diff --git a/lib/constructs/attribute.js b/lib/constructs/attribute.js
index 174df9a1..5f1f8e67 100644
--- a/lib/constructs/attribute.js
+++ b/lib/constructs/attribute.js
@@ -29,7 +29,7 @@ class Attribute {
 
     let brandCheck = `
       if (!exports.is(esValue)) {
-        throw new TypeError("Illegal invocation");
+        throw new TypeError("'$KEYWORD$ ${this.idl.name}' called on an object that is not a valid instance of ${this.interface.name}.");
       }
     `;
     let getterBody = `return utils.tryWrapperForImpl(esValue[implSymbol]["${this.idl.name}"]);`;
@@ -78,11 +78,13 @@ class Attribute {
     addMethod(this.idl.name, [], `
       ${promiseHandlingBefore}
       const esValue = this !== null && this !== undefined ? this : globalObject;
-      ${brandCheck}
+      ${brandCheck.replace("$KEYWORD$", "get")}
       ${getterBody}
       ${promiseHandlingAfter}
     `, "get", { configurable });
 
+    brandCheck = brandCheck.replace("$KEYWORD$", "set");
+
     if (!this.idl.readonly) {
       if (async) {
         throw new Error(`Illegal promise-typed attribute "${this.idl.name}" in interface "${this.interface.idl.name}"`);
@@ -159,7 +161,7 @@ class Attribute {
       addMethod("toString", [], `
         const esValue = this;
         if (!exports.is(esValue)) {
-          throw new TypeError("Illegal invocation");
+          throw new TypeError("'toString' called on an object that is not a valid instance of ${this.interface.name}.");
         }
 
         ${getterBody}
diff --git a/lib/constructs/iterable.js b/lib/constructs/iterable.js
index 049bba8c..eaac7308 100644
--- a/lib/constructs/iterable.js
+++ b/lib/constructs/iterable.js
@@ -20,8 +20,8 @@ class Iterable {
 
   generateFunction(key, kind) {
     this.interface.addMethod(this.interface.defaultWhence, key, [], `
-      if (!this || !exports.is(this)) {
-        throw new TypeError("Illegal invocation");
+      if (!exports.is(this)) {
+        throw new TypeError("'${key}' called on an object that is not a valid instance of ${this.interface.name}.");
       }
       return exports.createDefaultIterator(this, "${kind}");
     `);
@@ -37,8 +37,8 @@ class Iterable {
       this.generateFunction("entries", "key+value");
       this.interface.addProperty(whence, Symbol.iterator, `${this.interface.name}.prototype.entries`);
       this.interface.addMethod(whence, "forEach", ["callback"], `
-        if (!this || !exports.is(this)) {
-          throw new TypeError("Illegal invocation");
+        if (!exports.is(this)) {
+          throw new TypeError("'forEach' called on an object that is not a valid instance of ${this.interface.name}.");
         }
         if (arguments.length < 1) {
           throw new TypeError("Failed to execute 'forEach' on '${this.name}': 1 argument required, " +
diff --git a/lib/constructs/operation.js b/lib/constructs/operation.js
index f0b0956d..4e5c7e18 100644
--- a/lib/constructs/operation.js
+++ b/lib/constructs/operation.js
@@ -107,7 +107,7 @@ class Operation {
       str += `
         const esValue = this !== null && this !== undefined ? this : globalObject;
         if (!exports.is(esValue)) {
-          throw new TypeError("Illegal invocation");
+          throw new TypeError("'${this.name}' called on an object that is not a valid instance of ${this.interface.name}.");
         }
       `;
     }
diff --git a/test/__snapshots__/test.js.snap b/test/__snapshots__/test.js.snap
index 8e007d4c..6e468a63 100644
--- a/test/__snapshots__/test.js.snap
+++ b/test/__snapshots__/test.js.snap
@@ -267,7 +267,7 @@ exports.install = (globalObject, globalNames) => {
     bs(source) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'bs' called on an object that is not a valid instance of BufferSourceTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -295,7 +295,7 @@ exports.install = (globalObject, globalNames) => {
     ab(ab) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'ab' called on an object that is not a valid instance of BufferSourceTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -319,7 +319,7 @@ exports.install = (globalObject, globalNames) => {
     abv(abv) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'abv' called on an object that is not a valid instance of BufferSourceTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -346,7 +346,7 @@ exports.install = (globalObject, globalNames) => {
     u8a(u8) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'u8a' called on an object that is not a valid instance of BufferSourceTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -370,7 +370,7 @@ exports.install = (globalObject, globalNames) => {
     abUnion(ab) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'abUnion' called on an object that is not a valid instance of BufferSourceTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -397,7 +397,7 @@ exports.install = (globalObject, globalNames) => {
     u8aUnion(ab) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'u8aUnion' called on an object that is not a valid instance of BufferSourceTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -555,7 +555,7 @@ exports.install = (globalObject, globalNames) => {
     method() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'method' called on an object that is not a valid instance of CEReactions.\\");
       }
 
       CEReactions.preSteps(globalObject);
@@ -570,7 +570,7 @@ exports.install = (globalObject, globalNames) => {
       try {
         const esValue = this !== null && this !== undefined ? this : globalObject;
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'promiseOperation' called on an object that is not a valid instance of CEReactions.\\");
         }
 
         CEReactions.preSteps(globalObject);
@@ -588,7 +588,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get attr' called on an object that is not a valid instance of CEReactions.\\");
       }
 
       CEReactions.preSteps(globalObject);
@@ -603,7 +603,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set attr' called on an object that is not a valid instance of CEReactions.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, {
@@ -623,7 +623,9 @@ exports.install = (globalObject, globalNames) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(
+            \\"'get promiseAttribute' called on an object that is not a valid instance of CEReactions.\\"
+          );
         }
 
         CEReactions.preSteps(globalObject);
@@ -1033,7 +1035,9 @@ exports.install = (globalObject, globalNames) => {
     createDocumentType(qualifiedName, publicId, systemId) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'createDocumentType' called on an object that is not a valid instance of DOMImplementation.\\"
+        );
       }
 
       if (arguments.length < 3) {
@@ -1071,7 +1075,7 @@ exports.install = (globalObject, globalNames) => {
     createDocument(namespace, qualifiedName) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'createDocument' called on an object that is not a valid instance of DOMImplementation.\\");
       }
 
       if (arguments.length < 2) {
@@ -1120,7 +1124,9 @@ exports.install = (globalObject, globalNames) => {
     createHTMLDocument() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'createHTMLDocument' called on an object that is not a valid instance of DOMImplementation.\\"
+        );
       }
       const args = [];
       {
@@ -1138,7 +1144,7 @@ exports.install = (globalObject, globalNames) => {
     hasFeature() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'hasFeature' called on an object that is not a valid instance of DOMImplementation.\\");
       }
 
       return esValue[implSymbol].hasFeature();
@@ -1308,7 +1314,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get x' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       return esValue[implSymbol][\\"x\\"];
@@ -1318,7 +1324,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set x' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       V = conversions[\\"unrestricted double\\"](V, {
@@ -1332,7 +1338,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get y' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       return esValue[implSymbol][\\"y\\"];
@@ -1342,7 +1348,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set y' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       V = conversions[\\"unrestricted double\\"](V, {
@@ -1356,7 +1362,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get width' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       return esValue[implSymbol][\\"width\\"];
@@ -1366,7 +1372,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set width' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       V = conversions[\\"unrestricted double\\"](V, {
@@ -1380,7 +1386,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get height' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       return esValue[implSymbol][\\"height\\"];
@@ -1390,7 +1396,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set height' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       V = conversions[\\"unrestricted double\\"](V, {
@@ -1618,7 +1624,7 @@ exports.install = (globalObject, globalNames) => {
     op() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'op' called on an object that is not a valid instance of DictionaryConvert.\\");
       }
       const args = [];
       {
@@ -1754,7 +1760,7 @@ exports.install = (globalObject, globalNames) => {
     op(destination) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'op' called on an object that is not a valid instance of Enum.\\");
       }
 
       if (arguments.length < 1) {
@@ -1775,7 +1781,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get attr' called on an object that is not a valid instance of Enum.\\");
       }
 
       return utils.tryWrapperForImpl(esValue[implSymbol][\\"attr\\"]);
@@ -1785,7 +1791,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set attr' called on an object that is not a valid instance of Enum.\\");
       }
 
