diff --git a/Userland/Libraries/LibJS/Heap/Cell.h b/Userland/Libraries/LibJS/Heap/Cell.h
index 764104d84c8..f2229c9e6ef 100644
--- a/Userland/Libraries/LibJS/Heap/Cell.h
+++ b/Userland/Libraries/LibJS/Heap/Cell.h
@@ -9,8 +9,6 @@
 #include <AK/Format.h>
 #include <AK/Forward.h>
 #include <AK/Noncopyable.h>
-#include <AK/String.h>
-#include <AK/TypeCasts.h>
 #include <LibJS/Forward.h>
 
 namespace JS {
diff --git a/Userland/Libraries/LibJS/MarkupGenerator.cpp b/Userland/Libraries/LibJS/MarkupGenerator.cpp
index 91c9b05cd8e..e4859eb3277 100644
--- a/Userland/Libraries/LibJS/MarkupGenerator.cpp
+++ b/Userland/Libraries/LibJS/MarkupGenerator.cpp
@@ -6,6 +6,7 @@
 
 #include <AK/HashTable.h>
 #include <AK/StringBuilder.h>
+#include <AK/TypeCasts.h>
 #include <LibJS/Lexer.h>
 #include <LibJS/MarkupGenerator.h>
 #include <LibJS/Runtime/Array.h>
diff --git a/Userland/Libraries/LibJS/Runtime/BigIntPrototype.cpp b/Userland/Libraries/LibJS/Runtime/BigIntPrototype.cpp
index 46556f6bb7f..5928ba93f13 100644
--- a/Userland/Libraries/LibJS/Runtime/BigIntPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/BigIntPrototype.cpp
@@ -5,6 +5,7 @@
  */
 
 #include <AK/Function.h>
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/BigIntObject.h>
 #include <LibJS/Runtime/BigIntPrototype.h>
 #include <LibJS/Runtime/Error.h>
diff --git a/Userland/Libraries/LibJS/Runtime/BooleanPrototype.cpp b/Userland/Libraries/LibJS/Runtime/BooleanPrototype.cpp
index ee87423a75c..14fcb207ffc 100644
--- a/Userland/Libraries/LibJS/Runtime/BooleanPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/BooleanPrototype.cpp
@@ -5,6 +5,7 @@
  */
 
 #include <AK/Function.h>
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/BooleanPrototype.h>
 #include <LibJS/Runtime/Error.h>
 #include <LibJS/Runtime/GlobalObject.h>
diff --git a/Userland/Libraries/LibJS/Runtime/DataViewPrototype.cpp b/Userland/Libraries/LibJS/Runtime/DataViewPrototype.cpp
index 8a5cc4313de..3aff1219951 100644
--- a/Userland/Libraries/LibJS/Runtime/DataViewPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/DataViewPrototype.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/DataViewPrototype.h>
 
 namespace JS {
diff --git a/Userland/Libraries/LibJS/Runtime/DatePrototype.cpp b/Userland/Libraries/LibJS/Runtime/DatePrototype.cpp
index ffe3b0e22f2..40ac2789de9 100644
--- a/Userland/Libraries/LibJS/Runtime/DatePrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/DatePrototype.cpp
@@ -8,6 +8,7 @@
 
 #include <AK/Function.h>
 #include <AK/String.h>
+#include <AK/TypeCasts.h>
 #include <LibCore/DateTime.h>
 #include <LibCrypto/BigInt/UnsignedBigInteger.h>
 #include <LibJS/Runtime/BigInt.h>
diff --git a/Userland/Libraries/LibJS/Runtime/FinalizationRegistryPrototype.cpp b/Userland/Libraries/LibJS/Runtime/FinalizationRegistryPrototype.cpp
index 494c2cf1c4c..e9a81b2a92d 100644
--- a/Userland/Libraries/LibJS/Runtime/FinalizationRegistryPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/FinalizationRegistryPrototype.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/FinalizationRegistryPrototype.h>
 
