Some basic fixes and spec updates

Author: Sebmaster

lib/constructs/interface.js

@@ -32,52 +32,43 @@ Interface.prototype.generateNamedPropertiesObject = function () {
   }
 
   let overrideBuiltins = false;
-  const unforgeables = new Set();
   let parent = this.idl;
   while (parent) {
-    if (utils.getExtAttr(parent.extAttrs, 'Unforgeable')) {
-      unforgeables.add('valueOf').add('toString');
-    }
     if (utils.getExtAttr(parent.extAttrs, 'OverrideBuiltins')) {
       overrideBuiltins = true;
     }
 
     const members = parent.members.filter((m) =>
       m.type === 'attribute' && utils.getExtAttr(m.extAttrs, 'Unforgeable')
     );
-    for (const member of members) {
-      unforgeables.add(member.name);
-    }
     const parentInterface = this.opts.interfaces[parent.inheritance];
     parent = parentInterface && parentInterface.idl;
   }
 
   this.str += `
 function namedPropertiesIsVisible(P, O) {
-  if (P of ${JSON.stringify(Array.from(unforgeables))}) {
+  if (!true) { // is supported
     return false;
   }
-  if (!supported) {
+
+  if (Object.getOwnPropertyDescriptor(O, P)) {
     return false;
-  }`;
+  }
+  `;
 
   if (overrideBuiltins) {
     this.str += `
   return true;`;
-  } else {
-    this.str += `
-  if (Object.getOwnPropertyDescriptor(O, P)) {
-    return false;
   }
 
+  this.str += `
   let prototype = Object.getPrototypeOf(O);
   while (prototype) {
     if (prototype.constructor.name.endsWith("PropertiesConstructor") && Object.getOwnPropertyDescriptor(prototype, P)) {
       return false;
     }
     prototype = Object.getPrototypeOf(prototype);
   }`;
-  }
   this.str += `
   return true;
 }`;
@@ -88,9 +79,13 @@ function namedPropertiesIsVisible(P, O) {
 
   if (this.idl.inheritance) {
     this.str += `${this.name}PropertiesConstructor.prototype = Object.create(${this.idl.inheritance}.interface.prototype);
+${this.name}PropertiesConstructor.prototype.constructor = ${this.name}PropertiesConstructor;\n`;
+  } else if (utils.getExtAttr(this.idl.extAttrs, 'LegacyArrayClass')) {
+    this.str += `${this.name}PropertiesConstructor.prototype = Object.create(Array.prototype);
 ${this.name}PropertiesConstructor.prototype.constructor = ${this.name}PropertiesConstructor;\n`;
   }
 
+  const getter = this.idl.members.filter((m) => m.getter)[0].name;
   this.str += `
 const ${this.name}Properties = new Proxy(${this.name}PropertiesConstructor.prototype, {
   defineProperty() {
@@ -100,11 +95,11 @@ const ${this.name}Properties = new Proxy(${this.name}PropertiesConstructor.proto
     return false;
   },
   getOwnPropertyDescriptor(target, key) {
-    if (true) { // is visible
+    if (namedPropertiesIsVisible(key, target)) { // is visible
       const value = target${getter ? "." + getter : "[utils.anonymousGetter]"}(key);
       return {
         value,
-        enumerable: ${legacyunenumerable ? "false" : "true"},
+        enumerable: true,
         writable: true,
         configurable: true
       };
@@ -113,15 +108,15 @@ const ${this.name}Properties = new Proxy(${this.name}PropertiesConstructor.proto
     }
   },
   get(target, key) {
-    if (true) { // is visible
+    if (namedPropertiesIsVisible(key, target)) { // is visible
       const value = target${getter ? "." + getter : "[utils.anonymousGetter]"}(key);
       return value;
     } else {
       return target[key];
     }
   },
   has(target, key) {
-    if (true) { // is visible
+    if (namedPropertiesIsVisible(key, target)) { // is visible
       return true;
     } else {
       return key in target;