       V = \`\${V}\`;
@@ -1952,7 +1958,7 @@ exports.install = (globalObject, globalNames) => {
     addEventListener(type, callback) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'addEventListener' called on an object that is not a valid instance of EventTarget.\\");
       }
 
       if (arguments.length < 2) {
@@ -2058,7 +2064,7 @@ exports._internalSetup = (wrapper, globalObject) => {
       op() {
         const esValue = this !== null && this !== undefined ? this : globalObject;
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'op' called on an object that is not a valid instance of Global.\\");
         }
 
         return esValue[implSymbol].op();
@@ -2066,7 +2072,7 @@ exports._internalSetup = (wrapper, globalObject) => {
       unforgeableOp() {
         const esValue = this !== null && this !== undefined ? this : globalObject;
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'unforgeableOp' called on an object that is not a valid instance of Global.\\");
         }
 
         return esValue[implSymbol].unforgeableOp();
@@ -2075,7 +2081,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get attr' called on an object that is not a valid instance of Global.\\");
         }
 
         return esValue[implSymbol][\\"attr\\"];
@@ -2084,7 +2090,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'set attr' called on an object that is not a valid instance of Global.\\");
         }
 
         V = conversions[\\"DOMString\\"](V, {
@@ -2097,7 +2103,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get unforgeableAttr' called on an object that is not a valid instance of Global.\\");
         }
 
         return esValue[implSymbol][\\"unforgeableAttr\\"];
@@ -2106,7 +2112,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'set unforgeableAttr' called on an object that is not a valid instance of Global.\\");
         }
 
         V = conversions[\\"DOMString\\"](V, {
@@ -2119,7 +2125,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get length' called on an object that is not a valid instance of Global.\\");
         }
 
         return esValue[implSymbol][\\"length\\"];
@@ -2128,7 +2134,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'set length' called on an object that is not a valid instance of Global.\\");
         }
 
         V = conversions[\\"unsigned long\\"](V, {
@@ -2441,7 +2447,9 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'get lenientSetter' called on an object that is not a valid instance of LegacyLenientAttributes.\\"
+        );
       }
 
       return esValue[implSymbol][\\"lenientSetter\\"];
@@ -2451,7 +2459,9 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'set lenientSetter' called on an object that is not a valid instance of LegacyLenientAttributes.\\"
+        );
       }
     }
 
@@ -2600,7 +2610,7 @@ exports._internalSetup = (wrapper, globalObject) => {
       assign(url) {
         const esValue = this !== null && this !== undefined ? this : globalObject;
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'assign' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         if (arguments.length < 1) {
@@ -2624,7 +2634,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get href' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         return esValue[implSymbol][\\"href\\"];
@@ -2633,7 +2643,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'set href' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         V = conversions[\\"USVString\\"](V, {
@@ -2645,7 +2655,7 @@ exports._internalSetup = (wrapper, globalObject) => {
       toString() {
         const esValue = this;
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'toString' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         return esValue[implSymbol][\\"href\\"];
@@ -2654,7 +2664,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get origin' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         return esValue[implSymbol][\\"origin\\"];
@@ -2663,7 +2673,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get protocol' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         return esValue[implSymbol][\\"protocol\\"];
@@ -2672,7 +2682,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'set protocol' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         V = conversions[\\"USVString\\"](V, {
@@ -2810,7 +2820,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get a' called on an object that is not a valid instance of LegacyUnforgeableMap.\\");
         }
 
         return esValue[implSymbol][\\"a\\"];
@@ -3157,7 +3167,7 @@ exports.install = (globalObject, globalNames) => {
     mixedInOp() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'mixedInOp' called on an object that is not a valid instance of MixedIn.\\");
       }
 
       return esValue[implSymbol].mixedInOp();
@@ -3166,7 +3176,7 @@ exports.install = (globalObject, globalNames) => {
     ifaceMixinOp() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'ifaceMixinOp' called on an object that is not a valid instance of MixedIn.\\");
       }
 
       return esValue[implSymbol].ifaceMixinOp();
@@ -3176,7 +3186,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get mixedInAttr' called on an object that is not a valid instance of MixedIn.\\");
       }
 
       return esValue[implSymbol][\\"mixedInAttr\\"];
@@ -3186,7 +3196,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set mixedInAttr' called on an object that is not a valid instance of MixedIn.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, {
@@ -3200,7 +3210,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get ifaceMixinAttr' called on an object that is not a valid instance of MixedIn.\\");
       }
 
       return esValue[implSymbol][\\"ifaceMixinAttr\\"];
@@ -3210,7 +3220,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set ifaceMixinAttr' called on an object that is not a valid instance of MixedIn.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, {
@@ -3444,7 +3454,7 @@ exports.install = (globalObject, globalNames) => {
     compatible(arg1) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'compatible' called on an object that is not a valid instance of Overloads.\\");
       }
 
       if (arguments.length < 1) {
@@ -3514,7 +3524,7 @@ exports.install = (globalObject, globalNames) => {
     incompatible1(arg1) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'incompatible1' called on an object that is not a valid instance of Overloads.\\");
       }
 
       if (arguments.length < 1) {
@@ -3551,7 +3561,7 @@ exports.install = (globalObject, globalNames) => {
     incompatible2(arg1) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'incompatible2' called on an object that is not a valid instance of Overloads.\\");
       }
 
       if (arguments.length < 1) {
@@ -3594,7 +3604,7 @@ exports.install = (globalObject, globalNames) => {
     incompatible3(arg1) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'incompatible3' called on an object that is not a valid instance of Overloads.\\");
       }
 
       if (arguments.length < 1) {
@@ -3804,7 +3814,9 @@ exports._internalSetup = (wrapper, globalObject) => {
         try {
           const esValue = this !== null && this !== undefined ? this : globalObject;
           if (!exports.is(esValue)) {
-            throw new TypeError(\\"Illegal invocation\\");
+            throw new TypeError(
+              \\"'unforgeablePromiseOperation' called on an object that is not a valid instance of PromiseTypes.\\"
+            );
           }
 
           return utils.tryWrapperForImpl(esValue[implSymbol].unforgeablePromiseOperation());
@@ -3817,7 +3829,9 @@ exports._internalSetup = (wrapper, globalObject) => {
           const esValue = this !== null && this !== undefined ? this : globalObject;
 
           if (!exports.is(esValue)) {
-            throw new TypeError(\\"Illegal invocation\\");
+            throw new TypeError(
+              \\"'get unforgeablePromiseAttribute' called on an object that is not a valid instance of PromiseTypes.\\"
+            );
           }
 
           return utils.tryWrapperForImpl(esValue[implSymbol][\\"unforgeablePromiseAttribute\\"]);
@@ -3880,7 +3894,7 @@ exports.install = (globalObject, globalNames) => {
     voidPromiseConsumer(p) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'voidPromiseConsumer' called on an object that is not a valid instance of PromiseTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -3902,7 +3916,7 @@ exports.install = (globalObject, globalNames) => {
     promiseConsumer(p) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'promiseConsumer' called on an object that is not a valid instance of PromiseTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -3925,7 +3939,7 @@ exports.install = (globalObject, globalNames) => {
       try {
         const esValue = this !== null && this !== undefined ? this : globalObject;
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'promiseOperation' called on an object that is not a valid instance of PromiseTypes.\\");
         }
 
         return utils.tryWrapperForImpl(esValue[implSymbol].promiseOperation());
@@ -3939,7 +3953,9 @@ exports.install = (globalObject, globalNames) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(
+            \\"'get promiseAttribute' called on an object that is not a valid instance of PromiseTypes.\\"
+          );
         }
 
         return utils.tryWrapperForImpl(esValue[implSymbol][\\"promiseAttribute\\"]);
@@ -4090,7 +4106,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get reflectedBoolean' called on an object that is not a valid instance of Reflect.\\");
       }
 
