Enable features in libwabt.js by default (#2109)

This applies the same defaults for features in the JavaScript-compiled
version as the native tools. Without this change, enabling only the
"reference_types" feature did not work, as it got turned off due to
the dependency on "bulk_memory", which is counter-intuitive (see
Features::UpdateDependencies()).

Additionally, exposes all the features and their default setting in
JavaScript.

2 files changed, 15 insertions, 20 deletions

diff --git a/docs/demo/wat2wasm/demo.js b/docs/demo/wat2wasm/demo.js
index 66f44736..a5b7eb09 100644
--- a/docs/demo/wat2wasm/demo.js
+++ b/docs/demo/wat2wasm/demo.js
@@ -24,19 +24,6 @@ var features = {};
 
 WabtModule().then(function(wabt) {
 
-var FEATURES = [
-  'exceptions',
-  'mutable_globals',
-  'sat_float_to_int',
-  'sign_extension',
-  'simd',
-  'threads',
-  'multi_value',
-  'tail_call',
-  'bulk_memory',
-  'reference_types',
-];
-
 var kCompileMinMS = 100;
 var outputShowBase64 = false;
 var outputLog;
@@ -52,9 +39,9 @@ var base64El = document.getElementById('base64');
 var binaryBuffer = null;
 var binaryBlobUrl = null;
 
-for (var feature of FEATURES) {
-  var featureEl = document.getElementById(feature);
-  features[feature] = featureEl.checked;
+for (const [f, v] of Object.entries(wabt.FEATURES)) {
+  var featureEl = document.getElementById(f);
+  featureEl.checked = v;
   featureEl.addEventListener('change', event => {
     var feature = event.target.id;
     features[feature] = event.target.checked;
diff --git a/docs/demo/wat2wasm/index.html b/docs/demo/wat2wasm/index.html
index f2e92561..14329c95 100644
--- a/docs/demo/wat2wasm/index.html
+++ b/docs/demo/wat2wasm/index.html
@@ -39,17 +39,25 @@
     <div>Enabled features:</div>
     <div>
       <input type="checkbox" id="exceptions"><label for="exceptions">exceptions</label>
-      <input type="checkbox" id="mutable_globals" checked><label for="mutable_globals">mutable globals</label>
+      <input type="checkbox" id="mutable_globals"><label for="mutable_globals">mutable globals</label>
       <input type="checkbox" id="sat_float_to_int"><label for="sat_float_to_int">saturating float to int</label>
       <input type="checkbox" id="sign_extension"><label for="sign_extension">sign extension</label>
-    </div>
-    <div>
       <input type="checkbox" id="simd"><label for="simd">simd</label>
       <input type="checkbox" id="threads"><label for="threads">threads</label>
-      <input type="checkbox" id="multi_value" checked><label for="multi_value">multi value</label>
+      <input type="checkbox" id="function_references"><label for="function_references">function references</label>
+      <input type="checkbox" id="multi_value"><label for="multi_value">multi value</label>
       <input type="checkbox" id="tail_call"><label for="tail_call">tail call</label>
+    </div>
+    <div>
       <input type="checkbox" id="bulk_memory"><label for="bulk_memory">bulk memory</label>
       <input type="checkbox" id="reference_types"><label for="reference_types">reference types</label>
+      <input type="checkbox" id="annotations"><label for="annotations">annotations</label>
+      <input type="checkbox" id="code_metadata"><label for="code_metadata">code metadata</label>
+      <input type="checkbox" id="gc"><label for="gc">gc</label>
+      <input type="checkbox" id="memory64"><label for="memory64">memory64</label>
+      <input type="checkbox" id="multi_memory"><label for="gc">multi memory</label>
+      <input type="checkbox" id="extended_const"><label for="extended_const">extended const</label>
+      <input type="checkbox" id="relaxed_simd"><label for="relaxed_simd">relaxed simd</label>
     </div>
   </header>
   <main>