diff --git a/AK/SourceGenerator.h b/AK/SourceGenerator.h
index 4974de596ef..d7d2978392a 100644
--- a/AK/SourceGenerator.h
+++ b/AK/SourceGenerator.h
@@ -65,12 +65,12 @@ public:
 
     StringView as_string_view() const { return m_builder.string_view(); }
 
-    ErrorOr<void> try_append(StringView pattern)
+    void append(StringView pattern)
     {
         GenericLexer lexer { pattern };
 
         while (!lexer.is_eof()) {
-            TRY(m_builder.try_append(lexer.consume_until(m_opening)));
+            m_builder.append(lexer.consume_until(m_opening));
 
             if (lexer.consume_specific(m_opening)) {
                 auto const placeholder = lexer.consume_until(m_closing);
@@ -78,12 +78,11 @@ public:
                 if (!lexer.consume_specific(m_closing))
                     VERIFY_NOT_REACHED();
 
-                TRY(m_builder.try_append(get(placeholder)));
+                m_builder.append(get(placeholder));
             } else {
                 VERIFY(lexer.is_eof());
             }
         }
-        return {};
     }
 
     void appendln(StringView pattern)
@@ -105,9 +104,9 @@ public:
     }
 
     template<size_t N>
-    ErrorOr<void> try_append(char const (&pattern)[N])
+    void append(char const (&pattern)[N])
     {
-        return try_append(StringView { pattern, N - 1 });
+        append(StringView { pattern, N - 1 });
     }
 
     template<size_t N>
@@ -126,9 +125,6 @@ public:
     {
         set(StringView { key, N - 1 }, value);
     }
-    void append(StringView pattern) { MUST(try_append(pattern)); }
-    template<size_t N>
-    void append(char const (&pattern)[N]) { MUST(try_append(pattern)); }
 
 private:
     StringBuilder& m_builder;
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSEasingFunctions.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSEasingFunctions.cpp
index 51737ea4a1e..51381591ccb 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSEasingFunctions.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSEasingFunctions.cpp
@@ -44,7 +44,7 @@ ErrorOr<void> generate_header_file(JsonObject& easing_data, Core::File& file)
     StringBuilder builder;
     SourceGenerator generator { builder };
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 #pragma once
 
 #include <AK/Optional.h>
@@ -53,7 +53,7 @@ ErrorOr<void> generate_header_file(JsonObject& easing_data, Core::File& file)
 
 namespace Web::CSS {
 
-)~~~"));
+)~~~");
 
     generator.appendln("enum class EasingFunction {");
     TRY(easing_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
@@ -67,7 +67,7 @@ namespace Web::CSS {
     generator.appendln("Optional<EasingFunction> easing_function_from_string(StringView);");
     generator.appendln("StringView to_string(EasingFunction);");
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 enum class EasingFunctionParameterType {
     Integer,
     Number,
@@ -84,7 +84,7 @@ struct EasingFunctionMetadata {
     Vector<EasingFunctionParameter> parameters;
 };
 EasingFunctionMetadata easing_function_metadata(EasingFunction);
-)~~~"));
+)~~~");
 
     generator.appendln("\n}");
 
@@ -97,68 +97,68 @@ ErrorOr<void> generate_implementation_file(JsonObject& easing_data, Core::File&
     StringBuilder builder;
     SourceGenerator generator { builder };
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 #include <LibWeb/CSS/EasingFunctions.h>
 #include <AK/Assertions.h>
 
 namespace Web::CSS {
-)~~~"));
+)~~~");
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 Optional<EasingFunction> easing_function_from_string(StringView name)
 {
-)~~~"));
+)~~~");
     TRY(easing_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name", TRY(String::from_deprecated_string(name)));
         member_generator.set("name:titlecase", TRY(title_casify(name)));
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     if (name.equals_ignoring_ascii_case("@name@"sv))
         return EasingFunction::@name:titlecase@;
-)~~~"));
+)~~~");
         return {};
     }));
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     return {};
 }
-)~~~"));
+)~~~");
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 StringView to_string(EasingFunction easing_function)
 {
     switch (easing_function) {
-)~~~"));
+)~~~");
     TRY(easing_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name", TRY(String::from_deprecated_string(name)));
         member_generator.set("name:titlecase", TRY(title_casify(name)));
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     case EasingFunction::@name:titlecase@:
         return "@name@"sv;
-)~~~"));
+)~~~");
         return {};
     }));
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     default:
         VERIFY_NOT_REACHED();
     }
 }
-)~~~"));
+)~~~");
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 EasingFunctionMetadata easing_function_metadata(EasingFunction easing_function)
 {
     switch (easing_function) {
-)~~~"));
+)~~~");
     TRY(easing_data.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
 
         auto member_generator = TRY(generator.fork());
         member_generator.set("name:titlecase", TRY(title_casify(name)));
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     case EasingFunction::@name:titlecase@:
         return EasingFunctionMetadata {
-            .parameters = {)~~~"));
+            .parameters = {)~~~");
 
         if (auto parameters = value.as_object().get_array("parameters"sv); parameters.has_value()) {
             bool first = true;
@@ -189,28 +189,28 @@ EasingFunctionMetadata easing_function_metadata(EasingFunction easing_function)
                 else
                     VERIFY_NOT_REACHED();
 
-                TRY(member_generator.try_append(first ? " "sv : ", "sv));
+                member_generator.append(first ? " "sv : ", "sv);
                 first = false;
 
-                TRY(member_generator.try_append(TRY(String::formatted(
+                member_generator.append(TRY(String::formatted(
                     "{{ EasingFunctionParameterType::{}, {} }}",
                     parameter_type,
-                    is_optional ? "true"sv : "false"sv))));
+                    is_optional ? "true"sv : "false"sv)));
                 return {};
             }));
         }
 
-        TRY(member_generator.try_append(R"~~~( }
+        member_generator.append(R"~~~( }
     };
-)~~~"));
+)~~~");
         return {};
     }));
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     default:
         VERIFY_NOT_REACHED();
     }
 }
-)~~~"));
+)~~~");
 
     generator.appendln("\n}");
 
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSEnums.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSEnums.cpp
index d5fb90a5739..fa0d6dde974 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSEnums.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSEnums.cpp
@@ -43,7 +43,7 @@ ErrorOr<void> generate_header_file(JsonObject& enums_data, Core::File& file)
     StringBuilder builder;
     SourceGenerator generator { builder };
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 #pragma once
 
 #include <AK/Optional.h>
@@ -52,7 +52,7 @@ namespace Web::CSS {
 
 enum class ValueID;
 
-)~~~"));
+)~~~");
 
     TRY(enums_data.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_array());
@@ -90,7 +90,7 @@ enum class ValueID;
         enum_generator.appendln("Optional<@name:titlecase@> value_id_to_@name:snakecase@(ValueID);");
         enum_generator.appendln("ValueID to_value_id(@name:titlecase@);");
         enum_generator.appendln("StringView to_string(@name:titlecase@);");
-        TRY(enum_generator.try_append("\n"));
+        enum_generator.append("\n");
         return {};
     }));
 
@@ -105,12 +105,12 @@ ErrorOr<void> generate_implementation_file(JsonObject& enums_data, Core::File& f
     StringBuilder builder;
     SourceGenerator generator { builder };
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 #include <LibWeb/CSS/Enums.h>
 #include <LibWeb/CSS/ValueID.h>
 
 namespace Web::CSS {
-)~~~"));
+)~~~");
 
     TRY(enums_data.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_array());
@@ -120,10 +120,10 @@ namespace Web::CSS {
         enum_generator.set("name:titlecase", TRY(title_casify(name)));
         enum_generator.set("name:snakecase", TRY(snake_casify(name)));
 