       return esValue[implSymbol].hasAttributeNS(null, \\"reflectedboolean\\");
@@ -4100,7 +4116,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set reflectedBoolean' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"boolean\\"](V, {
@@ -4118,7 +4134,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get reflectedDOMString' called on an object that is not a valid instance of Reflect.\\");
       }
 
       const value = esValue[implSymbol].getAttributeNS(null, \\"reflecteddomstring\\");
@@ -4129,7 +4145,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set reflectedDOMString' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, {
@@ -4143,7 +4159,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get reflectedLong' called on an object that is not a valid instance of Reflect.\\");
       }
 
       const value = parseInt(esValue[implSymbol].getAttributeNS(null, \\"reflectedlong\\"));
@@ -4154,7 +4170,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set reflectedLong' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"long\\"](V, {
@@ -4168,7 +4184,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get reflectedUnsignedLong' called on an object that is not a valid instance of Reflect.\\");
       }
 
       const value = parseInt(esValue[implSymbol].getAttributeNS(null, \\"reflectedunsignedlong\\"));
@@ -4179,7 +4195,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set reflectedUnsignedLong' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"unsigned long\\"](V, {
@@ -4193,7 +4209,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get reflectedUSVStringURL' called on an object that is not a valid instance of Reflect.\\");
       }
 
       const value = esValue[implSymbol].getAttributeNS(null, \\"reflectedusvstringurl\\");
@@ -4208,7 +4224,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set reflectedUSVStringURL' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"USVString\\"](V, {
@@ -4222,7 +4238,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get reflectionTest' called on an object that is not a valid instance of Reflect.\\");
       }
 
       const value = esValue[implSymbol].getAttributeNS(null, \\"reflection\\");
@@ -4233,7 +4249,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set reflectionTest' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, {
@@ -4247,7 +4263,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get withUnderscore' called on an object that is not a valid instance of Reflect.\\");
       }
 
       const value = esValue[implSymbol].getAttributeNS(null, \\"with-underscore\\");
@@ -4258,7 +4274,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set withUnderscore' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, {
@@ -4390,7 +4406,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get replaceable' called on an object that is not a valid instance of Replaceable.\\");
       }
 
       return esValue[implSymbol][\\"replaceable\\"];
@@ -4400,7 +4416,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set replaceable' called on an object that is not a valid instance of Replaceable.\\");
       }
 
       Object.defineProperty(esValue, \\"replaceable\\", {
@@ -4560,7 +4576,7 @@ exports.install = (globalObject, globalNames) => {
     recordConsumer(rec) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'recordConsumer' called on an object that is not a valid instance of SeqAndRec.\\");
       }
 
       if (arguments.length < 1) {
@@ -4605,7 +4621,7 @@ exports.install = (globalObject, globalNames) => {
     recordConsumer2(rec) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'recordConsumer2' called on an object that is not a valid instance of SeqAndRec.\\");
       }
 
       if (arguments.length < 1) {
@@ -4650,7 +4666,7 @@ exports.install = (globalObject, globalNames) => {
     sequenceConsumer(seq) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'sequenceConsumer' called on an object that is not a valid instance of SeqAndRec.\\");
       }
 
       if (arguments.length < 1) {
@@ -4687,7 +4703,7 @@ exports.install = (globalObject, globalNames) => {
     sequenceConsumer2(seq) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'sequenceConsumer2' called on an object that is not a valid instance of SeqAndRec.\\");
       }
 
       if (arguments.length < 1) {
@@ -4722,7 +4738,7 @@ exports.install = (globalObject, globalNames) => {
     frozenArrayConsumer(arr) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'frozenArrayConsumer' called on an object that is not a valid instance of SeqAndRec.\\");
       }
 
       if (arguments.length < 1) {
@@ -4876,7 +4892,7 @@ exports.install = (globalObject, globalNames) => {
     def() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'def' called on an object that is not a valid instance of Static.\\");
       }
 
       return esValue[implSymbol].def();
@@ -4886,7 +4902,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get abc' called on an object that is not a valid instance of Static.\\");
       }
 
       return esValue[implSymbol][\\"abc\\"];
@@ -4896,7 +4912,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set abc' called on an object that is not a valid instance of Static.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, { context: \\"Failed to set the 'abc' property on 'Static': The provided value\\" });
@@ -5043,7 +5059,7 @@ exports.install = (globalObject, globalNames) => {
     key(index) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'key' called on an object that is not a valid instance of Storage.\\");
       }
 
       if (arguments.length < 1) {
@@ -5063,7 +5079,7 @@ exports.install = (globalObject, globalNames) => {
     getItem(key) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'getItem' called on an object that is not a valid instance of Storage.\\");
       }
 
       if (arguments.length < 1) {
@@ -5083,7 +5099,7 @@ exports.install = (globalObject, globalNames) => {
     setItem(key, value) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'setItem' called on an object that is not a valid instance of Storage.\\");
       }
 
       if (arguments.length < 2) {
@@ -5108,7 +5124,7 @@ exports.install = (globalObject, globalNames) => {
     removeItem(key) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'removeItem' called on an object that is not a valid instance of Storage.\\");
       }
 
       if (arguments.length < 1) {
@@ -5130,7 +5146,7 @@ exports.install = (globalObject, globalNames) => {
     clear() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'clear' called on an object that is not a valid instance of Storage.\\");
       }
 
       return esValue[implSymbol].clear();
@@ -5140,7 +5156,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get length' called on an object that is not a valid instance of Storage.\\");
       }
 
       return esValue[implSymbol][\\"length\\"];
@@ -5431,7 +5447,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get attr' called on an object that is not a valid instance of StringifierAttribute.\\");
       }
 
       return esValue[implSymbol][\\"attr\\"];
@@ -5440,7 +5456,7 @@ exports.install = (globalObject, globalNames) => {
     toString() {
       const esValue = this;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'toString' called on an object that is not a valid instance of StringifierAttribute.\\");
       }
 
       return esValue[implSymbol][\\"attr\\"];
@@ -5564,7 +5580,9 @@ exports.install = (globalObject, globalNames) => {
     toString() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'toString' called on an object that is not a valid instance of StringifierDefaultOperation.\\"
+        );
       }
 
       return esValue[implSymbol].toString();
@@ -5687,7 +5705,9 @@ exports.install = (globalObject, globalNames) => {
     operation() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'operation' called on an object that is not a valid instance of StringifierNamedOperation.\\"
+        );
       }
 
       return esValue[implSymbol].operation();
@@ -5696,7 +5716,9 @@ exports.install = (globalObject, globalNames) => {
     toString() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'toString' called on an object that is not a valid instance of StringifierNamedOperation.\\"
+        );
       }
 
       return esValue[implSymbol].operation();
@@ -5818,7 +5840,7 @@ exports.install = (globalObject, globalNames) => {
     toString() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'toString' called on an object that is not a valid instance of StringifierOperation.\\");
       }
 
       return esValue[implSymbol].toString();
@@ -5941,7 +5963,9 @@ exports.install = (globalObject, globalNames) => {
     numOrStrConsumer(a) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'numOrStrConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -5972,7 +5996,9 @@ exports.install = (globalObject, globalNames) => {
     numOrEnumConsumer(a) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'numOrEnumConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -6006,7 +6032,9 @@ exports.install = (globalObject, globalNames) => {
     numOrStrOrNullConsumer(a) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'numOrStrOrNullConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -6043,7 +6071,9 @@ exports.install = (globalObject, globalNames) => {
     numOrStrOrURLOrNullConsumer(a) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'numOrStrOrURLOrNullConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -6082,7 +6112,9 @@ exports.install = (globalObject, globalNames) => {
     urlMapInnerConsumer(a) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'urlMapInnerConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -6129,7 +6161,7 @@ exports.install = (globalObject, globalNames) => {
     urlMapConsumer(a) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'urlMapConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\");
       }
 
       if (arguments.length < 1) {
@@ -6180,7 +6212,9 @@ exports.install = (globalObject, globalNames) => {
     bufferSourceOrURLConsumer(b) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'bufferSourceOrURLConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -6211,7 +6245,9 @@ exports.install = (globalObject, globalNames) => {
     arrayBufferViewOrURLMapConsumer(b) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'arrayBufferViewOrURLMapConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -6278,7 +6314,9 @@ exports.install = (globalObject, globalNames) => {
     arrayBufferViewDupConsumer(b) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'arrayBufferViewDupConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -6307,7 +6345,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get buf' called on an object that is not a valid instance of TypedefsAndUnions.\\");
       }
 
       return utils.tryWrapperForImpl(esValue[implSymbol][\\"buf\\"]);
@@ -6317,7 +6355,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set buf' called on an object that is not a valid instance of TypedefsAndUnions.\\");
       }
 
       if (utils.isArrayBuffer(V)) {
@@ -6338,7 +6376,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get time' called on an object that is not a valid instance of TypedefsAndUnions.\\");
       }
 
       return esValue[implSymbol][\\"time\\"];
@@ -6348,7 +6386,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set time' called on an object that is not a valid instance of TypedefsAndUnions.\\");
       }
 
