Fix: Update pages workflow and fix async wasm binary.

Author: dylan-sutton-chavez

.github/workflows/pages.yml

@@ -3,8 +3,6 @@ name: pages
 on:
   push:
     branches: [main]
-  release:
-    types: [published]
   workflow_dispatch:
 
 permissions:
@@ -25,6 +23,36 @@ jobs:
     steps:
       - uses: actions/checkout@v5
 
+      - name: Cache Rust
+        uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: compiler
+
+      - uses: dtolnay/rust-toolchain@stable
+
+      - name: Install wasm target
+        run: rustup target add wasm32-unknown-unknown
+        working-directory: compiler
+
+      - name: Install wasm-opt
+        run: sudo apt-get update && sudo apt-get install -y binaryen
+
+      - name: Build wasm
+        run: cargo build --target wasm32-unknown-unknown --features wasm --lib --release
+        working-directory: compiler
+
+      - name: Optimize wasm
+        run: |
+          wasm-opt -Oz --converge --strip-debug \
+            --enable-bulk-memory \
+            --enable-nontrapping-float-to-int \
+            --enable-sign-ext \
+            -o compiler/target/wasm32-unknown-unknown/release/compiler_lib.wasm \
+            compiler/target/wasm32-unknown-unknown/release/compiler_lib.wasm
+
+      - name: Stage demo
+        run: cp compiler/target/wasm32-unknown-unknown/release/compiler_lib.wasm demo/
+
       - name: Setup Pages
         uses: actions/configure-pages@v5
         with:

demo/index.html

@@ -56,7 +56,6 @@
     </div>
 
     <script>
-        const WASM_URL = 'https://github.com/dylan-sutton-chavez/edge-python/releases/latest/download/compiler_lib.wasm';
         const SZ = 1 << 20;
 
         const ed = document.getElementById('ed');
@@ -69,11 +68,10 @@
 
         async function loadWasm() {
             try {
-                status.textContent = 'fetching latest wasm…';
-                const res = await fetch(WASM_URL, { cache: 'no-cache' });
+                status.textContent = 'loading wasm…';
+                const res = await fetch('./compiler_lib.wasm');
                 if (!res.ok) throw new Error(`HTTP ${res.status}`);
-                const bytes = await res.arrayBuffer();
-                const { instance } = await WebAssembly.instantiate(bytes, {});
+                const { instance } = await WebAssembly.instantiateStreaming(res, {});
                 wasm = instance.exports;
                 btn.disabled = false;
                 status.textContent = 'ready';