AK: Make String::number() infallible

This API will always succeed in creating a String representing the
provided number in base-10.

AK/String.h

@@ -170,9 +170,9 @@ public:
     [[nodiscard]] u32 ascii_case_insensitive_hash() const;
 
     template<Arithmetic T>
-    static ErrorOr<String> number(T value)
+    [[nodiscard]] static String number(T value)
     {
-        return formatted("{}", value);
+        return MUST(formatted("{}", value));
     }
 
     template<Arithmetic T>

Meta/Lagom/Tools/CodeGenerators/LibTextCodec/GenerateEncodingIndexes.cpp

@@ -71,8 +71,8 @@ void generate_table(SourceGenerator generator, StringView name, LookupTable& tab
 {
     generator.set("name", name);
     generator.set("value_type", table.max_code_point > NumericLimits<u16>::max() ? "u32" : "u16");
-    generator.set("first_pointer", MUST(String::number(table.first_pointer)));
-    generator.set("size", MUST(String::number(table.code_points.size())));
+    generator.set("first_pointer", String::number(table.first_pointer));
+    generator.set("size", String::number(table.code_points.size()));
 
     if (table.first_pointer > 0) {
         generator.appendln("static constexpr u32 s_@name@_index_first_pointer = @first_pointer@;");
@@ -96,7 +96,7 @@ ErrorOr<void> generate_header_file(LookupTables& tables, Core::File& file)
     StringBuilder builder;
     SourceGenerator generator { builder };
 
-    generator.set("gb18030_ranges_size", MUST(String::number(tables.gb18030_ranges.size())));
+    generator.set("gb18030_ranges_size", String::number(tables.gb18030_ranges.size()));
 
     generator.append(R"~~~(
 #pragma once
@@ -133,8 +133,8 @@ static constexpr Array<Gb18030RangeEntry, @gb18030_ranges_size@> s_gb18030_range
 void generate_table_accessor(SourceGenerator generator, StringView name, LookupTable& table)
 {
     generator.set("name", name);
-    generator.set("first_pointer", MUST(String::number(table.first_pointer)));
-    generator.set("size", MUST(String::number(table.code_points.size())));
+    generator.set("first_pointer", String::number(table.first_pointer));
+    generator.set("size", String::number(table.code_points.size()));
 
     if (table.first_pointer > 0) {
         generator.append(R"~~~(
@@ -166,8 +166,8 @@ Optional<u32> index_@name@_code_point(u32 pointer)
 void generate_inverse_table_accessor(SourceGenerator generator, StringView name, LookupTable& table)
 {
     generator.set("name", name);
-    generator.set("first_pointer", MUST(String::number(table.first_pointer)));
-    generator.set("size", MUST(String::number(table.code_points.size())));
+    generator.set("first_pointer", String::number(table.first_pointer));
+    generator.set("size", String::number(table.code_points.size()));
 
     // FIXME - Doing a linear search here is really slow, should be generating
     //         some kind of reverse lookup table.

Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp

@@ -3762,7 +3762,7 @@ JS_DEFINE_NATIVE_FUNCTION(@class_name@::@attribute.setter_callback@)
 )~~~");
                 } else if (attribute.type->is_integer() && !attribute.type->is_nullable()) {
                     attribute_generator.append(R"~~~(
-    MUST(impl->set_attribute(HTML::AttributeNames::@attribute.reflect_name@, MUST(String::number(cpp_value))));
+    MUST(impl->set_attribute(HTML::AttributeNames::@attribute.reflect_name@, String::number(cpp_value)));
 )~~~");
                 } else if (attribute.type->is_nullable()) {
                     attribute_generator.append(R"~~~(

Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateAriaRoles.cpp

@@ -103,7 +103,7 @@ void generate_hash_table_member(SourceGenerator& generator, StringView member_na
     member_generator.set("member_name"sv, member_name);
     member_generator.set("hash_table_name"sv, hash_table_name);
     member_generator.set("enum_class"sv, enum_class);
-    member_generator.set("hash_table_size"sv, MUST(String::number(values.size())));
+    member_generator.set("hash_table_size"sv, String::number(values.size()));
 
     if (values.size() == 0) {
         member_generator.append(R"~~~(

Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSMathFunctions.cpp

@@ -188,8 +188,8 @@ OwnPtr<CalculationNode> Parser::parse_math_function(PropertyID property_id, Func
                 if (parameter.get_bool("required"sv) == true)
                     min_argument_count++;
             });
-            function_generator.set("min_argument_count", MUST(String::number(min_argument_count)));
-            function_generator.set("max_argument_count", MUST(String::number(max_argument_count)));
+            function_generator.set("min_argument_count", String::number(min_argument_count));
+            function_generator.set("max_argument_count", String::number(max_argument_count));
 