       V = conversions[\\"unsigned long long\\"](V, {
@@ -6501,7 +6539,7 @@ exports.install = (globalObject, globalNames) => {
     toJSON() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'toJSON' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol].toJSON();
@@ -6511,7 +6549,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get href' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"href\\"];
@@ -6521,7 +6559,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set href' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, { context: \\"Failed to set the 'href' property on 'URL': The provided value\\" });
@@ -6532,7 +6570,7 @@ exports.install = (globalObject, globalNames) => {
     toString() {
       const esValue = this;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'toString' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"href\\"];
@@ -6542,7 +6580,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get origin' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"origin\\"];
@@ -6552,7 +6590,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get protocol' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"protocol\\"];
@@ -6562,7 +6600,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set protocol' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, {
@@ -6576,7 +6614,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get username' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"username\\"];
@@ -6586,7 +6624,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set username' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, {
@@ -6600,7 +6638,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get password' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"password\\"];
@@ -6610,7 +6648,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set password' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, {
@@ -6624,7 +6662,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get host' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"host\\"];
@@ -6634,7 +6672,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set host' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, { context: \\"Failed to set the 'host' property on 'URL': The provided value\\" });
@@ -6646,7 +6684,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get hostname' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"hostname\\"];
@@ -6656,7 +6694,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set hostname' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, {
@@ -6670,7 +6708,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get port' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"port\\"];
@@ -6680,7 +6718,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set port' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, { context: \\"Failed to set the 'port' property on 'URL': The provided value\\" });
@@ -6692,7 +6730,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get pathname' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"pathname\\"];
@@ -6702,7 +6740,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set pathname' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, {
@@ -6716,7 +6754,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get search' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"search\\"];
@@ -6726,7 +6764,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set search' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, { context: \\"Failed to set the 'search' property on 'URL': The provided value\\" });
@@ -6738,7 +6776,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get searchParams' called on an object that is not a valid instance of URL.\\");
       }
 
       return utils.getSameObject(this, \\"searchParams\\", () => {
@@ -6750,7 +6788,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get hash' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"hash\\"];
@@ -6760,7 +6798,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set hash' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, { context: \\"Failed to set the 'hash' property on 'URL': The provided value\\" });
@@ -7000,7 +7038,7 @@ exports.install = (globalObject, globalNames) => {
     item(index) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'item' called on an object that is not a valid instance of URLList.\\");
       }
 
       if (arguments.length < 1) {
@@ -7023,7 +7061,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get length' called on an object that is not a valid instance of URLList.\\");
       }
 
       return esValue[implSymbol][\\"length\\"];
@@ -7439,7 +7477,7 @@ exports.install = (globalObject, globalNames) => {
     append(name, value) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'append' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       if (arguments.length < 2) {
@@ -7470,7 +7508,7 @@ exports.install = (globalObject, globalNames) => {
     delete(name) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'delete' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       if (arguments.length < 1) {
@@ -7494,7 +7532,7 @@ exports.install = (globalObject, globalNames) => {
     get(name) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       if (arguments.length < 1) {
@@ -7518,7 +7556,7 @@ exports.install = (globalObject, globalNames) => {
     getAll(name) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'getAll' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       if (arguments.length < 1) {
@@ -7542,7 +7580,7 @@ exports.install = (globalObject, globalNames) => {
     has(name) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'has' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       if (arguments.length < 1) {
@@ -7566,7 +7604,7 @@ exports.install = (globalObject, globalNames) => {
     set(name, value) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       if (arguments.length < 2) {
@@ -7597,7 +7635,7 @@ exports.install = (globalObject, globalNames) => {
     sort() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'sort' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       return esValue[implSymbol].sort();
@@ -7606,36 +7644,36 @@ exports.install = (globalObject, globalNames) => {
     toString() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'toString' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       return esValue[implSymbol].toString();
     }
 
     keys() {
-      if (!this || !exports.is(this)) {
-        throw new TypeError(\\"Illegal invocation\\");
+      if (!exports.is(this)) {
+        throw new TypeError(\\"'keys' called on an object that is not a valid instance of URLSearchParams.\\");
       }
       return exports.createDefaultIterator(this, \\"key\\");
     }
 
     values() {
-      if (!this || !exports.is(this)) {
-        throw new TypeError(\\"Illegal invocation\\");
+      if (!exports.is(this)) {
+        throw new TypeError(\\"'values' called on an object that is not a valid instance of URLSearchParams.\\");
       }
       return exports.createDefaultIterator(this, \\"value\\");
     }
 
     entries() {
-      if (!this || !exports.is(this)) {
-        throw new TypeError(\\"Illegal invocation\\");
+      if (!exports.is(this)) {
+        throw new TypeError(\\"'entries' called on an object that is not a valid instance of URLSearchParams.\\");
       }
       return exports.createDefaultIterator(this, \\"key+value\\");
     }
 
     forEach(callback) {
-      if (!this || !exports.is(this)) {
-        throw new TypeError(\\"Illegal invocation\\");
+      if (!exports.is(this)) {
+        throw new TypeError(\\"'forEach' called on an object that is not a valid instance of URLSearchParams.\\");
       }
       if (arguments.length < 1) {
         throw new TypeError(\\"Failed to execute 'forEach' on 'iterable': 1 argument required, \\" + \\"but only 0 present.\\");
@@ -7787,7 +7825,7 @@ exports.install = (globalObject, globalNames) => {
     item(index) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'item' called on an object that is not a valid instance of URLSearchParamsCollection.\\");
       }
 
       if (arguments.length < 1) {
@@ -7811,7 +7849,9 @@ exports.install = (globalObject, globalNames) => {
     namedItem(name) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'namedItem' called on an object that is not a valid instance of URLSearchParamsCollection.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -7836,7 +7876,9 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'get length' called on an object that is not a valid instance of URLSearchParamsCollection.\\"
+        );
       }
 
       return esValue[implSymbol][\\"length\\"];
@@ -8489,7 +8531,7 @@ exports.install = (globalObject, globalNames) => {
     operation(sequence) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'operation' called on an object that is not a valid instance of UnderscoredProperties.\\");
       }
 
       if (arguments.length < 1) {
@@ -8527,7 +8569,9 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'get attribute' called on an object that is not a valid instance of UnderscoredProperties.\\"
+        );
       }
 
       return esValue[implSymbol][\\"attribute\\"];
@@ -8537,7 +8581,9 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'set attribute' called on an object that is not a valid instance of UnderscoredProperties.\\"
+        );
       }
 
       V = conversions[\\"byte\\"](V, {
@@ -8688,7 +8734,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get unscopableTest' called on an object that is not a valid instance of Unscopable.\\");
       }
 
       return esValue[implSymbol][\\"unscopableTest\\"];
@@ -8698,7 +8744,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set unscopableTest' called on an object that is not a valid instance of Unscopable.\\");
       }
 
