let modulePromise;
 let moduleInstance;
 
@@ -49,18 +50,12 @@ function normalizeInitOptions(options = {}) {
   return moduleOptions;
 }
 
-async function loadCreateModule() {
-  createModulePromise ??= import("./wasm-zstd.js").then((mod) => mod.default);
-  return await createModulePromise;
-}
-
 export async function init(options = {}) {
   if (moduleInstance != undefined) {
     return;
   }
 
   const moduleOptions = normalizeInitOptions(options);
-  const createModule = await loadCreateModule();
 
   modulePromise ??= createModule(moduleOptions).then((mod) => {
     moduleInstance = mod;