             function_generator.append(R"~~~(
         if (arguments.size() < @min_argument_count@ || arguments.size() > @max_argument_count@) {
@@ -209,7 +209,7 @@ OwnPtr<CalculationNode> Parser::parse_math_function(PropertyID property_id, Func
 
                 auto parameter_generator = function_generator.fork();
                 parameter_generator.set("parameter_name", parameter.get_byte_string("name"sv).value());
-                parameter_generator.set("parameter_index", MUST(String::number(parameter_index)));
+                parameter_generator.set("parameter_index", String::number(parameter_index));
 
                 bool parameter_is_calculation;
                 if (parameter_type_string == "<rounding-strategy>") {
@@ -319,7 +319,7 @@ OwnPtr<CalculationNode> Parser::parse_math_function(PropertyID property_id, Func
                 auto parameter_type_string = parameter.get_byte_string("type"sv).value();
 
                 auto parameter_generator = function_generator.fork();
-                parameter_generator.set("parameter_index"sv, MUST(String::number(parameter_index)));
+                parameter_generator.set("parameter_index"sv, String::number(parameter_index));
 
                 if (parameter_type_string == "<rounding-strategy>"sv) {
                     parameter_generator.set("release_value"sv, ""_string);

Tests/AK/TestJSON.cpp

@@ -134,11 +134,11 @@ TEST_CASE(json_64_bit_value_coerced_to_32_bit)
         auto min = NumericLimits<i64>::min();
         auto max = NumericLimits<i64>::max();
 
-        auto json = TRY_OR_FAIL(JsonValue::from_string(MUST(String::number(min))));
+        auto json = TRY_OR_FAIL(JsonValue::from_string(String::number(min)));
         EXPECT_EQ(json.get_integer<i64>(), min);
         EXPECT(!json.is_integer<i32>());
 
-        json = TRY_OR_FAIL(JsonValue::from_string(MUST(String::number(max))));
+        json = TRY_OR_FAIL(JsonValue::from_string(String::number(max)));
         EXPECT_EQ(json.get_integer<i64>(), max);
         EXPECT(!json.is_integer<i32>());
     }
@@ -146,11 +146,11 @@ TEST_CASE(json_64_bit_value_coerced_to_32_bit)
         auto min = NumericLimits<u64>::min();
         auto max = NumericLimits<u64>::max();
 
-        auto json = TRY_OR_FAIL(JsonValue::from_string(MUST(String::number(min))));
+        auto json = TRY_OR_FAIL(JsonValue::from_string(String::number(min)));
         EXPECT_EQ(json.get_integer<u64>(), min);
         EXPECT_EQ(json.get_integer<u32>(), min);
 
-        json = TRY_OR_FAIL(JsonValue::from_string(MUST(String::number(max))));
+        json = TRY_OR_FAIL(JsonValue::from_string(String::number(max)));
         EXPECT_EQ(json.get_integer<u64>(), max);
         EXPECT(!json.is_integer<u32>());
     }

Userland/Libraries/LibJS/Bytecode/Generator.h

@@ -171,7 +171,7 @@ public:
     BasicBlock& make_block(String name = {})
     {
         if (name.is_empty())
-            name = MUST(String::number(m_next_block++));
+            name = String::number(m_next_block++);
         auto block = BasicBlock::create(m_root_basic_blocks.size(), name);
         if (auto const* context = m_current_unwind_context) {
             if (context->handler().has_value())

Userland/Libraries/LibJS/Bytecode/Interpreter.cpp

@@ -1720,7 +1720,7 @@ inline ThrowCompletionOr<Object*> get_object_property_iterator(VM& vm, Value val
                 result_object->define_direct_property(vm.names.done, JS::Value(false), default_attributes);
 
                 if (key.is_number())
-                    result_object->define_direct_property(vm.names.value, PrimitiveString::create(vm, TRY_OR_THROW_OOM(vm, String::number(key.as_number()))), default_attributes);
+                    result_object->define_direct_property(vm.names.value, PrimitiveString::create(vm, String::number(key.as_number())), default_attributes);
                 else if (key.is_string())
                     result_object->define_direct_property(vm.names.value, PrimitiveString::create(vm, key.as_string()), default_attributes);
                 else