       V = conversions[\\"boolean\\"](V, {
@@ -8712,7 +8758,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get unscopableMixin' called on an object that is not a valid instance of Unscopable.\\");
       }
 
       return esValue[implSymbol][\\"unscopableMixin\\"];
@@ -8722,7 +8768,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set unscopableMixin' called on an object that is not a valid instance of Unscopable.\\");
       }
 
       V = conversions[\\"boolean\\"](V, {
@@ -8853,7 +8899,7 @@ exports.install = (globalObject, globalNames) => {
     simple1() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'simple1' called on an object that is not a valid instance of Variadic.\\");
       }
       const args = [];
       for (let i = 0; i < arguments.length; i++) {
@@ -8869,7 +8915,7 @@ exports.install = (globalObject, globalNames) => {
     simple2(first) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'simple2' called on an object that is not a valid instance of Variadic.\\");
       }
 
       if (arguments.length < 1) {
@@ -8896,7 +8942,7 @@ exports.install = (globalObject, globalNames) => {
     overloaded1() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'overloaded1' called on an object that is not a valid instance of Variadic.\\");
       }
       const args = [];
       switch (arguments.length) {
@@ -8929,7 +8975,7 @@ exports.install = (globalObject, globalNames) => {
     overloaded2(first) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'overloaded2' called on an object that is not a valid instance of Variadic.\\");
       }
 
       if (arguments.length < 1) {
@@ -9318,7 +9364,7 @@ exports.install = (globalObject, globalNames) => {
     bs(source) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'bs' called on an object that is not a valid instance of BufferSourceTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -9346,7 +9392,7 @@ exports.install = (globalObject, globalNames) => {
     ab(ab) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'ab' called on an object that is not a valid instance of BufferSourceTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -9370,7 +9416,7 @@ exports.install = (globalObject, globalNames) => {
     abv(abv) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'abv' called on an object that is not a valid instance of BufferSourceTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -9397,7 +9443,7 @@ exports.install = (globalObject, globalNames) => {
     u8a(u8) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'u8a' called on an object that is not a valid instance of BufferSourceTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -9421,7 +9467,7 @@ exports.install = (globalObject, globalNames) => {
     abUnion(ab) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'abUnion' called on an object that is not a valid instance of BufferSourceTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -9448,7 +9494,7 @@ exports.install = (globalObject, globalNames) => {
     u8aUnion(ab) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'u8aUnion' called on an object that is not a valid instance of BufferSourceTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -9605,7 +9651,7 @@ exports.install = (globalObject, globalNames) => {
     method() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'method' called on an object that is not a valid instance of CEReactions.\\");
       }
 
       return esValue[implSymbol].method();
@@ -9615,7 +9661,7 @@ exports.install = (globalObject, globalNames) => {
       try {
         const esValue = this !== null && this !== undefined ? this : globalObject;
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'promiseOperation' called on an object that is not a valid instance of CEReactions.\\");
         }
 
         return utils.tryWrapperForImpl(esValue[implSymbol].promiseOperation());
@@ -9628,7 +9674,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get attr' called on an object that is not a valid instance of CEReactions.\\");
       }
 
       return esValue[implSymbol][\\"attr\\"];
@@ -9638,7 +9684,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set attr' called on an object that is not a valid instance of CEReactions.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, {
@@ -9653,7 +9699,9 @@ exports.install = (globalObject, globalNames) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(
+            \\"'get promiseAttribute' called on an object that is not a valid instance of CEReactions.\\"
+          );
         }
 
         return utils.tryWrapperForImpl(esValue[implSymbol][\\"promiseAttribute\\"]);
@@ -10043,7 +10091,9 @@ exports.install = (globalObject, globalNames) => {
     createDocumentType(qualifiedName, publicId, systemId) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'createDocumentType' called on an object that is not a valid instance of DOMImplementation.\\"
+        );
       }
 
       if (arguments.length < 3) {
@@ -10081,7 +10131,7 @@ exports.install = (globalObject, globalNames) => {
     createDocument(namespace, qualifiedName) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'createDocument' called on an object that is not a valid instance of DOMImplementation.\\");
       }
 
       if (arguments.length < 2) {
@@ -10130,7 +10180,9 @@ exports.install = (globalObject, globalNames) => {
     createHTMLDocument() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'createHTMLDocument' called on an object that is not a valid instance of DOMImplementation.\\"
+        );
       }
       const args = [];
       {
@@ -10148,7 +10200,7 @@ exports.install = (globalObject, globalNames) => {
     hasFeature() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'hasFeature' called on an object that is not a valid instance of DOMImplementation.\\");
       }
 
       return esValue[implSymbol].hasFeature();
@@ -10318,7 +10370,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get x' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       return esValue[implSymbol][\\"x\\"];
@@ -10328,7 +10380,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set x' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       V = conversions[\\"unrestricted double\\"](V, {
@@ -10342,7 +10394,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get y' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       return esValue[implSymbol][\\"y\\"];
@@ -10352,7 +10404,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set y' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       V = conversions[\\"unrestricted double\\"](V, {
@@ -10366,7 +10418,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get width' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       return esValue[implSymbol][\\"width\\"];
@@ -10376,7 +10428,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set width' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       V = conversions[\\"unrestricted double\\"](V, {
@@ -10390,7 +10442,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get height' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       return esValue[implSymbol][\\"height\\"];
@@ -10400,7 +10452,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set height' called on an object that is not a valid instance of DOMRect.\\");
       }
 
       V = conversions[\\"unrestricted double\\"](V, {
@@ -10628,7 +10680,7 @@ exports.install = (globalObject, globalNames) => {
     op() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'op' called on an object that is not a valid instance of DictionaryConvert.\\");
       }
       const args = [];
       {
@@ -10764,7 +10816,7 @@ exports.install = (globalObject, globalNames) => {
     op(destination) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'op' called on an object that is not a valid instance of Enum.\\");
       }
 
       if (arguments.length < 1) {
@@ -10785,7 +10837,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get attr' called on an object that is not a valid instance of Enum.\\");
       }
 
       return utils.tryWrapperForImpl(esValue[implSymbol][\\"attr\\"]);
@@ -10795,7 +10847,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set attr' called on an object that is not a valid instance of Enum.\\");
       }
 
       V = \`\${V}\`;
@@ -10962,7 +11014,7 @@ exports.install = (globalObject, globalNames) => {
     addEventListener(type, callback) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'addEventListener' called on an object that is not a valid instance of EventTarget.\\");
       }
 
       if (arguments.length < 2) {
@@ -11068,7 +11120,7 @@ exports._internalSetup = (wrapper, globalObject) => {
       op() {
         const esValue = this !== null && this !== undefined ? this : globalObject;
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'op' called on an object that is not a valid instance of Global.\\");
         }
 
         return esValue[implSymbol].op();
@@ -11076,7 +11128,7 @@ exports._internalSetup = (wrapper, globalObject) => {
       unforgeableOp() {
         const esValue = this !== null && this !== undefined ? this : globalObject;
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'unforgeableOp' called on an object that is not a valid instance of Global.\\");
         }
 
         return esValue[implSymbol].unforgeableOp();
@@ -11085,7 +11137,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get attr' called on an object that is not a valid instance of Global.\\");
         }
 
         return esValue[implSymbol][\\"attr\\"];
@@ -11094,7 +11146,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'set attr' called on an object that is not a valid instance of Global.\\");
         }
 
         V = conversions[\\"DOMString\\"](V, {
@@ -11107,7 +11159,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get unforgeableAttr' called on an object that is not a valid instance of Global.\\");
         }
 
         return esValue[implSymbol][\\"unforgeableAttr\\"];
@@ -11116,7 +11168,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'set unforgeableAttr' called on an object that is not a valid instance of Global.\\");
         }
 
         V = conversions[\\"DOMString\\"](V, {
@@ -11129,7 +11181,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get length' called on an object that is not a valid instance of Global.\\");
         }
 
         return esValue[implSymbol][\\"length\\"];
@@ -11138,7 +11190,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'set length' called on an object that is not a valid instance of Global.\\");
         }
 