-        TRY(enum_generator.try_append(R"~~~(
+        enum_generator.append(R"~~~(
 Optional<@name:titlecase@> value_id_to_@name:snakecase@(ValueID value_id)
 {
-    switch (value_id) {)~~~"));
+    switch (value_id) {)~~~");
 
         for (auto& member : members.values()) {
             auto member_generator = TRY(enum_generator.fork());
@@ -136,22 +136,22 @@ Optional<@name:titlecase@> value_id_to_@name:snakecase@(ValueID value_id)
                 member_generator.set("valueid:titlecase", TRY(title_casify(member_name)));
                 member_generator.set("member:titlecase", TRY(title_casify(member_name)));
             }
-            TRY(member_generator.try_append(R"~~~(
+            member_generator.append(R"~~~(
     case ValueID::@valueid:titlecase@:
-        return @name:titlecase@::@member:titlecase@;)~~~"));
+        return @name:titlecase@::@member:titlecase@;)~~~");
         }
 
-        TRY(enum_generator.try_append(R"~~~(
+        enum_generator.append(R"~~~(
     default:
         return {};
     }
 }
-)~~~"));
+)~~~");
 
-        TRY(enum_generator.try_append(R"~~~(
+        enum_generator.append(R"~~~(
 ValueID to_value_id(@name:titlecase@ @name:snakecase@_value)
 {
-    switch (@name:snakecase@_value) {)~~~"));
+    switch (@name:snakecase@_value) {)~~~");
 
         for (auto& member : members.values()) {
             auto member_generator = TRY(enum_generator.fork());
@@ -160,22 +160,22 @@ ValueID to_value_id(@name:titlecase@ @name:snakecase@_value)
                 continue;
             member_generator.set("member:titlecase", TRY(title_casify(member_name)));
 
-            TRY(member_generator.try_append(R"~~~(
+            member_generator.append(R"~~~(
     case @name:titlecase@::@member:titlecase@:
-        return ValueID::@member:titlecase@;)~~~"));
+        return ValueID::@member:titlecase@;)~~~");
         }
 
-        TRY(enum_generator.try_append(R"~~~(
+        enum_generator.append(R"~~~(
     default:
         VERIFY_NOT_REACHED();
     }
 }
-)~~~"));
+)~~~");
 
-        TRY(enum_generator.try_append(R"~~~(
+        enum_generator.append(R"~~~(
 StringView to_string(@name:titlecase@ value)
 {
-    switch (value) {)~~~"));
+    switch (value) {)~~~");
 
         for (auto& member : members.values()) {
             auto member_generator = TRY(enum_generator.fork());
@@ -185,17 +185,17 @@ StringView to_string(@name:titlecase@ value)
             member_generator.set("member:css", TRY(String::from_deprecated_string(member_name)));
             member_generator.set("member:titlecase", TRY(title_casify(member_name)));
 
-            TRY(member_generator.try_append(R"~~~(
+            member_generator.append(R"~~~(
     case @name:titlecase@::@member:titlecase@:
-        return "@member:css@"sv;)~~~"));
+        return "@member:css@"sv;)~~~");
         }
 
-        TRY(enum_generator.try_append(R"~~~(
+        enum_generator.append(R"~~~(
     default:
         VERIFY_NOT_REACHED();
     }
 }
-)~~~"));
+)~~~");
         return {};
     }));
 
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSMathFunctions.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSMathFunctions.cpp
index 8d07f4b9cfc..3d9ac5646b6 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSMathFunctions.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSMathFunctions.cpp
@@ -43,7 +43,7 @@ ErrorOr<void> generate_header_file(JsonObject& functions_data, Core::File& file)
     StringBuilder builder;
     SourceGenerator generator { builder };
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 // This file is generated by GenerateCSSMathFunctions.cpp
 
 #pragma once
@@ -51,7 +51,7 @@ ErrorOr<void> generate_header_file(JsonObject& functions_data, Core::File& file)
 namespace Web::CSS {
 
 enum class MathFunction {
-)~~~"));
+)~~~");
 
     TRY(functions_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
@@ -60,11 +60,11 @@ enum class MathFunction {
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 };
 
 }
-)~~~"));
+)~~~");
 
     TRY(file.write_until_depleted(generator.as_string_view().bytes()));
     return {};
@@ -77,7 +77,7 @@ ErrorOr<String> generate_calculation_type_check(StringView calculation_variable_
     bool first_type_check = true;
     for (auto const& allowed_type_name : allowed_types) {
         if (!first_type_check)
-            TRY(builder.try_append(" || "sv));
+            builder.append(" || "sv);
         first_type_check = false;
 
         if (allowed_type_name == "<angle>"sv) {
@@ -111,7 +111,7 @@ ErrorOr<void> generate_implementation_file(JsonObject& functions_data, Core::Fil
     StringBuilder builder;
     SourceGenerator generator { builder };
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 // This file is generated by GenerateCSSMathFunctions.cpp
 
 #include <AK/Debug.h>
@@ -148,7 +148,7 @@ OwnPtr<CalculationNode> Parser::parse_math_function(PropertyID property_id, Func
 {
     TokenStream stream { function.values() };
     auto arguments = parse_a_comma_separated_list_of_component_values(stream);
-)~~~"));
+)~~~");
 
     TRY(functions_data.try_for_each_member([&](auto& name, JsonValue const& value) -> ErrorOr<void> {
         auto& function_data = value.as_object();
@@ -160,7 +160,7 @@ OwnPtr<CalculationNode> Parser::parse_math_function(PropertyID property_id, Func
         function_generator.appendln("    if (function.name().equals_ignoring_ascii_case(\"@name:lowercase@\"sv)) {");
         if (function_data.get_bool("is-variadic"sv).value_or(false)) {
             // Variadic function
-            TRY(function_generator.try_append(R"~~~(
+            function_generator.append(R"~~~(
         CSSNumericType determined_argument_type;
         Vector<NonnullOwnPtr<CalculationNode>> parsed_arguments;
         parsed_arguments.ensure_capacity(arguments.size());
@@ -179,13 +179,13 @@ OwnPtr<CalculationNode> Parser::parse_math_function(PropertyID property_id, Func
             }
             auto argument_type = maybe_argument_type.release_value();
 
-)~~~"));
+)~~~");
             // Generate some type checks
             VERIFY(parameters.size() == 1);
             auto& parameter_data = parameters[0].as_object();
             auto parameter_type_string = parameter_data.get_deprecated_string("type"sv).value();
             function_generator.set("type_check", TRY(generate_calculation_type_check("argument_type"sv, parameter_type_string)));
-            TRY(function_generator.try_append(R"~~~(
+            function_generator.append(R"~~~(
             if (!(@type_check@)) {
                 dbgln_if(CSS_PARSER_DEBUG, "@name:lowercase@() argument #{} type ({}) is not an accepted type", parsed_arguments.size(), MUST(argument_type.dump()));
                 return nullptr;
@@ -205,7 +205,7 @@ OwnPtr<CalculationNode> Parser::parse_math_function(PropertyID property_id, Func
 
         return @name:titlecase@CalculationNode::create(move(parsed_arguments));
     }
-)~~~"));
+)~~~");
 
         } else {
             // Function with specified parameters.
@@ -219,14 +219,14 @@ OwnPtr<CalculationNode> Parser::parse_math_function(PropertyID property_id, Func
             function_generator.set("min_argument_count", TRY(String::number(min_argument_count)));
             function_generator.set("max_argument_count", TRY(String::number(max_argument_count)));
 