Userland/Libraries/LibJS/MarkupGenerator.cpp

@@ -113,7 +113,7 @@ ErrorOr<void> MarkupGenerator::object_to_html(Object const& object, StringBuilde
         if (!first)
             TRY(html_output.try_append(TRY(wrap_string_in_style(", "sv, StyleType::Punctuation))));
         first = false;
-        TRY(html_output.try_append(TRY(wrap_string_in_style(TRY(String::number(entry.index())), StyleType::Number))));
+        TRY(html_output.try_append(TRY(wrap_string_in_style(String::number(entry.index()), StyleType::Number))));
         TRY(html_output.try_append(TRY(wrap_string_in_style(": "sv, StyleType::Punctuation))));
         // FIXME: Exception check
         TRY(value_to_html(object.get(entry.index()).release_value(), html_output, seen_objects));

Userland/Libraries/LibJS/Runtime/StringObject.cpp

@@ -152,14 +152,14 @@ ThrowCompletionOr<MarkedVector<Value>> StringObject::internal_own_property_keys(
     // 5. For each integer i starting with 0 such that i < len, in ascending order, do
     for (size_t i = 0; i < length; ++i) {
         // a. Add ! ToString(𝔽(i)) as the last element of keys.
-        keys.append(PrimitiveString::create(vm, MUST(String::number(i))));
+        keys.append(PrimitiveString::create(vm, String::number(i)));
     }
 
     // 6. For each own property key P of O such that P is an array index and ! ToIntegerOrInfinity(P) ≥ len, in ascending numeric index order, do
     for (auto& entry : indexed_properties()) {
         if (entry.index() >= length) {
             // a. Add P as the last element of keys.
-            keys.append(PrimitiveString::create(vm, MUST(String::number(entry.index()))));
+            keys.append(PrimitiveString::create(vm, String::number(entry.index())));
         }
     }
 

Userland/Libraries/LibJS/Runtime/TypedArray.h

@@ -425,7 +425,7 @@ public:
             // b. For each integer i such that 0 ≤ i < length, in ascending order, do
             for (size_t i = 0; i < length; ++i) {
                 // i. Append ! ToString(𝔽(i)) to keys.
-                keys.append(PrimitiveString::create(vm, MUST(String::number(i))));
+                keys.append(PrimitiveString::create(vm, String::number(i)));
             }
         }
 

Userland/Libraries/LibJS/Runtime/Value.cpp

@@ -367,7 +367,7 @@ String Value::to_string_without_side_effects() const
     case BOOLEAN_TAG:
         return as_bool() ? "true"_string : "false"_string;
     case INT32_TAG:
-        return String::number(as_i32()).release_value();
+        return String::number(as_i32());
     case STRING_TAG:
         return as_string().utf8_string();
     case SYMBOL_TAG:
@@ -418,7 +418,7 @@ ThrowCompletionOr<String> Value::to_string(VM& vm) const
         return as_bool() ? "true"_string : "false"_string;
     // 7. If argument is a Number, return Number::toString(argument, 10).
     case INT32_TAG:
-        return TRY_OR_THROW_OOM(vm, String::number(as_i32()));
+        return String::number(as_i32());
     // 8. If argument is a BigInt, return BigInt::toString(argument, 10).
     case BIGINT_TAG:
         return TRY_OR_THROW_OOM(vm, as_bigint().big_integer().to_base(10));

Userland/Libraries/LibWeb/Bindings/PlatformObject.cpp

@@ -405,7 +405,7 @@ JS::ThrowCompletionOr<JS::MarkedVector<JS::Value>> PlatformObject::internal_own_
     if (m_legacy_platform_object_flags->supports_indexed_properties) {
         for (u64 index = 0; index <= NumericLimits<u32>::max(); ++index) {
             if (is_supported_property_index(index))
-                keys.append(JS::PrimitiveString::create(vm, MUST(String::number(index))));
+                keys.append(JS::PrimitiveString::create(vm, String::number(index)));
             else
                 break;
         }

Userland/Libraries/LibWeb/CSS/MediaQuery.cpp

@@ -29,7 +29,7 @@ String MediaFeatureValue::to_string() const
         [](Length const& length) { return length.to_string(); },
         [](Ratio const& ratio) { return ratio.to_string(); },
         [](Resolution const& resolution) { return resolution.to_string(); },
-        [](float number) { return MUST(String::number(number)); });
+        [](float number) { return String::number(number); });
 }
 
 bool MediaFeatureValue::is_same_type(MediaFeatureValue const& other) const

Userland/Libraries/LibWeb/CSS/Number.h

@@ -74,7 +74,7 @@ public:
     {
         if (m_type == Type::IntegerWithExplicitSign)
             return MUST(String::formatted("{:+}", m_value));
-        return MUST(String::number(m_value));
+        return String::number(m_value);
     }
 
     bool operator==(Number const& other) const

Userland/Libraries/LibWeb/CSS/Parser/Token.cpp

@@ -43,7 +43,7 @@ String Token::to_string() const
     case Type::Delim:
         return String { m_value };
     case Type::Number:
-        return MUST(String::number(m_number_value.value()));
+        return String::number(m_number_value.value());
     case Type::Percentage:
         return MUST(String::formatted("{}%", m_number_value.value()));
     case Type::Dimension:

Userland/Libraries/LibWeb/CSS/Selector.h

@@ -102,7 +102,7 @@ public:
             {
                 // 1. If A is zero, return the serialization of B.
                 if (step_size == 0) {
-                    return MUST(String::number(offset));
+                    return String::number(offset);
                 }
 
                 // 2. Otherwise, let result initially be an empty string.