         V = conversions[\\"unsigned long\\"](V, {
@@ -11450,7 +11502,9 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'get lenientSetter' called on an object that is not a valid instance of LegacyLenientAttributes.\\"
+        );
       }
 
       return esValue[implSymbol][\\"lenientSetter\\"];
@@ -11460,7 +11514,9 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'set lenientSetter' called on an object that is not a valid instance of LegacyLenientAttributes.\\"
+        );
       }
     }
 
@@ -11609,7 +11665,7 @@ exports._internalSetup = (wrapper, globalObject) => {
       assign(url) {
         const esValue = this !== null && this !== undefined ? this : globalObject;
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'assign' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         if (arguments.length < 1) {
@@ -11633,7 +11689,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get href' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         return esValue[implSymbol][\\"href\\"];
@@ -11642,7 +11698,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'set href' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         V = conversions[\\"USVString\\"](V, {
@@ -11654,7 +11710,7 @@ exports._internalSetup = (wrapper, globalObject) => {
       toString() {
         const esValue = this;
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'toString' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         return esValue[implSymbol][\\"href\\"];
@@ -11663,7 +11719,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get origin' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         return esValue[implSymbol][\\"origin\\"];
@@ -11672,7 +11728,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get protocol' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         return esValue[implSymbol][\\"protocol\\"];
@@ -11681,7 +11737,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'set protocol' called on an object that is not a valid instance of LegacyUnforgeable.\\");
         }
 
         V = conversions[\\"USVString\\"](V, {
@@ -11819,7 +11875,7 @@ exports._internalSetup = (wrapper, globalObject) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'get a' called on an object that is not a valid instance of LegacyUnforgeableMap.\\");
         }
 
         return esValue[implSymbol][\\"a\\"];
@@ -12166,7 +12222,7 @@ exports.install = (globalObject, globalNames) => {
     mixedInOp() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'mixedInOp' called on an object that is not a valid instance of MixedIn.\\");
       }
 
       return esValue[implSymbol].mixedInOp();
@@ -12175,7 +12231,7 @@ exports.install = (globalObject, globalNames) => {
     ifaceMixinOp() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'ifaceMixinOp' called on an object that is not a valid instance of MixedIn.\\");
       }
 
       return esValue[implSymbol].ifaceMixinOp();
@@ -12185,7 +12241,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get mixedInAttr' called on an object that is not a valid instance of MixedIn.\\");
       }
 
       return esValue[implSymbol][\\"mixedInAttr\\"];
@@ -12195,7 +12251,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set mixedInAttr' called on an object that is not a valid instance of MixedIn.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, {
@@ -12209,7 +12265,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get ifaceMixinAttr' called on an object that is not a valid instance of MixedIn.\\");
       }
 
       return esValue[implSymbol][\\"ifaceMixinAttr\\"];
@@ -12219,7 +12275,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set ifaceMixinAttr' called on an object that is not a valid instance of MixedIn.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, {
@@ -12453,7 +12509,7 @@ exports.install = (globalObject, globalNames) => {
     compatible(arg1) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'compatible' called on an object that is not a valid instance of Overloads.\\");
       }
 
       if (arguments.length < 1) {
@@ -12523,7 +12579,7 @@ exports.install = (globalObject, globalNames) => {
     incompatible1(arg1) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'incompatible1' called on an object that is not a valid instance of Overloads.\\");
       }
 
       if (arguments.length < 1) {
@@ -12560,7 +12616,7 @@ exports.install = (globalObject, globalNames) => {
     incompatible2(arg1) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'incompatible2' called on an object that is not a valid instance of Overloads.\\");
       }
 
       if (arguments.length < 1) {
@@ -12603,7 +12659,7 @@ exports.install = (globalObject, globalNames) => {
     incompatible3(arg1) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'incompatible3' called on an object that is not a valid instance of Overloads.\\");
       }
 
       if (arguments.length < 1) {
@@ -12813,7 +12869,9 @@ exports._internalSetup = (wrapper, globalObject) => {
         try {
           const esValue = this !== null && this !== undefined ? this : globalObject;
           if (!exports.is(esValue)) {
-            throw new TypeError(\\"Illegal invocation\\");
+            throw new TypeError(
+              \\"'unforgeablePromiseOperation' called on an object that is not a valid instance of PromiseTypes.\\"
+            );
           }
 
           return utils.tryWrapperForImpl(esValue[implSymbol].unforgeablePromiseOperation());
@@ -12826,7 +12884,9 @@ exports._internalSetup = (wrapper, globalObject) => {
           const esValue = this !== null && this !== undefined ? this : globalObject;
 
           if (!exports.is(esValue)) {
-            throw new TypeError(\\"Illegal invocation\\");
+            throw new TypeError(
+              \\"'get unforgeablePromiseAttribute' called on an object that is not a valid instance of PromiseTypes.\\"
+            );
           }
 
           return utils.tryWrapperForImpl(esValue[implSymbol][\\"unforgeablePromiseAttribute\\"]);
@@ -12889,7 +12949,7 @@ exports.install = (globalObject, globalNames) => {
     voidPromiseConsumer(p) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'voidPromiseConsumer' called on an object that is not a valid instance of PromiseTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -12911,7 +12971,7 @@ exports.install = (globalObject, globalNames) => {
     promiseConsumer(p) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'promiseConsumer' called on an object that is not a valid instance of PromiseTypes.\\");
       }
 
       if (arguments.length < 1) {
@@ -12934,7 +12994,7 @@ exports.install = (globalObject, globalNames) => {
       try {
         const esValue = this !== null && this !== undefined ? this : globalObject;
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(\\"'promiseOperation' called on an object that is not a valid instance of PromiseTypes.\\");
         }
 
         return utils.tryWrapperForImpl(esValue[implSymbol].promiseOperation());
@@ -12948,7 +13008,9 @@ exports.install = (globalObject, globalNames) => {
         const esValue = this !== null && this !== undefined ? this : globalObject;
 
         if (!exports.is(esValue)) {
-          throw new TypeError(\\"Illegal invocation\\");
+          throw new TypeError(
+            \\"'get promiseAttribute' called on an object that is not a valid instance of PromiseTypes.\\"
+          );
         }
 
         return utils.tryWrapperForImpl(esValue[implSymbol][\\"promiseAttribute\\"]);
@@ -13098,7 +13160,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get reflectedBoolean' called on an object that is not a valid instance of Reflect.\\");
       }
 
       return esValue[implSymbol][\\"reflectedBoolean\\"];
@@ -13108,7 +13170,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set reflectedBoolean' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"boolean\\"](V, {
@@ -13122,7 +13184,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get reflectedDOMString' called on an object that is not a valid instance of Reflect.\\");
       }
 
       return esValue[implSymbol][\\"reflectedDOMString\\"];
@@ -13132,7 +13194,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set reflectedDOMString' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, {
@@ -13146,7 +13208,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get reflectedLong' called on an object that is not a valid instance of Reflect.\\");
       }
 
       return esValue[implSymbol][\\"reflectedLong\\"];
@@ -13156,7 +13218,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set reflectedLong' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"long\\"](V, {
@@ -13170,7 +13232,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get reflectedUnsignedLong' called on an object that is not a valid instance of Reflect.\\");
       }
 
       return esValue[implSymbol][\\"reflectedUnsignedLong\\"];
@@ -13180,7 +13242,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set reflectedUnsignedLong' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"unsigned long\\"](V, {
@@ -13194,7 +13256,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get reflectedUSVStringURL' called on an object that is not a valid instance of Reflect.\\");
       }
 
       return esValue[implSymbol][\\"reflectedUSVStringURL\\"];
@@ -13204,7 +13266,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set reflectedUSVStringURL' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"USVString\\"](V, {
@@ -13218,7 +13280,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get reflectionTest' called on an object that is not a valid instance of Reflect.\\");
       }
 
       return esValue[implSymbol][\\"reflectionTest\\"];
@@ -13228,7 +13290,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set reflectionTest' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, {
@@ -13242,7 +13304,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get withUnderscore' called on an object that is not a valid instance of Reflect.\\");
       }
 
       return esValue[implSymbol][\\"withUnderscore\\"];
@@ -13252,7 +13314,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set withUnderscore' called on an object that is not a valid instance of Reflect.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, {
@@ -13384,7 +13446,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get replaceable' called on an object that is not a valid instance of Replaceable.\\");
       }
 
       return esValue[implSymbol][\\"replaceable\\"];
@@ -13394,7 +13456,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set replaceable' called on an object that is not a valid instance of Replaceable.\\");
       }
 
