feat: Add Zstandard wasm

Relocate test bundle location.
Experiment with @rollup/plugin-wasm (it has an issue with esm NodeJS).
Switch to "webview" target for emscripten (less JS loading logic).

Signed-off-by: Gordon Smith <GordonJSmith@gmail.com>

.vscode/launch.json

@@ -13,10 +13,17 @@
             "webRoot": "${workspaceRoot}"
         },
         {
-            "name": "helloworld.html",
+            "name": "hw-graphviz.html",
             "type": "msedge",
             "request": "launch",
-            "url": "http://localhost:8000/helloworld.html",
+            "url": "http://localhost:8000/hw-graphviz.html",
+            "webRoot": "${workspaceRoot}"
+        },
+        {
+            "name": "hw-zstd.html",
+            "type": "msedge",
+            "request": "launch",
+            "url": "http://localhost:8000/hw-zstd.html",
             "webRoot": "${workspaceRoot}"
         },
         {

.vscode/tasks.json

@@ -6,7 +6,7 @@
         {
             "type": "npm",
             "label": "Compile Watch",
-            "script": "compile-es6-watch",
+            "script": "compile-watch",
             "problemMatcher": [
                 "$tsc-watch"
             ],

CMakeLists.txt

@@ -19,6 +19,7 @@ SET(EM_FLAGS
     "-s EXPORT_ES6=1"
     "-s IGNORE_CLOSURE_COMPILER_ERRORS=0"
     "-s USE_ES6_IMPORT_META=0"
+    # "-s WASM_BIGINT=1"
     "--pre-js ${CMAKE_CURRENT_SOURCE_DIR}/cpp/src/pre.js"
     # "--post-js ${CMAKE_CURRENT_SOURCE_DIR}/cpp/src/post.js"
 )