Userland/Libraries/LibWeb/CSS/StyleValues/IntegerStyleValue.cpp

@@ -10,7 +10,7 @@ namespace Web::CSS {
 
 String IntegerStyleValue::to_string() const
 {
-    return MUST(String::number(m_value));
+    return String::number(m_value);
 }
 
 }

Userland/Libraries/LibWeb/CSS/StyleValues/NumberStyleValue.cpp

@@ -13,7 +13,7 @@ namespace Web::CSS {
 
 String NumberStyleValue::to_string() const
 {
-    return MUST(String::number(m_value));
+    return String::number(m_value);
 }
 
 }

Userland/Libraries/LibWeb/CSS/StyleValues/TransformationStyleValue.cpp

@@ -30,7 +30,7 @@ String TransformationStyleValue::to_string() const
                 || m_properties.transform_function == CSS::TransformFunction::ScaleY
                 || m_properties.transform_function == CSS::TransformFunction::ScaleZ)
             && value->is_percentage()) {
-            builder.append(MUST(String::number(value->as_percentage().percentage().as_fraction())));
+            builder.append(String::number(value->as_percentage().percentage().as_fraction()));
         } else {
             builder.append(value->to_string());
         }

Userland/Libraries/LibWeb/DOM/Element.cpp

@@ -1208,7 +1208,7 @@ i32 Element::tab_index() const
 // https://html.spec.whatwg.org/multipage/interaction.html#dom-tabindex
 void Element::set_tab_index(i32 tab_index)
 {
-    MUST(set_attribute(HTML::AttributeNames::tabindex, MUST(String::number(tab_index))));
+    MUST(set_attribute(HTML::AttributeNames::tabindex, String::number(tab_index)));
 }
 
 // https://drafts.csswg.org/cssom-view/#potentially-scrollable

Userland/Libraries/LibWeb/Fetch/Fetching/Fetching.cpp

@@ -836,7 +836,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<PendingResponse>> scheme_fetch(JS::Realm& r
         auto full_length = blob->size();
 
         // 6. Let serializedFullLength be fullLength, serialized and isomorphic encoded.
-        auto serialized_full_length = TRY_OR_THROW_OOM(vm, String::number(full_length));
+        auto serialized_full_length = String::number(full_length);
 
         // 7. Let type be blob’s type.
         auto const& type = blob->type();
@@ -1627,7 +1627,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<PendingResponse>> http_network_or_cache_fet
         // 8. If contentLength is non-null, then set contentLengthHeaderValue to contentLength, serialized and
         //    isomorphic encoded.
         if (content_length.has_value())
-            content_length_header_value = MUST(ByteBuffer::copy(TRY_OR_THROW_OOM(vm, String::number(*content_length)).bytes()));
+            content_length_header_value = MUST(ByteBuffer::copy(String::number(*content_length).bytes()));
 
         // 9. If contentLengthHeaderValue is non-null, then append (`Content-Length`, contentLengthHeaderValue) to
         //    httpRequest’s header list.

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.cpp

@@ -272,14 +272,14 @@ void Request::add_range_header(u64 first, Optional<u64> const& last)
     auto range_value = MUST(ByteBuffer::copy("bytes"sv.bytes()));
 
     // 3. Serialize and isomorphic encode first, and append the result to rangeValue.
-    range_value.append(MUST(String::number(first)).bytes());
+    range_value.append(String::number(first).bytes());
 
     // 4. Append 0x2D (-) to rangeValue.
     range_value.append('-');
 
     // 5. If last is given, then serialize and isomorphic encode it, and append the result to rangeValue.
     if (last.has_value())
-        range_value.append(MUST(String::number(*last)).bytes());
+        range_value.append(String::number(*last).bytes());
 
     // 6. Append (`Range`, rangeValue) to request’s header list.
     auto header = Header {