       Object.defineProperty(esValue, \\"replaceable\\", {
@@ -13554,7 +13616,7 @@ exports.install = (globalObject, globalNames) => {
     recordConsumer(rec) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'recordConsumer' called on an object that is not a valid instance of SeqAndRec.\\");
       }
 
       if (arguments.length < 1) {
@@ -13599,7 +13661,7 @@ exports.install = (globalObject, globalNames) => {
     recordConsumer2(rec) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'recordConsumer2' called on an object that is not a valid instance of SeqAndRec.\\");
       }
 
       if (arguments.length < 1) {
@@ -13644,7 +13706,7 @@ exports.install = (globalObject, globalNames) => {
     sequenceConsumer(seq) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'sequenceConsumer' called on an object that is not a valid instance of SeqAndRec.\\");
       }
 
       if (arguments.length < 1) {
@@ -13681,7 +13743,7 @@ exports.install = (globalObject, globalNames) => {
     sequenceConsumer2(seq) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'sequenceConsumer2' called on an object that is not a valid instance of SeqAndRec.\\");
       }
 
       if (arguments.length < 1) {
@@ -13716,7 +13778,7 @@ exports.install = (globalObject, globalNames) => {
     frozenArrayConsumer(arr) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'frozenArrayConsumer' called on an object that is not a valid instance of SeqAndRec.\\");
       }
 
       if (arguments.length < 1) {
@@ -13870,7 +13932,7 @@ exports.install = (globalObject, globalNames) => {
     def() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'def' called on an object that is not a valid instance of Static.\\");
       }
 
       return esValue[implSymbol].def();
@@ -13880,7 +13942,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get abc' called on an object that is not a valid instance of Static.\\");
       }
 
       return esValue[implSymbol][\\"abc\\"];
@@ -13890,7 +13952,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set abc' called on an object that is not a valid instance of Static.\\");
       }
 
       V = conversions[\\"DOMString\\"](V, { context: \\"Failed to set the 'abc' property on 'Static': The provided value\\" });
@@ -14037,7 +14099,7 @@ exports.install = (globalObject, globalNames) => {
     key(index) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'key' called on an object that is not a valid instance of Storage.\\");
       }
 
       if (arguments.length < 1) {
@@ -14057,7 +14119,7 @@ exports.install = (globalObject, globalNames) => {
     getItem(key) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'getItem' called on an object that is not a valid instance of Storage.\\");
       }
 
       if (arguments.length < 1) {
@@ -14077,7 +14139,7 @@ exports.install = (globalObject, globalNames) => {
     setItem(key, value) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'setItem' called on an object that is not a valid instance of Storage.\\");
       }
 
       if (arguments.length < 2) {
@@ -14102,7 +14164,7 @@ exports.install = (globalObject, globalNames) => {
     removeItem(key) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'removeItem' called on an object that is not a valid instance of Storage.\\");
       }
 
       if (arguments.length < 1) {
@@ -14124,7 +14186,7 @@ exports.install = (globalObject, globalNames) => {
     clear() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'clear' called on an object that is not a valid instance of Storage.\\");
       }
 
       return esValue[implSymbol].clear();
@@ -14134,7 +14196,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get length' called on an object that is not a valid instance of Storage.\\");
       }
 
       return esValue[implSymbol][\\"length\\"];
@@ -14425,7 +14487,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get attr' called on an object that is not a valid instance of StringifierAttribute.\\");
       }
 
       return esValue[implSymbol][\\"attr\\"];
@@ -14434,7 +14496,7 @@ exports.install = (globalObject, globalNames) => {
     toString() {
       const esValue = this;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'toString' called on an object that is not a valid instance of StringifierAttribute.\\");
       }
 
       return esValue[implSymbol][\\"attr\\"];
@@ -14558,7 +14620,9 @@ exports.install = (globalObject, globalNames) => {
     toString() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'toString' called on an object that is not a valid instance of StringifierDefaultOperation.\\"
+        );
       }
 
       return esValue[implSymbol].toString();
@@ -14681,7 +14745,9 @@ exports.install = (globalObject, globalNames) => {
     operation() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'operation' called on an object that is not a valid instance of StringifierNamedOperation.\\"
+        );
       }
 
       return esValue[implSymbol].operation();
@@ -14690,7 +14756,9 @@ exports.install = (globalObject, globalNames) => {
     toString() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'toString' called on an object that is not a valid instance of StringifierNamedOperation.\\"
+        );
       }
 
       return esValue[implSymbol].operation();
@@ -14812,7 +14880,7 @@ exports.install = (globalObject, globalNames) => {
     toString() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'toString' called on an object that is not a valid instance of StringifierOperation.\\");
       }
 
       return esValue[implSymbol].toString();
@@ -14935,7 +15003,9 @@ exports.install = (globalObject, globalNames) => {
     numOrStrConsumer(a) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'numOrStrConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -14966,7 +15036,9 @@ exports.install = (globalObject, globalNames) => {
     numOrEnumConsumer(a) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'numOrEnumConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -15000,7 +15072,9 @@ exports.install = (globalObject, globalNames) => {
     numOrStrOrNullConsumer(a) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'numOrStrOrNullConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -15037,7 +15111,9 @@ exports.install = (globalObject, globalNames) => {
     numOrStrOrURLOrNullConsumer(a) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'numOrStrOrURLOrNullConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -15076,7 +15152,9 @@ exports.install = (globalObject, globalNames) => {
     urlMapInnerConsumer(a) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'urlMapInnerConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -15123,7 +15201,7 @@ exports.install = (globalObject, globalNames) => {
     urlMapConsumer(a) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'urlMapConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\");
       }
 
       if (arguments.length < 1) {
@@ -15174,7 +15252,9 @@ exports.install = (globalObject, globalNames) => {
     bufferSourceOrURLConsumer(b) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'bufferSourceOrURLConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -15205,7 +15285,9 @@ exports.install = (globalObject, globalNames) => {
     arrayBufferViewOrURLMapConsumer(b) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'arrayBufferViewOrURLMapConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -15272,7 +15354,9 @@ exports.install = (globalObject, globalNames) => {
     arrayBufferViewDupConsumer(b) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'arrayBufferViewDupConsumer' called on an object that is not a valid instance of TypedefsAndUnions.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -15301,7 +15385,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get buf' called on an object that is not a valid instance of TypedefsAndUnions.\\");
       }
 
       return utils.tryWrapperForImpl(esValue[implSymbol][\\"buf\\"]);
@@ -15311,7 +15395,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set buf' called on an object that is not a valid instance of TypedefsAndUnions.\\");
       }
 
       if (utils.isArrayBuffer(V)) {
@@ -15332,7 +15416,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get time' called on an object that is not a valid instance of TypedefsAndUnions.\\");
       }
 
       return esValue[implSymbol][\\"time\\"];
@@ -15342,7 +15426,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set time' called on an object that is not a valid instance of TypedefsAndUnions.\\");
       }
 