-            TRY(function_generator.try_append(R"~~~(
+            function_generator.append(R"~~~(
         if (arguments.size() < @min_argument_count@ || arguments.size() > @max_argument_count@) {
             dbgln_if(CSS_PARSER_DEBUG, "@name:lowercase@() has wrong number of arguments {}, expected between @min_argument_count@ and @max_argument_count@ inclusive", arguments.size());
             return nullptr;
         }
         size_t argument_index = 0;
         [[maybe_unused]] CSSNumericType previous_argument_type;
-)~~~"));
+)~~~");
 
             size_t parameter_index = 0;
             StringView previous_parameter_type_string;
@@ -268,45 +268,45 @@ OwnPtr<CalculationNode> Parser::parse_math_function(PropertyID property_id, Func
                     }
                 }
 
-                TRY(parameter_generator.try_append(R"~~~(
+                parameter_generator.append(R"~~~(
         @parameter_type@ parameter_@parameter_index@@parameter_default@;
-)~~~"));
+)~~~");
 
                 if (parameter_required) {
-                    TRY(parameter_generator.try_append(R"~~~(
+                    parameter_generator.append(R"~~~(
         if (argument_index >= arguments.size()) {
             dbgln_if(CSS_PARSER_DEBUG, "@name:lowercase@() missing required argument '@parameter_name@'");
             return nullptr;
         } else {
-)~~~"));
+)~~~");
                 } else {
-                    TRY(parameter_generator.try_append(R"~~~(
+                    parameter_generator.append(R"~~~(
         if (argument_index < arguments.size()) {
-)~~~"));
+)~~~");
                 }
 
-                TRY(parameter_generator.try_append(R"~~~(
+                parameter_generator.append(R"~~~(
             auto maybe_parsed_argument_@parameter_index@ = @parse_function@;
             if (maybe_parsed_argument_@parameter_index@@check_function@) {
                 parameter_@parameter_index@ = maybe_parsed_argument_@parameter_index@@release_function@;
                 argument_index++;
-)~~~"));
+)~~~");
                 if (parameter_required) {
-                    TRY(parameter_generator.try_append(R"~~~(
+                    parameter_generator.append(R"~~~(
             } else {
                 dbgln_if(CSS_PARSER_DEBUG, "@name:lowercase@() required argument '@parameter_name@' failed to parse");
                 return nullptr;
-)~~~"));
+)~~~");
                 }
-                TRY(parameter_generator.try_append(R"~~~(
+                parameter_generator.append(R"~~~(
             }
         }
-)~~~"));
+)~~~");
 
                 if (parameter_is_calculation) {
                     auto parameter_type_variable = TRY(String::formatted("argument_type_{}", parameter_index));
                     parameter_generator.set("type_check", TRY(generate_calculation_type_check(parameter_type_variable, parameter_type_string)));
-                    TRY(parameter_generator.try_append(R"~~~(
+                    parameter_generator.append(R"~~~(
         auto maybe_argument_type_@parameter_index@ = parameter_@parameter_index@->determine_type(property_id);
         if (!maybe_argument_type_@parameter_index@.has_value()) {
             dbgln_if(CSS_PARSER_DEBUG, "@name:lowercase@() argument '@parameter_name@' couldn't determine its type");
@@ -318,21 +318,21 @@ OwnPtr<CalculationNode> Parser::parse_math_function(PropertyID property_id, Func
             dbgln_if(CSS_PARSER_DEBUG, "@name:lowercase@() argument '@parameter_name@' type ({}) is not an accepted type", MUST(argument_type_@parameter_index@.dump()));
             return nullptr;
         }
-)~~~"));
+)~~~");
 
                     // NOTE: In all current cases, the parameters that take the same types must resolve to the same CSSNumericType.
                     //       This is a bit of a hack, but serves our needs for now.
                     if (previous_parameter_type_string == parameter_type_string) {
-                        TRY(parameter_generator.try_append(R"~~~(
+                        parameter_generator.append(R"~~~(
         if (argument_type_@parameter_index@ != previous_argument_type) {
             dbgln_if(CSS_PARSER_DEBUG, "@name:lowercase@() argument '@parameter_name@' type ({}) doesn't match type of previous arguments ({})", MUST(argument_type_@parameter_index@.dump()), MUST(previous_argument_type.dump()));
             return nullptr;
         }
-)~~~"));
+)~~~");
                     }
-                    TRY(parameter_generator.try_append(R"~~~(
+                    parameter_generator.append(R"~~~(
         previous_argument_type = argument_type_@parameter_index@;
-)~~~"));
+)~~~");
                 }
 
                 parameter_index++;
@@ -341,7 +341,7 @@ OwnPtr<CalculationNode> Parser::parse_math_function(PropertyID property_id, Func
             }));
 
             // Generate the call to the constructor
-            TRY(function_generator.try_append("        return @name:titlecase@CalculationNode::create("sv));
+            function_generator.append("        return @name:titlecase@CalculationNode::create("sv);
             parameter_index = 0;
             TRY(parameters.try_for_each([&](JsonValue const& parameter_value) -> ErrorOr<void> {
                 auto& parameter = parameter_value.as_object();
@@ -358,26 +358,26 @@ OwnPtr<CalculationNode> Parser::parse_math_function(PropertyID property_id, Func
                 }
 
                 if (parameter_index == 0) {
-                    TRY(parameter_generator.try_append("parameter_@parameter_index@@release_value@"sv));
+                    parameter_generator.append("parameter_@parameter_index@@release_value@"sv);
                 } else {
-                    TRY(parameter_generator.try_append(", parameter_@parameter_index@@release_value@"sv));
+                    parameter_generator.append(", parameter_@parameter_index@@release_value@"sv);
                 }
                 parameter_index++;
                 return {};
             }));
-            TRY(function_generator.try_append(R"~~~();
+            function_generator.append(R"~~~();
     }
-)~~~"));
+)~~~");
         }
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     return nullptr;
 }
 
 }
-)~~~"));
+)~~~");
 
     TRY(file.write_until_depleted(generator.as_string_view().bytes()));
     return {};
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSMediaFeatureID.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSMediaFeatureID.cpp
index e938c2b4646..cda82063b44 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSMediaFeatureID.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSMediaFeatureID.cpp
@@ -42,7 +42,7 @@ ErrorOr<void> generate_header_file(JsonObject& media_feature_data, Core::File& f
 {
     StringBuilder builder;
     SourceGenerator generator { builder };
-    TRY(generator.try_append(R"~~~(#pragma once
+    generator.append(R"~~~(#pragma once
 
 #include <AK/StringView.h>
 #include <AK/Traits.h>
@@ -58,17 +58,17 @@ enum class MediaFeatureValueType {
     Resolution,
 };
 
-enum class MediaFeatureID {)~~~"));
+enum class MediaFeatureID {)~~~");
 
     TRY(media_feature_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name:titlecase", TRY(title_casify(name)));
-        TRY(member_generator.try_append(R"~~~(
-    @name:titlecase@,)~~~"));
+        member_generator.append(R"~~~(
+    @name:titlecase@,)~~~");
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 };
 
 Optional<MediaFeatureID> media_feature_id_from_string(StringView);
@@ -79,7 +79,7 @@ bool media_feature_accepts_type(MediaFeatureID, MediaFeatureValueType);
 bool media_feature_accepts_identifier(MediaFeatureID, ValueID);
 
 }
-)~~~"));
+)~~~");
 
     TRY(file.write_until_depleted(generator.as_string_view().bytes()));
     return {};
@@ -89,23 +89,23 @@ ErrorOr<void> generate_implementation_file(JsonObject& media_feature_data, Core:
 {
     StringBuilder builder;
     SourceGenerator generator { builder };
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 #include <LibWeb/CSS/MediaFeatureID.h>
 #include <LibWeb/Infra/Strings.h>
 
 namespace Web::CSS {
 
 Optional<MediaFeatureID> media_feature_id_from_string(StringView string)
-{)~~~"));
+{)~~~");
 