Userland/Libraries/LibWeb/HTML/AudioTrack.cpp

@@ -57,7 +57,7 @@ void AudioTrack::initialize(JS::Realm& realm)
     WEB_SET_PROTOTYPE_FOR_INTERFACE(AudioTrack);
 
     auto id = s_audio_track_id_allocator.allocate();
-    m_id = MUST(String::number(id));
+    m_id = String::number(id);
 }
 
 void AudioTrack::play(Badge<HTMLAudioElement>)

Userland/Libraries/LibWeb/HTML/FormControlInfrastructure.cpp

@@ -121,10 +121,10 @@ WebIDL::ExceptionOr<Optional<Vector<XHR::FormDataEntry>>> construct_entry_list(J
             auto [x, y] = input_element->selected_coordinate();
 
             // 6. Create an entry with namex and x, and append it to entry list.
-            entry_list.append(XHR::FormDataEntry { .name = move(name_x), .value = MUST(String::number(x)) });
+            entry_list.append(XHR::FormDataEntry { .name = move(name_x), .value = String::number(x) });
 
             // 7. Create an entry with namey and y, and append it to entry list.
-            entry_list.append(XHR::FormDataEntry { .name = move(name_y), .value = MUST(String::number(y)) });
+            entry_list.append(XHR::FormDataEntry { .name = move(name_y), .value = String::number(y) });
 
             // 8. Continue.
             continue;

Userland/Libraries/LibWeb/HTML/HTMLCanvasElement.cpp

@@ -114,7 +114,7 @@ void HTMLCanvasElement::reset_context_to_default_state()
 
 WebIDL::ExceptionOr<void> HTMLCanvasElement::set_width(unsigned value)
 {
-    TRY(set_attribute(HTML::AttributeNames::width, MUST(String::number(value))));
+    TRY(set_attribute(HTML::AttributeNames::width, String::number(value)));
     m_bitmap = nullptr;
     reset_context_to_default_state();
     return {};
@@ -122,7 +122,7 @@ WebIDL::ExceptionOr<void> HTMLCanvasElement::set_width(unsigned value)
 
 WebIDL::ExceptionOr<void> HTMLCanvasElement::set_height(unsigned value)
 {
-    TRY(set_attribute(HTML::AttributeNames::height, MUST(String::number(value))));
+    TRY(set_attribute(HTML::AttributeNames::height, String::number(value)));
     m_bitmap = nullptr;
     reset_context_to_default_state();
     return {};

Userland/Libraries/LibWeb/HTML/HTMLHyperlinkElementUtils.cpp

@@ -244,7 +244,7 @@ String HTMLHyperlinkElementUtils::port() const
         return String {};
 
     // 4. Return url's port, serialized.
-    return MUST(String::number(url->port().value()));
+    return String::number(url->port().value());
 }
 
 // https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-port

Userland/Libraries/LibWeb/HTML/HTMLImageElement.cpp

@@ -191,7 +191,7 @@ unsigned HTMLImageElement::width() const
 
 WebIDL::ExceptionOr<void> HTMLImageElement::set_width(unsigned width)
 {
-    return set_attribute(HTML::AttributeNames::width, MUST(String::number(width)));
+    return set_attribute(HTML::AttributeNames::width, String::number(width));
 }
 
 // https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-height
@@ -220,7 +220,7 @@ unsigned HTMLImageElement::height() const
 
 WebIDL::ExceptionOr<void> HTMLImageElement::set_height(unsigned height)
 {
-    return set_attribute(HTML::AttributeNames::height, MUST(String::number(height)));
+    return set_attribute(HTML::AttributeNames::height, String::number(height));
 }
 
 // https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-naturalwidth

Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp

@@ -1866,7 +1866,7 @@ unsigned HTMLInputElement::size() const
 
 WebIDL::ExceptionOr<void> HTMLInputElement::set_size(unsigned value)
 {
-    return set_attribute(HTML::AttributeNames::size, MUST(String::number(value)));
+    return set_attribute(HTML::AttributeNames::size, String::number(value));
 }
 
 // https://html.spec.whatwg.org/multipage/input.html#concept-input-value-string-number
@@ -1889,11 +1889,11 @@ String HTMLInputElement::convert_number_to_string(double input) const
 {
     // https://html.spec.whatwg.org/multipage/input.html#number-state-(type=number):concept-input-value-number-string
     if (type_state() == TypeAttributeState::Number)
-        return MUST(String::number(input));
+        return String::number(input);
 
     // https://html.spec.whatwg.org/multipage/input.html#range-state-(type=range):concept-input-value-number-string
     if (type_state() == TypeAttributeState::Range)
-        return MUST(String::number(input));
+        return String::number(input);
 
     dbgln("HTMLInputElement::convert_number_to_string() not implemented for input type {}", type());
     return {};

