LibJS+Everywhere: Remove all VM::clear_exception() calls

Since VM::exception() no longer exists this is now useless. All of these
calls to clear_exception were just to clear the VM state after some
(potentially) failed evaluation and did not use the exception itself.

Meta/Lagom/Fuzzers/FuzzilliJs.cpp

@@ -214,7 +214,6 @@ int main(int, char**)
             auto completion = interpreter->run(parse_result.value());
             if (completion.is_error()) {
                 result = 1;
-                vm->clear_exception();
             }
         }
 

Userland/DevTools/HackStudio/Debugger/EvaluateExpressionDialog.cpp

@@ -123,7 +123,6 @@ void EvaluateExpressionDialog::handle_evaluation(const String& expression)
     }
 
     if (result.is_error()) {
-        m_interpreter->vm().clear_exception();
         output_html.append("Uncaught exception: ");
         auto error = *result.throw_completion().value();
         if (error.is_object())

Userland/Libraries/LibJS/Runtime/ArrayBufferConstructor.cpp

@@ -55,7 +55,6 @@ ThrowCompletionOr<Object*> ArrayBufferConstructor::construct(FunctionObject& new
         auto error = byte_length_or_error.release_error();
         if (error.value()->is_object() && is<RangeError>(error.value()->as_object())) {
             // Re-throw more specific RangeError
-            vm.clear_exception();
             return vm.throw_completion<RangeError>(global_object(), ErrorType::InvalidLength, "array buffer");
         }
         return error;

Userland/Libraries/LibJS/Runtime/AsyncFunctionDriverWrapper.cpp

@@ -38,7 +38,6 @@ ThrowCompletionOr<Value> AsyncFunctionDriverWrapper::react_to_async_task_complet
 
     if (generator_result.is_throw_completion()) {
         VERIFY(generator_result.throw_completion().type() == Completion::Type::Throw);
-        vm.clear_exception();
         auto promise = Promise::create(global_object);
         promise->reject(*generator_result.throw_completion().value());
         return promise;

Userland/Libraries/LibJS/Runtime/ObjectEnvironment.cpp

@@ -106,7 +106,6 @@ ThrowCompletionOr<void> ObjectEnvironment::set_mutable_binding(GlobalObject& glo
             return result_or_error.release_error();
         auto property = property_or_error.release_value();
         if (property.has_value() && !property->writable.value_or(true)) {
-            vm.clear_exception();
             return vm.throw_completion<TypeError>(global_object, ErrorType::DescWriteNonWritable, name);
         }
     }

Userland/Libraries/LibJS/Runtime/Promise.cpp

@@ -114,7 +114,6 @@ Promise::ResolvingFunctions Promise::create_resolving_functions()
         if (then.is_throw_completion()) {
             // a. Return RejectPromise(promise, then.[[Value]]).
             dbgln_if(PROMISE_DEBUG, "[Promise @ {} / PromiseResolvingFunction]: Exception while getting 'then' property, rejecting with error", &promise);
-            vm.clear_exception();
             return promise.reject(*then.throw_completion().value());
         }
 

Userland/Libraries/LibJS/Runtime/PromiseJobs.cpp

@@ -28,7 +28,6 @@ PromiseReactionJob::PromiseReactionJob(PromiseReaction& reaction, Value argument
 // 27.2.2.1 NewPromiseReactionJob ( reaction, argument ), https://tc39.es/ecma262/#sec-newpromisereactionjob
 ThrowCompletionOr<Value> PromiseReactionJob::call()
 {
-    auto& vm = this->vm();
     auto& global_object = this->global_object();
 
     // a. Let promiseCapability be reaction.[[Capability]].
@@ -83,8 +82,6 @@ ThrowCompletionOr<Value> PromiseReactionJob::call()
 
     // h. If handlerResult is an abrupt completion, then
     if (handler_result.is_abrupt()) {
-        vm.clear_exception();
-
         // i. Let status be Call(promiseCapability.[[Reject]], undefined, « handlerResult.[[Value]] »).
         auto* reject_function = promise_capability.value().reject;
         dbgln_if(PROMISE_DEBUG, "[PromiseReactionJob @ {}]: Calling PromiseCapability's reject function @ {}", this, reject_function);
@@ -125,7 +122,6 @@ PromiseResolveThenableJob::PromiseResolveThenableJob(Promise& promise_to_resolve
 // 27.2.2.2 NewPromiseResolveThenableJob ( promiseToResolve, thenable, then ), https://tc39.es/ecma262/#sec-newpromiseresolvethenablejob
 ThrowCompletionOr<Value> PromiseResolveThenableJob::call()
 {
-    auto& vm = this->vm();
     auto& global_object = this->global_object();
 
     // a. Let resolvingFunctions be CreateResolvingFunctions(promiseToResolve).
@@ -137,8 +133,6 @@ ThrowCompletionOr<Value> PromiseResolveThenableJob::call()
 
     // c. If thenCallResult is an abrupt completion, then
     if (then_call_result.is_error()) {
-        vm.clear_exception();
-
         // i. Let status be Call(resolvingFunctions.[[Reject]], undefined, « thenCallResult.[[Value]] »).
         dbgln_if(PROMISE_DEBUG, "[PromiseResolveThenableJob @ {}]: then_call_result is an abrupt completion, calling reject function with value {}", this, *then_call_result.throw_completion().value());
         auto status = JS::call(global_object, &reject_function, js_undefined(), *then_call_result.throw_completion().value());