     TRY(media_feature_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name", TRY(String::from_deprecated_string(name)));
         member_generator.set("name:titlecase", TRY(title_casify(name)));
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     if (Infra::is_ascii_case_insensitive_match(string, "@name@"sv))
         return MediaFeatureID::@name:titlecase@;
-)~~~"));
+)~~~");
         return {};
     }));
 
@@ -121,20 +121,20 @@ StringView string_from_media_feature_id(MediaFeatureID media_feature_id)
         auto member_generator = TRY(generator.fork());
         member_generator.set("name", TRY(String::from_deprecated_string(name)));
         member_generator.set("name:titlecase", TRY(title_casify(name)));
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     case MediaFeatureID::@name:titlecase@:
-        return "@name@"sv;)~~~"));
+        return "@name@"sv;)~~~");
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     }
     VERIFY_NOT_REACHED();
 }
 
 bool media_feature_type_is_range(MediaFeatureID media_feature_id)
 {
-    switch (media_feature_id) {)~~~"));
+    switch (media_feature_id) {)~~~");
 
     TRY(media_feature_data.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
@@ -146,20 +146,20 @@ bool media_feature_type_is_range(MediaFeatureID media_feature_id)
         auto feature_type = feature.get_deprecated_string("type"sv);
         VERIFY(feature_type.has_value());
         member_generator.set("is_range", feature_type.value() == "range" ? "true"_string : "false"_string);
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     case MediaFeatureID::@name:titlecase@:
-        return @is_range@;)~~~"));
+        return @is_range@;)~~~");
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     }
     VERIFY_NOT_REACHED();
 }
 
 bool media_feature_accepts_type(MediaFeatureID media_feature_id, MediaFeatureValueType value_type)
 {
-    switch (media_feature_id) {)~~~"));
+    switch (media_feature_id) {)~~~");
 
     TRY(media_feature_data.try_for_each_member([&](auto& name, auto& member) -> ErrorOr<void> {
         VERIFY(member.is_object());
@@ -167,15 +167,15 @@ bool media_feature_accepts_type(MediaFeatureID media_feature_id, MediaFeatureVal
 
         auto member_generator = TRY(generator.fork());
         member_generator.set("name:titlecase", TRY(title_casify(name)));
-        TRY(member_generator.try_append(R"~~~(
-    case MediaFeatureID::@name:titlecase@:)~~~"));
+        member_generator.append(R"~~~(
+    case MediaFeatureID::@name:titlecase@:)~~~");
 
         bool have_output_value_type_switch = false;
         if (feature.has("values"sv)) {
             auto append_value_type_switch_if_needed = [&]() -> ErrorOr<void> {
                 if (!have_output_value_type_switch) {
-                    TRY(member_generator.try_append(R"~~~(
-        switch (value_type) {)~~~"));
+                    member_generator.append(R"~~~(
+        switch (value_type) {)~~~");
                 }
                 have_output_value_type_switch = true;
                 return {};
@@ -191,29 +191,29 @@ bool media_feature_accepts_type(MediaFeatureID media_feature_id, MediaFeatureVal
                     continue;
                 if (type_name == "<mq-boolean>") {
                     TRY(append_value_type_switch_if_needed());
-                    TRY(member_generator.try_append(R"~~~(
+                    member_generator.append(R"~~~(
         case MediaFeatureValueType::Boolean:
-            return true;)~~~"));
+            return true;)~~~");
                 } else if (type_name == "<integer>") {
                     TRY(append_value_type_switch_if_needed());
-                    TRY(member_generator.try_append(R"~~~(
+                    member_generator.append(R"~~~(
         case MediaFeatureValueType::Integer:
-            return true;)~~~"));
+            return true;)~~~");
                 } else if (type_name == "<length>") {
                     TRY(append_value_type_switch_if_needed());
-                    TRY(member_generator.try_append(R"~~~(
+                    member_generator.append(R"~~~(
         case MediaFeatureValueType::Length:
-            return true;)~~~"));
+            return true;)~~~");
                 } else if (type_name == "<ratio>") {
                     TRY(append_value_type_switch_if_needed());
-                    TRY(member_generator.try_append(R"~~~(
+                    member_generator.append(R"~~~(
         case MediaFeatureValueType::Ratio:
-            return true;)~~~"));
+            return true;)~~~");
                 } else if (type_name == "<resolution>") {
                     TRY(append_value_type_switch_if_needed());
-                    TRY(member_generator.try_append(R"~~~(
+                    member_generator.append(R"~~~(
         case MediaFeatureValueType::Resolution:
-            return true;)~~~"));
+            return true;)~~~");
                 } else {
                     warnln("Unrecognized media-feature value type: `{}`", type_name);
                     VERIFY_NOT_REACHED();
@@ -221,25 +221,25 @@ bool media_feature_accepts_type(MediaFeatureID media_feature_id, MediaFeatureVal
             }
         }
         if (have_output_value_type_switch) {
-            TRY(member_generator.try_append(R"~~~(
+            member_generator.append(R"~~~(
         default:
             return false;
-        })~~~"));
+        })~~~");
         } else {
-            TRY(member_generator.try_append(R"~~~(
-        return false;)~~~"));
+            member_generator.append(R"~~~(
+        return false;)~~~");
         }
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     }
     VERIFY_NOT_REACHED();
 }
 
 bool media_feature_accepts_identifier(MediaFeatureID media_feature_id, ValueID identifier)
 {
-    switch (media_feature_id) {)~~~"));
+    switch (media_feature_id) {)~~~");
 
     TRY(media_feature_data.try_for_each_member([&](auto& name, auto& member) -> ErrorOr<void> {
         VERIFY(member.is_object());
@@ -247,15 +247,15 @@ bool media_feature_accepts_identifier(MediaFeatureID media_feature_id, ValueID i
 
         auto member_generator = TRY(generator.fork());
         member_generator.set("name:titlecase", TRY(title_casify(name)));
-        TRY(member_generator.try_append(R"~~~(
-    case MediaFeatureID::@name:titlecase@:)~~~"));
+        member_generator.append(R"~~~(
+    case MediaFeatureID::@name:titlecase@:)~~~");
 
         bool have_output_identifier_switch = false;
         if (feature.has("values"sv)) {
             auto append_identifier_switch_if_needed = [&]() -> ErrorOr<void> {
                 if (!have_output_identifier_switch) {
-                    TRY(member_generator.try_append(R"~~~(
-        switch (identifier) {)~~~"));
+                    member_generator.append(R"~~~(
+        switch (identifier) {)~~~");
                 }
                 have_output_identifier_switch = true;
                 return {};
@@ -273,30 +273,30 @@ bool media_feature_accepts_identifier(MediaFeatureID media_feature_id, ValueID i
 
                 auto ident_generator = TRY(member_generator.fork());
                 ident_generator.set("identifier:titlecase", TRY(title_casify(identifier_name)));
-                TRY(ident_generator.try_append(R"~~~(
+                ident_generator.append(R"~~~(
         case ValueID::@identifier:titlecase@:
-            return true;)~~~"));
+            return true;)~~~");
             }
         }
         if (have_output_identifier_switch) {
-            TRY(member_generator.try_append(R"~~~(
+            member_generator.append(R"~~~(
         default:
             return false;
-        })~~~"));
+        })~~~");
         } else {
-            TRY(member_generator.try_append(R"~~~(
-        return false;)~~~"));
+            member_generator.append(R"~~~(
+        return false;)~~~");
         }
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     }
     VERIFY_NOT_REACHED();
 }
 