Userland/Libraries/LibWeb/HTML/HTMLLIElement.h

@@ -24,7 +24,7 @@ public:
     i32 value() { return get_attribute(AttributeNames::value).value_or("0"_string).to_number<i32>().value_or(0); }
     void set_value(i32 value)
     {
-        set_attribute(AttributeNames::value, MUST(String::number(value))).release_value_but_fixme_should_propagate_errors();
+        set_attribute(AttributeNames::value, String::number(value)).release_value_but_fixme_should_propagate_errors();
     }
 
 private:

Userland/Libraries/LibWeb/HTML/HTMLMarqueeElement.cpp

@@ -76,7 +76,7 @@ WebIDL::UnsignedLong HTMLMarqueeElement::scroll_amount()
 // https://html.spec.whatwg.org/multipage/obsolete.html#dom-marquee-scrollamount
 WebIDL::ExceptionOr<void> HTMLMarqueeElement::set_scroll_amount(WebIDL::UnsignedLong value)
 {
-    return set_attribute(HTML::AttributeNames::scrollamount, MUST(String::number(value)));
+    return set_attribute(HTML::AttributeNames::scrollamount, String::number(value));
 }
 
 // https://html.spec.whatwg.org/multipage/obsolete.html#dom-marquee-scrolldelay
@@ -93,7 +93,7 @@ WebIDL::UnsignedLong HTMLMarqueeElement::scroll_delay()
 // https://html.spec.whatwg.org/multipage/obsolete.html#dom-marquee-scrolldelay
 WebIDL::ExceptionOr<void> HTMLMarqueeElement::set_scroll_delay(WebIDL::UnsignedLong value)
 {
-    return set_attribute(HTML::AttributeNames::scrolldelay, MUST(String::number(value)));
+    return set_attribute(HTML::AttributeNames::scrolldelay, String::number(value));
 }
 
 }

Userland/Libraries/LibWeb/HTML/HTMLMeterElement.cpp

@@ -54,7 +54,7 @@ double HTMLMeterElement::value() const
 
 WebIDL::ExceptionOr<void> HTMLMeterElement::set_value(double value)
 {
-    TRY(set_attribute(HTML::AttributeNames::value, MUST(String::number(value))));
+    TRY(set_attribute(HTML::AttributeNames::value, String::number(value)));
     update_meter_value_element();
     return {};
 }
@@ -72,7 +72,7 @@ double HTMLMeterElement::min() const
 
 WebIDL::ExceptionOr<void> HTMLMeterElement::set_min(double value)
 {
-    TRY(set_attribute(HTML::AttributeNames::min, MUST(String::number(value))));
+    TRY(set_attribute(HTML::AttributeNames::min, String::number(value)));
     update_meter_value_element();
     return {};
 }
@@ -93,7 +93,7 @@ double HTMLMeterElement::max() const
 
 WebIDL::ExceptionOr<void> HTMLMeterElement::set_max(double value)
 {
-    TRY(set_attribute(HTML::AttributeNames::max, MUST(String::number(value))));
+    TRY(set_attribute(HTML::AttributeNames::max, String::number(value)));
     update_meter_value_element();
     return {};
 }
@@ -116,7 +116,7 @@ double HTMLMeterElement::low() const
 
 WebIDL::ExceptionOr<void> HTMLMeterElement::set_low(double value)
 {
-    TRY(set_attribute(HTML::AttributeNames::low, MUST(String::number(value))));
+    TRY(set_attribute(HTML::AttributeNames::low, String::number(value)));
     update_meter_value_element();
     return {};
 }
@@ -139,7 +139,7 @@ double HTMLMeterElement::high() const
 
 WebIDL::ExceptionOr<void> HTMLMeterElement::set_high(double value)
 {
-    TRY(set_attribute(HTML::AttributeNames::high, MUST(String::number(value))));
+    TRY(set_attribute(HTML::AttributeNames::high, String::number(value)));
     update_meter_value_element();
     return {};
 }
@@ -162,7 +162,7 @@ double HTMLMeterElement::optimum() const
 
 WebIDL::ExceptionOr<void> HTMLMeterElement::set_optimum(double value)
 {
-    TRY(set_attribute(HTML::AttributeNames::optimum, MUST(String::number(value))));
+    TRY(set_attribute(HTML::AttributeNames::optimum, String::number(value)));
     update_meter_value_element();
     return {};
 }

Userland/Libraries/LibWeb/HTML/HTMLOListElement.h

@@ -24,7 +24,7 @@ public:
     i32 start() { return get_attribute(AttributeNames::start).value_or("1"_string).to_number<i32>().value_or(1); }
     void set_start(i32 start)
     {
-        set_attribute(AttributeNames::start, MUST(String::number(start))).release_value_but_fixme_should_propagate_errors();
+        set_attribute(AttributeNames::start, String::number(start)).release_value_but_fixme_should_propagate_errors();
     }
 
 private:

Userland/Libraries/LibWeb/HTML/HTMLProgressElement.cpp

@@ -54,7 +54,7 @@ WebIDL::ExceptionOr<void> HTMLProgressElement::set_value(double value)
     if (value < 0)
         value = 0;
 
-    TRY(set_attribute(HTML::AttributeNames::value, MUST(String::number(value))));
+    TRY(set_attribute(HTML::AttributeNames::value, String::number(value)));
     update_progress_value_element();
     return {};
 }
@@ -75,7 +75,7 @@ WebIDL::ExceptionOr<void> HTMLProgressElement::set_max(double value)
     if (value <= 0)
         value = 1;
 
-    TRY(set_attribute(HTML::AttributeNames::max, MUST(String::number(value))));
+    TRY(set_attribute(HTML::AttributeNames::max, String::number(value)));
     update_progress_value_element();
     return {};
 }

Userland/Libraries/LibWeb/HTML/HTMLSelectElement.cpp

@@ -92,7 +92,7 @@ WebIDL::UnsignedLong HTMLSelectElement::size() const
 
 WebIDL::ExceptionOr<void> HTMLSelectElement::set_size(WebIDL::UnsignedLong size)
 {
-    return set_attribute(HTML::AttributeNames::size, MUST(String::number(size)));
+    return set_attribute(HTML::AttributeNames::size, String::number(size));
 }
 
 // https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-options

Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.cpp

@@ -129,7 +129,7 @@ unsigned int HTMLTableCellElement::col_span() const
 
 WebIDL::ExceptionOr<void> HTMLTableCellElement::set_col_span(unsigned int value)
 {
-    return set_attribute(HTML::AttributeNames::colspan, MUST(String::number(value)));
+    return set_attribute(HTML::AttributeNames::colspan, String::number(value));
 }
 
 // This implements step 9 in the spec here:
@@ -149,7 +149,7 @@ unsigned int HTMLTableCellElement::row_span() const
 
 WebIDL::ExceptionOr<void> HTMLTableCellElement::set_row_span(unsigned int value)
 {
-    return set_attribute(HTML::AttributeNames::rowspan, MUST(String::number(value)));
+    return set_attribute(HTML::AttributeNames::rowspan, String::number(value));
 }
 
 // https://html.spec.whatwg.org/multipage/tables.html#dom-tdth-cellindex

Userland/Libraries/LibWeb/HTML/HTMLTableColElement.cpp

@@ -41,7 +41,7 @@ unsigned int HTMLTableColElement::span() const
 
 WebIDL::ExceptionOr<void> HTMLTableColElement::set_span(unsigned int value)
 {
-    return set_attribute(HTML::AttributeNames::span, MUST(String::number(value)));
+    return set_attribute(HTML::AttributeNames::span, String::number(value));
 }
 
 void HTMLTableColElement::apply_presentational_hints(CSS::StyleProperties& style) const

Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.cpp

@@ -299,7 +299,7 @@ unsigned HTMLTextAreaElement::cols() const
 
 WebIDL::ExceptionOr<void> HTMLTextAreaElement::set_cols(unsigned cols)
 {
-    return set_attribute(HTML::AttributeNames::cols, MUST(String::number(cols)));
+    return set_attribute(HTML::AttributeNames::cols, String::number(cols));
 }
 
 // https://html.spec.whatwg.org/multipage/form-elements.html#dom-textarea-rows
@@ -315,7 +315,7 @@ unsigned HTMLTextAreaElement::rows() const
 
 WebIDL::ExceptionOr<void> HTMLTextAreaElement::set_rows(unsigned rows)
 {
-    return set_attribute(HTML::AttributeNames::rows, MUST(String::number(rows)));
+    return set_attribute(HTML::AttributeNames::rows, String::number(rows));
 }
 
 WebIDL::UnsignedLong HTMLTextAreaElement::selection_start_binding() const

Userland/Libraries/LibWeb/HTML/Location.cpp

@@ -251,8 +251,6 @@ WebIDL::ExceptionOr<void> Location::set_hostname(String const&)
 // https://html.spec.whatwg.org/multipage/history.html#dom-location-port
 WebIDL::ExceptionOr<String> Location::port() const
 {
-    auto& vm = this->vm();
-
     // 1. If this's relevant Document is non-null and its origin is not same origin-domain with the entry settings object's origin, then throw a "SecurityError" DOMException.
     auto const relevant_document = this->relevant_document();
     if (relevant_document && !relevant_document->origin().is_same_origin_domain(entry_settings_object().origin()))
@@ -265,7 +263,7 @@ WebIDL::ExceptionOr<String> Location::port() const
         return String {};
 