Userland/Libraries/LibJS/Runtime/PromiseReaction.h

@@ -25,8 +25,6 @@ struct PromiseCapability {
         auto _temporary_try_or_reject_result = (expression);                                                                            \
         /* 1. If value is an abrupt completion, then */                                                                                 \
         if (_temporary_try_or_reject_result.is_error()) {                                                                               \
-            global_object.vm().clear_exception();                                                                                       \
-                                                                                                                                        \
             /* a. Perform ? Call(capability.[[Reject]], undefined, « value.[[Value]] »). */                                           \
             TRY(JS::call(global_object, *capability.reject, js_undefined(), *_temporary_try_or_reject_result.release_error().value())); \
                                                                                                                                         \
@@ -44,8 +42,6 @@ struct PromiseCapability {
         auto _temporary_try_or_reject_result = (expression);                                                                            \
         /* 1. If value is an abrupt completion, then */                                                                                 \
         if (_temporary_try_or_reject_result.is_error()) {                                                                               \
-            global_object.vm().clear_exception();                                                                                       \
-                                                                                                                                        \
             /* a. Perform ? Call(capability.[[Reject]], undefined, « value.[[Value]] »). */                                           \
             TRY(JS::call(global_object, *capability.reject, js_undefined(), *_temporary_try_or_reject_result.release_error().value())); \
                                                                                                                                         \

Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.cpp

@@ -77,8 +77,6 @@ ThrowCompletionOr<TimeZone*> create_temporal_time_zone(GlobalObject& global_obje
 
     // 4. If offsetNanosecondsResult is an abrupt completion, then
     if (offset_nanoseconds_result.is_throw_completion()) {
-        global_object.vm().clear_exception();
-
         // a. Assert: ! CanonicalizeTimeZoneName(identifier) is identifier.
         VERIFY(canonicalize_time_zone_name(identifier) == identifier);
 

Userland/Libraries/LibJS/Runtime/TypedArray.cpp

@@ -476,7 +476,6 @@ void TypedArrayBase::visit_edges(Visitor& visitor)
             auto error = array_length_or_error.release_error();                                                                        \
             if (error.value()->is_object() && is<RangeError>(error.value()->as_object())) {                                            \
                 /* Re-throw more specific RangeError */                                                                                \
-                vm.clear_exception();                                                                                                  \
                 return vm.throw_completion<RangeError>(global_object(), ErrorType::InvalidLength, "typed array");                      \
             }                                                                                                                          \
             return error;                                                                                                              \

Userland/Libraries/LibJS/Runtime/VM.h

@@ -48,7 +48,6 @@ public:
     void push_interpreter(Interpreter&);
     void pop_interpreter(Interpreter&);
 
-    void clear_exception() { }
     void dump_backtrace() const;
 
     class InterpreterExecutionScope {

Userland/Libraries/LibWeb/WebAssembly/WebAssemblyObject.cpp

@@ -159,10 +159,9 @@ JS_DEFINE_NATIVE_FUNCTION(WebAssemblyObject::compile)
     // FIXME: This shouldn't block!
     auto buffer_or_error = vm.argument(0).to_object(global_object);
     JS::Value rejection_value;
-    if (buffer_or_error.is_error()) {
+    if (buffer_or_error.is_error())
         rejection_value = *buffer_or_error.throw_completion().value();
-        vm.clear_exception();
-    }
+
     auto promise = JS::Promise::create(global_object);
     if (!rejection_value.is_empty()) {
         promise->reject(rejection_value);
@@ -217,7 +216,6 @@ JS::ThrowCompletionOr<size_t> WebAssemblyObject::instantiate_module(Wasm::Module
 
                             auto result_or_error = JS::call(global_object, function, JS::js_undefined(), move(argument_values));
                             if (result_or_error.is_error()) {
-                                vm.clear_exception();
                                 return Wasm::Trap();
                             }
                             if (type.results().is_empty())
@@ -325,7 +323,6 @@ JS_DEFINE_NATIVE_FUNCTION(WebAssemblyObject::instantiate)
     bool should_return_module = false;
     if (buffer_or_error.is_error()) {
         auto rejection_value = *buffer_or_error.throw_completion().value();
-        vm.clear_exception();
         promise->reject(rejection_value);
         return promise;
     }

Userland/Services/WebContent/ClientConnection.cpp

@@ -346,7 +346,6 @@ void ClientConnection::run_javascript(String const& js_source)
 
     if (result.is_error()) {
         dbgln("Exception :(");
-        interpreter.vm().clear_exception();
     }
 }
 

Userland/Services/WebContent/WebContentConsoleClient.cpp

@@ -51,7 +51,6 @@ void WebContentConsoleClient::handle_input(String const& js_source)
     }
 
     if (result.is_error()) {
-        m_interpreter->vm().clear_exception();
         output_html.append("Uncaught exception: ");
         auto error = *result.throw_completion().value();
         if (error.is_object())