 }
-)~~~"));
+)~~~");
 
     TRY(file.write_until_depleted(generator.as_string_view().bytes()));
     return {};
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPropertyID.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPropertyID.cpp
index 83d2b53150b..345b049ed81 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPropertyID.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPropertyID.cpp
@@ -91,7 +91,7 @@ ErrorOr<void> generate_header_file(JsonObject& properties, Core::File& file)
 {
     StringBuilder builder;
     SourceGenerator generator { builder };
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 #pragma once
 
 #include <AK/NonnullRefPtr.h>
@@ -106,7 +106,7 @@ enum class PropertyID {
     Invalid,
     Custom,
     All,
-)~~~"));
+)~~~");
 
     Vector<DeprecatedString> shorthand_property_ids;
     Vector<DeprecatedString> longhand_property_ids;
@@ -126,18 +126,18 @@ enum class PropertyID {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name:titlecase", TRY(title_casify(name)));
 
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     @name:titlecase@,
-)~~~"));
+)~~~");
     }
 
     for (auto& name : longhand_property_ids) {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name:titlecase", TRY(title_casify(name)));
 
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     @name:titlecase@,
-)~~~"));
+)~~~");
     }
 
     generator.set("first_property_id", TRY(title_casify(first_property_id)));
@@ -149,7 +149,7 @@ enum class PropertyID {
     generator.set("first_longhand_property_id", TRY(title_casify(longhand_property_ids.first())));
     generator.set("last_longhand_property_id", TRY(title_casify(longhand_property_ids.last())));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 };
 
 Optional<PropertyID> property_id_from_camel_case_string(StringView);
@@ -223,7 +223,7 @@ struct Traits<Web::CSS::PropertyID> : public GenericTraits<Web::CSS::PropertyID>
     static unsigned hash(Web::CSS::PropertyID property_id) { return int_hash((unsigned)property_id); }
 };
 } // namespace AK
-)~~~"));
+)~~~");
 
     TRY(file.write_until_depleted(generator.as_string_view().bytes()));
     return {};
@@ -235,11 +235,11 @@ ErrorOr<void> generate_bounds_checking_function(JsonObject& properties, SourceGe
     generator.set("css_type_name", TRY(String::from_utf8(css_type_name)));
     generator.set("type_name", TRY(String::from_utf8(type_name)));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 bool property_accepts_@css_type_name@(PropertyID property_id, [[maybe_unused]] @type_name@ const& value)
 {
     switch (property_id) {
-)~~~"));
+)~~~");
 
     TRY(properties.try_for_each_member([&](auto& name, JsonValue const& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
@@ -252,9 +252,9 @@ bool property_accepts_@css_type_name@(PropertyID property_id, [[maybe_unused]] @
                 auto property_generator = TRY(generator.fork());
                 property_generator.set("property_name:titlecase", TRY(title_casify(name)));
 
-                TRY(property_generator.try_append(R"~~~(
+                property_generator.append(R"~~~(
     case PropertyID::@property_name:titlecase@:
-        return )~~~"));
+        return )~~~");
 
                 if (type_and_range.size() > 1) {
                     auto range = type_and_range[1];
@@ -279,7 +279,7 @@ bool property_accepts_@css_type_name@(PropertyID property_id, [[maybe_unused]] @
                             property_generator.set("value_number", TRY(String::from_utf8(value_string)));
                             property_generator.set("value_getter", TRY(String::from_utf8(value_getter.value())));
                             property_generator.set("comparator", TRY(String::from_utf8(comparator)));
-                            TRY(property_generator.try_append("@value_getter@ @comparator@ @value_number@"));
+                            property_generator.append("@value_getter@ @comparator@ @value_number@");
                             return {};
                         }
 
@@ -292,14 +292,14 @@ bool property_accepts_@css_type_name@(PropertyID property_id, [[maybe_unused]] @
                         property_generator.set("value_number", TRY(String::from_utf8(value_number)));
                         property_generator.set("value_unit", TRY(title_casify(value_unit)));
                         property_generator.set("comparator", TRY(String::from_utf8(comparator)));
-                        TRY(property_generator.try_append("value @comparator@ @type_name@(@value_number@, @type_name@::Type::@value_unit@)"));
+                        property_generator.append("value @comparator@ @type_name@(@value_number@, @type_name@::Type::@value_unit@)");
                         return {};
                     };
 
                     if (!min_value_string.is_empty())
                         TRY(output_check(min_value_string, ">="sv));
                     if (!min_value_string.is_empty() && !max_value_string.is_empty())
-                        TRY(property_generator.try_append(" && "));
+                        property_generator.append(" && ");
                     if (!max_value_string.is_empty())
                         TRY(output_check(max_value_string, "<="sv));
                     property_generator.appendln(";");
@@ -312,12 +312,12 @@ bool property_accepts_@css_type_name@(PropertyID property_id, [[maybe_unused]] @
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     default:
         return false;
     }
 }
-)~~~"));
+)~~~");
     return {};
 }
 
@@ -326,7 +326,7 @@ ErrorOr<void> generate_implementation_file(JsonObject& properties, Core::File& f
     StringBuilder builder;
     SourceGenerator generator { builder };
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 #include <AK/Assertions.h>
 #include <LibWeb/CSS/Enums.h>
 #include <LibWeb/CSS/Parser/Parser.h>
@@ -340,7 +340,7 @@ namespace Web::CSS {
 
 Optional<PropertyID> property_id_from_camel_case_string(StringView string)
 {
-)~~~"));
+)~~~");
 
     TRY(properties.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
@@ -349,14 +349,14 @@ Optional<PropertyID> property_id_from_camel_case_string(StringView string)
         member_generator.set("name", TRY(String::from_deprecated_string(name)));
         member_generator.set("name:titlecase", TRY(title_casify(name)));
         member_generator.set("name:camelcase", TRY(camel_casify(name)));
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     if (string.equals_ignoring_ascii_case("@name:camelcase@"sv))
         return PropertyID::@name:titlecase@;
-)~~~"));
+)~~~");
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     return {};
 }
 
@@ -364,7 +364,7 @@ Optional<PropertyID> property_id_from_string(StringView string)
 {
     if (Infra::is_ascii_case_insensitive_match(string, "all"sv))
         return PropertyID::All;
-)~~~"));
+)~~~");
 
     TRY(properties.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
@@ -372,20 +372,20 @@ Optional<PropertyID> property_id_from_string(StringView string)
         auto member_generator = TRY(generator.fork());
         member_generator.set("name", TRY(String::from_deprecated_string(name)));
         member_generator.set("name:titlecase", TRY(title_casify(name)));
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     if (Infra::is_ascii_case_insensitive_match(string, "@name@"sv))
         return PropertyID::@name:titlecase@;
-)~~~"));
+)~~~");
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     return {};
 }
 
 StringView string_from_property_id(PropertyID property_id) {
     switch (property_id) {
-)~~~"));
+)~~~");
 
     TRY(properties.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
@@ -393,14 +393,14 @@ StringView string_from_property_id(PropertyID property_id) {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name", TRY(String::from_deprecated_string(name)));
         member_generator.set("name:titlecase", TRY(title_casify(name)));
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     case PropertyID::@name:titlecase@:
         return "@name@"sv;
-)~~~"));
+)~~~");
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     default:
         return "(invalid CSS::PropertyID)"sv;
     }
@@ -409,7 +409,7 @@ StringView string_from_property_id(PropertyID property_id) {
 bool is_inherited_property(PropertyID property_id)
 {
     switch (property_id) {
-)~~~"));
+)~~~");
 