     // 3. Return this's url's port, serialized.
-    return TRY_OR_THROW_OOM(vm, String::number(*url.port()));
+    return String::number(*url.port());
 }
 
 WebIDL::ExceptionOr<void> Location::set_port(String const&)

Userland/Libraries/LibWeb/HTML/Navigable.cpp

@@ -167,7 +167,7 @@ JS::GCPtr<Navigable> Navigable::navigable_with_active_document(JS::NonnullGCPtr<
 ErrorOr<void> Navigable::initialize_navigable(JS::NonnullGCPtr<DocumentState> document_state, JS::GCPtr<Navigable> parent)
 {
     static int next_id = 0;
-    m_id = TRY(String::number(next_id++));
+    m_id = String::number(next_id++);
 
     // 1. Assert: documentState's document is non-null.
     VERIFY(document_state->document());

Userland/Libraries/LibWeb/HTML/Numbers.cpp

@@ -129,7 +129,7 @@ WebIDL::ExceptionOr<String> convert_non_negative_integer_to_string(JS::Realm& re
 {
     if (value < 0)
         return WebIDL::IndexSizeError::create(realm, "The attribute is limited to only non-negative numbers"_string);
-    return MUST(String::number(value));
+    return String::number(value);
 }
 
 }

Userland/Libraries/LibWeb/HTML/Scripting/WindowEnvironmentSettingsObject.cpp

@@ -60,7 +60,7 @@ void WindowEnvironmentSettingsObject::setup(Page& page, URL::URL const& creation
         //        settings object's target browsing context to null,
         //        and settings object's active service worker to null.
         static i64 next_id = 1;
-        settings_object->id = MUST(String::number(next_id++));
+        settings_object->id = String::number(next_id++);
         settings_object->target_browsing_context = nullptr;
     }
 

Userland/Libraries/LibWeb/HTML/VideoTrack.cpp

@@ -78,7 +78,7 @@ void VideoTrack::initialize(JS::Realm& realm)
     WEB_SET_PROTOTYPE_FOR_INTERFACE(VideoTrack);
 
     auto id = s_video_track_id_allocator.allocate();
-    m_id = MUST(String::number(id));
+    m_id = String::number(id);
 }
 
 void VideoTrack::visit_edges(Cell::Visitor& visitor)

Userland/Libraries/LibWeb/HTML/WorkerLocation.cpp

@@ -78,8 +78,6 @@ WebIDL::ExceptionOr<String> WorkerLocation::hostname() const
 // https://html.spec.whatwg.org/multipage/workers.html#dom-workerlocation-port
 WebIDL::ExceptionOr<String> WorkerLocation::port() const
 {
-    auto& vm = realm().vm();
-
     // The port getter steps are:
     // 1. Let port be this's WorkerGlobalScope object's url's port.
     auto const& port = m_global_scope->url().port();
@@ -88,7 +86,7 @@ WebIDL::ExceptionOr<String> WorkerLocation::port() const
     if (!port.has_value())
         return String {};
     // 3. Return port, serialized.
-    return TRY_OR_THROW_OOM(vm, String::number(port.value()));
+    return String::number(port.value());
 }
 
 // https://html.spec.whatwg.org/multipage/workers.html#dom-workerlocation-pathname

Userland/Libraries/LibWebView/InspectorClient.cpp

@@ -40,7 +40,7 @@ static String style_sheet_identifier_to_json(Web::CSS::StyleSheetIdentifier cons
 {
     return MUST(String::formatted("{{ type: '{}', domNodeId: {}, url: '{}' }}"sv,
         Web::CSS::style_sheet_identifier_type_to_string(identifier.type),
-        identifier.dom_element_unique_id.map([](auto& it) { return MUST(String::number(it)); }).value_or("undefined"_string),
+        identifier.dom_element_unique_id.map([](auto& it) { return String::number(it); }).value_or("undefined"_string),
         identifier.url.value_or("undefined"_string)));
 }
 

Userland/Libraries/LibWebView/ProcessManager.cpp

@@ -183,7 +183,7 @@ String ProcessManager::generate_html()
             builder.appendff(" - {}", escape_html_entities(*process_handle.title()));
         builder.append("</td>"sv);
         builder.append("<td>"sv);
-        builder.append(MUST(String::number(process.pid)));
+        builder.append(String::number(process.pid));
         builder.append("</td>"sv);
         builder.append("<td>"sv);
         builder.append(human_readable_size(process.memory_usage_bytes));