       V = conversions[\\"unsigned long long\\"](V, {
@@ -15495,7 +15579,7 @@ exports.install = (globalObject, globalNames) => {
     toJSON() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'toJSON' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol].toJSON();
@@ -15505,7 +15589,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get href' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"href\\"];
@@ -15515,7 +15599,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set href' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, { context: \\"Failed to set the 'href' property on 'URL': The provided value\\" });
@@ -15526,7 +15610,7 @@ exports.install = (globalObject, globalNames) => {
     toString() {
       const esValue = this;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'toString' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"href\\"];
@@ -15536,7 +15620,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get origin' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"origin\\"];
@@ -15546,7 +15630,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get protocol' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"protocol\\"];
@@ -15556,7 +15640,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set protocol' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, {
@@ -15570,7 +15654,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get username' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"username\\"];
@@ -15580,7 +15664,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set username' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, {
@@ -15594,7 +15678,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get password' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"password\\"];
@@ -15604,7 +15688,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set password' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, {
@@ -15618,7 +15702,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get host' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"host\\"];
@@ -15628,7 +15712,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set host' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, { context: \\"Failed to set the 'host' property on 'URL': The provided value\\" });
@@ -15640,7 +15724,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get hostname' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"hostname\\"];
@@ -15650,7 +15734,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set hostname' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, {
@@ -15664,7 +15748,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get port' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"port\\"];
@@ -15674,7 +15758,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set port' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, { context: \\"Failed to set the 'port' property on 'URL': The provided value\\" });
@@ -15686,7 +15770,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get pathname' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"pathname\\"];
@@ -15696,7 +15780,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set pathname' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, {
@@ -15710,7 +15794,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get search' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"search\\"];
@@ -15720,7 +15804,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set search' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, { context: \\"Failed to set the 'search' property on 'URL': The provided value\\" });
@@ -15732,7 +15816,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get searchParams' called on an object that is not a valid instance of URL.\\");
       }
 
       return utils.getSameObject(this, \\"searchParams\\", () => {
@@ -15744,7 +15828,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get hash' called on an object that is not a valid instance of URL.\\");
       }
 
       return esValue[implSymbol][\\"hash\\"];
@@ -15754,7 +15838,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set hash' called on an object that is not a valid instance of URL.\\");
       }
 
       V = conversions[\\"USVString\\"](V, { context: \\"Failed to set the 'hash' property on 'URL': The provided value\\" });
@@ -15994,7 +16078,7 @@ exports.install = (globalObject, globalNames) => {
     item(index) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'item' called on an object that is not a valid instance of URLList.\\");
       }
 
       if (arguments.length < 1) {
@@ -16017,7 +16101,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get length' called on an object that is not a valid instance of URLList.\\");
       }
 
       return esValue[implSymbol][\\"length\\"];
@@ -16433,7 +16517,7 @@ exports.install = (globalObject, globalNames) => {
     append(name, value) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'append' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       if (arguments.length < 2) {
@@ -16464,7 +16548,7 @@ exports.install = (globalObject, globalNames) => {
     delete(name) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'delete' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       if (arguments.length < 1) {
@@ -16488,7 +16572,7 @@ exports.install = (globalObject, globalNames) => {
     get(name) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       if (arguments.length < 1) {
@@ -16512,7 +16596,7 @@ exports.install = (globalObject, globalNames) => {
     getAll(name) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'getAll' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       if (arguments.length < 1) {
@@ -16536,7 +16620,7 @@ exports.install = (globalObject, globalNames) => {
     has(name) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'has' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       if (arguments.length < 1) {
@@ -16560,7 +16644,7 @@ exports.install = (globalObject, globalNames) => {
     set(name, value) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       if (arguments.length < 2) {
@@ -16591,7 +16675,7 @@ exports.install = (globalObject, globalNames) => {
     sort() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'sort' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       return esValue[implSymbol].sort();
@@ -16600,36 +16684,36 @@ exports.install = (globalObject, globalNames) => {
     toString() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'toString' called on an object that is not a valid instance of URLSearchParams.\\");
       }
 
       return esValue[implSymbol].toString();
     }
 
     keys() {
-      if (!this || !exports.is(this)) {
-        throw new TypeError(\\"Illegal invocation\\");
+      if (!exports.is(this)) {
+        throw new TypeError(\\"'keys' called on an object that is not a valid instance of URLSearchParams.\\");
       }
       return exports.createDefaultIterator(this, \\"key\\");
     }
 
     values() {
-      if (!this || !exports.is(this)) {
-        throw new TypeError(\\"Illegal invocation\\");
+      if (!exports.is(this)) {
+        throw new TypeError(\\"'values' called on an object that is not a valid instance of URLSearchParams.\\");
       }
       return exports.createDefaultIterator(this, \\"value\\");
     }
 
     entries() {
-      if (!this || !exports.is(this)) {
-        throw new TypeError(\\"Illegal invocation\\");
+      if (!exports.is(this)) {
+        throw new TypeError(\\"'entries' called on an object that is not a valid instance of URLSearchParams.\\");
       }
       return exports.createDefaultIterator(this, \\"key+value\\");
     }
 
     forEach(callback) {
-      if (!this || !exports.is(this)) {
-        throw new TypeError(\\"Illegal invocation\\");
+      if (!exports.is(this)) {
+        throw new TypeError(\\"'forEach' called on an object that is not a valid instance of URLSearchParams.\\");
       }
       if (arguments.length < 1) {
         throw new TypeError(\\"Failed to execute 'forEach' on 'iterable': 1 argument required, \\" + \\"but only 0 present.\\");
@@ -16781,7 +16865,7 @@ exports.install = (globalObject, globalNames) => {
     item(index) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'item' called on an object that is not a valid instance of URLSearchParamsCollection.\\");
       }
 
       if (arguments.length < 1) {
@@ -16805,7 +16889,9 @@ exports.install = (globalObject, globalNames) => {
     namedItem(name) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'namedItem' called on an object that is not a valid instance of URLSearchParamsCollection.\\"
+        );
       }
 
       if (arguments.length < 1) {
@@ -16830,7 +16916,9 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'get length' called on an object that is not a valid instance of URLSearchParamsCollection.\\"
+        );
       }
 
       return esValue[implSymbol][\\"length\\"];
@@ -17483,7 +17571,7 @@ exports.install = (globalObject, globalNames) => {
     operation(sequence) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'operation' called on an object that is not a valid instance of UnderscoredProperties.\\");
       }
 
       if (arguments.length < 1) {
@@ -17521,7 +17609,9 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'get attribute' called on an object that is not a valid instance of UnderscoredProperties.\\"
+        );
       }
 
       return esValue[implSymbol][\\"attribute\\"];
@@ -17531,7 +17621,9 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(
+          \\"'set attribute' called on an object that is not a valid instance of UnderscoredProperties.\\"
+        );
       }
 
       V = conversions[\\"byte\\"](V, {
@@ -17682,7 +17774,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get unscopableTest' called on an object that is not a valid instance of Unscopable.\\");
       }
 
       return esValue[implSymbol][\\"unscopableTest\\"];
@@ -17692,7 +17784,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set unscopableTest' called on an object that is not a valid instance of Unscopable.\\");
       }
 
       V = conversions[\\"boolean\\"](V, {
@@ -17706,7 +17798,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'get unscopableMixin' called on an object that is not a valid instance of Unscopable.\\");
       }
 
       return esValue[implSymbol][\\"unscopableMixin\\"];
@@ -17716,7 +17808,7 @@ exports.install = (globalObject, globalNames) => {
       const esValue = this !== null && this !== undefined ? this : globalObject;
 
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'set unscopableMixin' called on an object that is not a valid instance of Unscopable.\\");
       }
 
       V = conversions[\\"boolean\\"](V, {
@@ -17847,7 +17939,7 @@ exports.install = (globalObject, globalNames) => {
     simple1() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'simple1' called on an object that is not a valid instance of Variadic.\\");
       }
       const args = [];
       for (let i = 0; i < arguments.length; i++) {
@@ -17863,7 +17955,7 @@ exports.install = (globalObject, globalNames) => {
     simple2(first) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'simple2' called on an object that is not a valid instance of Variadic.\\");
       }
 
       if (arguments.length < 1) {
@@ -17890,7 +17982,7 @@ exports.install = (globalObject, globalNames) => {
     overloaded1() {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'overloaded1' called on an object that is not a valid instance of Variadic.\\");
       }
       const args = [];
       switch (arguments.length) {
@@ -17923,7 +18015,7 @@ exports.install = (globalObject, globalNames) => {
     overloaded2(first) {
       const esValue = this !== null && this !== undefined ? this : globalObject;
       if (!exports.is(esValue)) {
-        throw new TypeError(\\"Illegal invocation\\");
+        throw new TypeError(\\"'overloaded2' called on an object that is not a valid instance of Variadic.\\");
       }
 
       if (arguments.length < 1) {