     TRY(properties.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
@@ -424,15 +424,15 @@ bool is_inherited_property(PropertyID property_id)
         if (inherited) {
             auto member_generator = TRY(generator.fork());
             member_generator.set("name:titlecase", TRY(title_casify(name)));
-            TRY(member_generator.try_append(R"~~~(
+            member_generator.append(R"~~~(
     case PropertyID::@name:titlecase@:
         return true;
-)~~~"));
+)~~~");
         }
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     default:
         return false;
     }
@@ -441,7 +441,7 @@ bool is_inherited_property(PropertyID property_id)
 bool property_affects_layout(PropertyID property_id)
 {
     switch (property_id) {
-)~~~"));
+)~~~");
 
     TRY(properties.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
@@ -453,14 +453,14 @@ bool property_affects_layout(PropertyID property_id)
         if (affects_layout) {
             auto member_generator = TRY(generator.fork());
             member_generator.set("name:titlecase", TRY(title_casify(name)));
-            TRY(member_generator.try_append(R"~~~(
+            member_generator.append(R"~~~(
     case PropertyID::@name:titlecase@:
-)~~~"));
+)~~~");
         }
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
         return true;
     default:
         return false;
@@ -470,7 +470,7 @@ bool property_affects_layout(PropertyID property_id)
 bool property_affects_stacking_context(PropertyID property_id)
 {
     switch (property_id) {
-)~~~"));
+)~~~");
 
     TRY(properties.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
@@ -482,14 +482,14 @@ bool property_affects_stacking_context(PropertyID property_id)
         if (affects_stacking_context) {
             auto member_generator = TRY(generator.fork());
             member_generator.set("name:titlecase", TRY(title_casify(name)));
-            TRY(member_generator.try_append(R"~~~(
+            member_generator.append(R"~~~(
     case PropertyID::@name:titlecase@:
-)~~~"));
+)~~~");
         }
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
         return true;
     default:
         return false;
@@ -508,7 +508,7 @@ NonnullRefPtr<StyleValue> property_initial_value(JS::Realm& context_realm, Prope
 
     Parser::ParsingContext parsing_context(context_realm);
     switch (property_id) {
-)~~~"));
+)~~~");
 
     auto output_initial_value_code = [&](auto& name, auto& object) -> ErrorOr<void> {
         if (!object.has("initial"sv)) {
@@ -522,7 +522,7 @@ NonnullRefPtr<StyleValue> property_initial_value(JS::Realm& context_realm, Prope
         auto member_generator = TRY(generator.fork());
         member_generator.set("name:titlecase", TRY(title_casify(name)));
         member_generator.set("initial_value_string", TRY(String::from_deprecated_string(initial_value_string)));
-        TRY(member_generator.try_append(
+        member_generator.append(
             R"~~~(        case PropertyID::@name:titlecase@:
         {
             auto parsed_value = parse_css_value(parsing_context, "@initial_value_string@"sv, PropertyID::@name:titlecase@);
@@ -531,7 +531,7 @@ NonnullRefPtr<StyleValue> property_initial_value(JS::Realm& context_realm, Prope
             initial_values[to_underlying(PropertyID::@name:titlecase@)] = initial_value;
             return initial_value;
         }
-)~~~"));
+)~~~");
         return {};
     };
 
@@ -541,7 +541,7 @@ NonnullRefPtr<StyleValue> property_initial_value(JS::Realm& context_realm, Prope
         return {};
     }));
 
-    TRY(generator.try_append(
+    generator.append(
         R"~~~(        default: VERIFY_NOT_REACHED();
     }
     VERIFY_NOT_REACHED();
@@ -550,7 +550,7 @@ NonnullRefPtr<StyleValue> property_initial_value(JS::Realm& context_realm, Prope
 bool property_has_quirk(PropertyID property_id, Quirk quirk)
 {
     switch (property_id) {
-)~~~"));
+)~~~");
 
     TRY(properties.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
@@ -562,31 +562,31 @@ bool property_has_quirk(PropertyID property_id, Quirk quirk)
             if (!quirks.is_empty()) {
                 auto property_generator = TRY(generator.fork());
                 property_generator.set("name:titlecase", TRY(title_casify(name)));
-                TRY(property_generator.try_append(R"~~~(
+                property_generator.append(R"~~~(
     case PropertyID::@name:titlecase@: {
         switch (quirk) {
-)~~~"));
+)~~~");
                 for (auto& quirk : quirks.values()) {
                     VERIFY(quirk.is_string());
                     auto quirk_generator = TRY(property_generator.fork());
                     quirk_generator.set("quirk:titlecase", TRY(title_casify(quirk.as_string())));
-                    TRY(quirk_generator.try_append(R"~~~(
+                    quirk_generator.append(R"~~~(
         case Quirk::@quirk:titlecase@:
             return true;
-)~~~"));
+)~~~");
                 }
-                TRY(property_generator.try_append(R"~~~(
+                property_generator.append(R"~~~(
         default:
             return false;
         }
     }
-)~~~"));
+)~~~");
             }
         }
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     default:
         return false;
     }
@@ -595,7 +595,7 @@ bool property_has_quirk(PropertyID property_id, Quirk quirk)
 bool property_accepts_type(PropertyID property_id, ValueType value_type)
 {
     switch (property_id) {
-)~~~"));
+)~~~");
     TRY(properties.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
         auto& object = value.as_object();
@@ -603,10 +603,10 @@ bool property_accepts_type(PropertyID property_id, ValueType value_type)
             auto& valid_types = maybe_valid_types.value();
             auto property_generator = TRY(generator.fork());
             property_generator.set("name:titlecase", TRY(title_casify(name)));
-            TRY(property_generator.try_append(R"~~~(
+            property_generator.append(R"~~~(
     case PropertyID::@name:titlecase@: {
         switch (value_type) {
-)~~~"));
+)~~~");
 
             bool did_output_accepted_type = false;
             for (auto& type : valid_types.values()) {
@@ -658,16 +658,16 @@ bool property_accepts_type(PropertyID property_id, ValueType value_type)
             if (did_output_accepted_type)
                 property_generator.appendln("            return true;");
 
-            TRY(property_generator.try_append(R"~~~(
+            property_generator.append(R"~~~(
         default:
             return false;
         }
     }
-)~~~"));
+)~~~");
         }
         return {};
     }));
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     default:
         return false;
     }
@@ -676,7 +676,7 @@ bool property_accepts_type(PropertyID property_id, ValueType value_type)
 bool property_accepts_identifier(PropertyID property_id, ValueID identifier)
 {
     switch (property_id) {
-)~~~"));
+)~~~");
     TRY(properties.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
         auto& object = value.as_object();
@@ -693,12 +693,12 @@ bool property_accepts_identifier(PropertyID property_id, ValueID identifier)
                 identifier_generator.set("identifier:titlecase", TRY(title_casify(identifier.as_string())));
                 identifier_generator.appendln("        case ValueID::@identifier:titlecase@:");
             }
-            TRY(property_generator.try_append(R"~~~(
+            property_generator.append(R"~~~(
             return true;
         default:
             break;
         }
-)~~~"));
+)~~~");
         }
 
         if (auto maybe_valid_types = object.get_array("valid-types"sv); maybe_valid_types.has_value() && !maybe_valid_types->is_empty()) {
@@ -710,19 +710,19 @@ bool property_accepts_identifier(PropertyID property_id, ValueID identifier)
 
                 auto type_generator = TRY(generator.fork());
                 type_generator.set("type_name:snakecase", TRY(snake_casify(type_name)));
-                TRY(type_generator.try_append(R"~~~(
+                type_generator.append(R"~~~(
         if (value_id_to_@type_name:snakecase@(identifier).has_value())
             return true;
-)~~~"));
+)~~~");
             }
         }
-        TRY(property_generator.try_append(R"~~~(
+        property_generator.append(R"~~~(
         return false;
     }
-)~~~"));
+)~~~");
         return {};
     }));
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     default:
         return false;
     }
@@ -731,7 +731,7 @@ bool property_accepts_identifier(PropertyID property_id, ValueID identifier)
 Optional<ValueType> property_resolves_percentages_relative_to(PropertyID property_id)
 {
     switch (property_id) {
-)~~~"));
+)~~~");
 
     TRY(properties.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
@@ -739,15 +739,15 @@ Optional<ValueType> property_resolves_percentages_relative_to(PropertyID propert
             auto property_generator = TRY(generator.fork());
             property_generator.set("name:titlecase", TRY(title_casify(name)));
             property_generator.set("resolved_type:titlecase", TRY(title_casify(resolved_type.value())));
-            TRY(property_generator.try_append(R"~~~(
+            property_generator.append(R"~~~(
     case PropertyID::@name:titlecase@:
         return ValueType::@resolved_type:titlecase@;
-)~~~"));
+)~~~");
         }
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     default:
         return {};
     }
@@ -756,7 +756,7 @@ Optional<ValueType> property_resolves_percentages_relative_to(PropertyID propert
 size_t property_maximum_value_count(PropertyID property_id)
 {
     switch (property_id) {
-)~~~"));
+)~~~");
 
     TRY(properties.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
@@ -766,19 +766,19 @@ size_t property_maximum_value_count(PropertyID property_id)
             auto property_generator = TRY(generator.fork());
             property_generator.set("name:titlecase", TRY(title_casify(name)));
             property_generator.set("max_values", TRY(String::from_deprecated_string(max_values->to_deprecated_string())));
-            TRY(property_generator.try_append(R"~~~(
+            property_generator.append(R"~~~(
     case PropertyID::@name:titlecase@:
         return @max_values@;
-)~~~"));
+)~~~");
         }
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     default:
         return 1;
     }
-})~~~"));
+})~~~");
 
     TRY(generate_bounds_checking_function(properties, generator, "angle"sv, "Angle"sv, "Deg"sv));
     TRY(generate_bounds_checking_function(properties, generator, "frequency"sv, "Frequency"sv, "Hertz"sv));
@@ -789,11 +789,11 @@ size_t property_maximum_value_count(PropertyID property_id)
     TRY(generate_bounds_checking_function(properties, generator, "resolution"sv, "Resolution"sv, "Dpi"sv));
     TRY(generate_bounds_checking_function(properties, generator, "time"sv, "Time"sv, "S"sv));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 Vector<PropertyID> longhands_for_shorthand(PropertyID property_id)
 {
     switch (property_id) {
-)~~~"));
+)~~~");
     TRY(properties.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         if (value.as_object().has("longhands"sv)) {
             auto longhands = value.as_object().get("longhands"sv);
@@ -807,30 +807,30 @@ Vector<PropertyID> longhands_for_shorthand(PropertyID property_id)
                 if (first)
                     first = false;
                 else
-                    TRY(builder.try_append(", "sv));
+                    builder.append(", "sv);
                 TRY(builder.try_appendff("PropertyID::{}", TRY(title_casify(longhand.to_deprecated_string()))));
                 return IterationDecision::Continue;
             }));
             property_generator.set("longhands", builder.to_deprecated_string());
-            TRY(property_generator.try_append(R"~~~(
+            property_generator.append(R"~~~(
         case PropertyID::@name:titlecase@:
                 return { @longhands@ };
-)~~~"));
+)~~~");
         }
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
         default:
                 return { };
         }
 }
-)~~~"));
+)~~~");
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 
 } // namespace Web::CSS
-)~~~"));
+)~~~");
 
     TRY(file.write_until_depleted(generator.as_string_view().bytes()));
     return {};
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPseudoClass.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPseudoClass.cpp
index 348d9042cd8..a33823a0845 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPseudoClass.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPseudoClass.cpp
@@ -42,7 +42,7 @@ ErrorOr<void> generate_header_file(JsonObject& pseudo_classes_data, Core::File&
     StringBuilder builder;
     SourceGenerator generator { builder };
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 #pragma once
 
 #include <AK/Optional.h>
@@ -51,7 +51,7 @@ ErrorOr<void> generate_header_file(JsonObject& pseudo_classes_data, Core::File&
 namespace Web::CSS {
 
 enum class PseudoClass {
-)~~~"));
+)~~~");
 
     TRY(pseudo_classes_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
@@ -60,7 +60,7 @@ enum class PseudoClass {
         member_generator.appendln("    @name:titlecase@,");
         return {};
     }));
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 };
 
 Optional<PseudoClass> pseudo_class_from_string(StringView);
@@ -83,7 +83,7 @@ struct PseudoClassMetadata {
 PseudoClassMetadata pseudo_class_metadata(PseudoClass);
 
 }
-)~~~"));
+)~~~");
 
     TRY(file.write_until_depleted(generator.as_string_view().bytes()));
     return {};
@@ -94,28 +94,28 @@ ErrorOr<void> generate_implementation_file(JsonObject& pseudo_classes_data, Core
     StringBuilder builder;
     SourceGenerator generator { builder };
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 #include <LibWeb/CSS/PseudoClass.h>
 
 namespace Web::CSS {
 
 Optional<PseudoClass> pseudo_class_from_string(StringView string)
 {
-)~~~"));
+)~~~");
 
     TRY(pseudo_classes_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name", TRY(String::from_deprecated_string(name)));
         member_generator.set("name:titlecase", TRY(title_casify(name)));
 
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     if (string.equals_ignoring_ascii_case("@name@"sv))
         return PseudoClass::@name:titlecase@;
-)~~~"));
+)~~~");
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 
     return {};
 }
@@ -123,21 +123,21 @@ Optional<PseudoClass> pseudo_class_from_string(StringView string)
 StringView pseudo_class_name(PseudoClass pseudo_class)
 {
     switch (pseudo_class) {
-)~~~"));
+)~~~");
 
     TRY(pseudo_classes_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name", TRY(String::from_deprecated_string(name)));
         member_generator.set("name:titlecase", TRY(title_casify(name)));
 
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     case PseudoClass::@name:titlecase@:
         return "@name@"sv;
-)~~~"));
+)~~~");
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     }
     VERIFY_NOT_REACHED();
 }
@@ -145,7 +145,7 @@ StringView pseudo_class_name(PseudoClass pseudo_class)
 PseudoClassMetadata pseudo_class_metadata(PseudoClass pseudo_class)
 {
     switch (pseudo_class) {
-)~~~"));
+)~~~");
 
     TRY(pseudo_classes_data.try_for_each_member([&](auto& name, JsonValue const& value) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
@@ -187,24 +187,24 @@ PseudoClassMetadata pseudo_class_metadata(PseudoClass pseudo_class)
         member_generator.set("is_valid_as_function", is_valid_as_function ? "true"_string : "false"_string);
         member_generator.set("is_valid_as_identifier", is_valid_as_identifier ? "true"_string : "false"_string);
 
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     case PseudoClass::@name:titlecase@:
         return {
             .parameter_type = PseudoClassMetadata::ParameterType::@parameter_type@,
             .is_valid_as_function = @is_valid_as_function@,
             .is_valid_as_identifier = @is_valid_as_identifier@,
         };
-)~~~"));
+)~~~");
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     }
     VERIFY_NOT_REACHED();
 }
 
 }
-)~~~"));
+)~~~");
 
     TRY(file.write_until_depleted(generator.as_string_view().bytes()));
     return {};
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSTransformFunctions.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSTransformFunctions.cpp
index 5b7da4bc2e3..83364a0c15b 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSTransformFunctions.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSTransformFunctions.cpp
@@ -53,7 +53,7 @@ ErrorOr<void> generate_header_file(JsonObject& transforms_data, Core::File& file
     StringBuilder builder;
     SourceGenerator generator { builder };
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 #pragma once
 
 #include <AK/Optional.h>
@@ -62,7 +62,7 @@ ErrorOr<void> generate_header_file(JsonObject& transforms_data, Core::File& file
 
 namespace Web::CSS {
 
-)~~~"));
+)~~~");
 
     generator.appendln("enum class TransformFunction {");
     TRY(transforms_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
@@ -76,7 +76,7 @@ namespace Web::CSS {
     generator.appendln("Optional<TransformFunction> transform_function_from_string(StringView);");
     generator.appendln("StringView to_string(TransformFunction);");
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 enum class TransformFunctionParameterType {
     Angle,
     Length,
@@ -93,7 +93,7 @@ struct TransformFunctionMetadata {
     Vector<TransformFunctionParameter> parameters;
 };
 TransformFunctionMetadata transform_function_metadata(TransformFunction);
-)~~~"));
+)~~~");
 
     generator.appendln("\n}");
 
@@ -106,68 +106,68 @@ ErrorOr<void> generate_implementation_file(JsonObject& transforms_data, Core::Fi
     StringBuilder builder;
     SourceGenerator generator { builder };
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 #include <LibWeb/CSS/TransformFunctions.h>
 #include <AK/Assertions.h>
 
 namespace Web::CSS {
-)~~~"));
+)~~~");
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 Optional<TransformFunction> transform_function_from_string(StringView name)
 {
-)~~~"));
+)~~~");
     TRY(transforms_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name", TRY(String::from_deprecated_string(name)));
         member_generator.set("name:titlecase", TRY(title_casify_transform_function(name)));
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     if (name.equals_ignoring_ascii_case("@name@"sv))
         return TransformFunction::@name:titlecase@;
-)~~~"));
+)~~~");
         return {};
     }));
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     return {};
 }
-)~~~"));
+)~~~");
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 StringView to_string(TransformFunction transform_function)
 {
     switch (transform_function) {
-)~~~"));
+)~~~");
     TRY(transforms_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name", TRY(String::from_deprecated_string(name)));
         member_generator.set("name:titlecase", TRY(title_casify_transform_function(name)));
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     case TransformFunction::@name:titlecase@:
         return "@name@"sv;
-)~~~"));
+)~~~");
         return {};
     }));
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     default:
         VERIFY_NOT_REACHED();
     }
 }
-)~~~"));
+)~~~");
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 TransformFunctionMetadata transform_function_metadata(TransformFunction transform_function)
 {
     switch (transform_function) {
-)~~~"));
+)~~~");
     TRY(transforms_data.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
         VERIFY(value.is_object());
 
         auto member_generator = TRY(generator.fork());
         member_generator.set("name:titlecase", TRY(title_casify_transform_function(name)));
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     case TransformFunction::@name:titlecase@:
         return TransformFunctionMetadata {
-            .parameters = {)~~~"));
+            .parameters = {)~~~");
 
         JsonArray const& parameters = value.as_object().get_array("parameters"sv).value();
         bool first = true;
@@ -189,24 +189,24 @@ TransformFunctionMetadata transform_function_metadata(TransformFunction transfor
             else
                 VERIFY_NOT_REACHED();
 
-            TRY(member_generator.try_append(first ? " "sv : ", "sv));
+            member_generator.append(first ? " "sv : ", "sv);
             first = false;
 
-            TRY(member_generator.try_append(TRY(String::formatted("{{ TransformFunctionParameterType::{}, {}}}", parameter_type, value.as_object().get("required"sv)->to_deprecated_string()))));
+            member_generator.append(TRY(String::formatted("{{ TransformFunctionParameterType::{}, {}}}", parameter_type, value.as_object().get("required"sv)->to_deprecated_string())));
             return {};
         }));
 
-        TRY(member_generator.try_append(R"~~~( }
+        member_generator.append(R"~~~( }
     };
-)~~~"));
+)~~~");
         return {};
     }));
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     default:
         VERIFY_NOT_REACHED();
     }
 }
-)~~~"));
+)~~~");
 
     generator.appendln("\n}");
 
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSValueID.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSValueID.cpp
index 05f3d1ade23..4d9965658b1 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSValueID.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSValueID.cpp
@@ -43,7 +43,7 @@ ErrorOr<void> generate_header_file(JsonArray& identifier_data, Core::File& file)
 {
     StringBuilder builder;
     SourceGenerator generator { builder };
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 #pragma once
 
 #include <AK/StringView.h>
@@ -53,19 +53,19 @@ namespace Web::CSS {
 
 enum class ValueID {
     Invalid,
-)~~~"));
+)~~~");
 
     TRY(identifier_data.try_for_each([&](auto& name) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name:titlecase", TRY(title_casify(name.to_deprecated_string())));
 
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     @name:titlecase@,
-)~~~"));
+)~~~");
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 };
 
 Optional<ValueID> value_id_from_string(StringView);
@@ -73,7 +73,7 @@ StringView string_from_value_id(ValueID);
 
 }
 
-)~~~"));
+)~~~");
 
     TRY(file.write_until_depleted(generator.as_string_view().bytes()));
     return {};
@@ -84,7 +84,7 @@ ErrorOr<void> generate_implementation_file(JsonArray& identifier_data, Core::Fil
     StringBuilder builder;
     SourceGenerator generator { builder };
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 #include <AK/Assertions.h>
 #include <AK/HashMap.h>
 #include <LibWeb/CSS/ValueID.h>
@@ -92,19 +92,19 @@ ErrorOr<void> generate_implementation_file(JsonArray& identifier_data, Core::Fil
 namespace Web::CSS {
 
 HashMap<StringView, ValueID, AK::CaseInsensitiveASCIIStringViewTraits> g_stringview_to_value_id_map {
-)~~~"));
+)~~~");
 
     TRY(identifier_data.try_for_each([&](auto& name) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name", TRY(String::from_deprecated_string(name.to_deprecated_string())));
         member_generator.set("name:titlecase", TRY(title_casify(name.to_deprecated_string())));
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     {"@name@"sv, ValueID::@name:titlecase@},
-)~~~"));
+)~~~");
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
 };
 
 Optional<ValueID> value_id_from_string(StringView string)
@@ -114,27 +114,27 @@ Optional<ValueID> value_id_from_string(StringView string)
 
 StringView string_from_value_id(ValueID value_id) {
     switch (value_id) {
-)~~~"));
+)~~~");
 
     TRY(identifier_data.try_for_each([&](auto& name) -> ErrorOr<void> {
         auto member_generator = TRY(generator.fork());
         member_generator.set("name", TRY(String::from_deprecated_string(name.to_deprecated_string())));
         member_generator.set("name:titlecase", TRY(title_casify(name.to_deprecated_string())));
-        TRY(member_generator.try_append(R"~~~(
+        member_generator.append(R"~~~(
     case ValueID::@name:titlecase@:
         return "@name@"sv;
-        )~~~"));
+        )~~~");
         return {};
     }));
 
-    TRY(generator.try_append(R"~~~(
+    generator.append(R"~~~(
     default:
         return "(invalid CSS::ValueID)"sv;
     }
 }
 
 } // namespace Web::CSS
-)~~~"));
+)~~~");
 
     TRY(file.write_until_depleted(generator.as_string_view().bytes()));
     return {};