 namespace JS {
diff --git a/Userland/Libraries/LibJS/Runtime/MapIteratorPrototype.cpp b/Userland/Libraries/LibJS/Runtime/MapIteratorPrototype.cpp
index a446f587b26..1886181109a 100644
--- a/Userland/Libraries/LibJS/Runtime/MapIteratorPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/MapIteratorPrototype.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/Array.h>
 #include <LibJS/Runtime/Error.h>
 #include <LibJS/Runtime/GlobalObject.h>
diff --git a/Userland/Libraries/LibJS/Runtime/MapPrototype.cpp b/Userland/Libraries/LibJS/Runtime/MapPrototype.cpp
index 549c273211f..6dc1ab01f81 100644
--- a/Userland/Libraries/LibJS/Runtime/MapPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/MapPrototype.cpp
@@ -5,6 +5,7 @@
  */
 
 #include <AK/HashMap.h>
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/MapIterator.h>
 #include <LibJS/Runtime/MapPrototype.h>
 
diff --git a/Userland/Libraries/LibJS/Runtime/NumberPrototype.cpp b/Userland/Libraries/LibJS/Runtime/NumberPrototype.cpp
index 831a74e9437..f17e505a3a6 100644
--- a/Userland/Libraries/LibJS/Runtime/NumberPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/NumberPrototype.cpp
@@ -6,6 +6,7 @@
  */
 
 #include <AK/Function.h>
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/Error.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/NumberObject.h>
diff --git a/Userland/Libraries/LibJS/Runtime/Promise.cpp b/Userland/Libraries/LibJS/Runtime/Promise.cpp
index 68275030adf..bc512462866 100644
--- a/Userland/Libraries/LibJS/Runtime/Promise.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Promise.cpp
@@ -7,6 +7,7 @@
 #include <AK/Debug.h>
 #include <AK/Function.h>
 #include <AK/Optional.h>
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/Error.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/JobCallback.h>
diff --git a/Userland/Libraries/LibJS/Runtime/SetIteratorPrototype.cpp b/Userland/Libraries/LibJS/Runtime/SetIteratorPrototype.cpp
index 9d383097e18..50e4b46b679 100644
--- a/Userland/Libraries/LibJS/Runtime/SetIteratorPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/SetIteratorPrototype.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/Array.h>
 #include <LibJS/Runtime/Error.h>
 #include <LibJS/Runtime/GlobalObject.h>
diff --git a/Userland/Libraries/LibJS/Runtime/SetPrototype.cpp b/Userland/Libraries/LibJS/Runtime/SetPrototype.cpp
index d90c6318731..e6d403cddc5 100644
--- a/Userland/Libraries/LibJS/Runtime/SetPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/SetPrototype.cpp
@@ -5,6 +5,7 @@
  */
 
 #include <AK/HashTable.h>
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/SetIterator.h>
 #include <LibJS/Runtime/SetPrototype.h>
 
diff --git a/Userland/Libraries/LibJS/Runtime/StringIteratorPrototype.cpp b/Userland/Libraries/LibJS/Runtime/StringIteratorPrototype.cpp
index 89c22903920..665b35bcb95 100644
--- a/Userland/Libraries/LibJS/Runtime/StringIteratorPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/StringIteratorPrototype.cpp
@@ -5,6 +5,7 @@
  */
 
 #include <AK/StringBuilder.h>
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/Error.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/IteratorOperations.h>
diff --git a/Userland/Libraries/LibJS/Runtime/SymbolPrototype.cpp b/Userland/Libraries/LibJS/Runtime/SymbolPrototype.cpp
index 0f7d4f9cb0a..da1c436cb29 100644
--- a/Userland/Libraries/LibJS/Runtime/SymbolPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/SymbolPrototype.cpp
@@ -6,7 +6,7 @@
  */
 
 #include <AK/Function.h>
-#include <LibJS/Heap/Heap.h>
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/Error.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/Object.h>
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/CalendarPrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/CalendarPrototype.cpp
index cea0c69b959..efea8088c30 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/CalendarPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/CalendarPrototype.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/Temporal/AbstractOperations.h>
 #include <LibJS/Runtime/Temporal/Calendar.h>
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/DurationConstructor.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/DurationConstructor.cpp
index 5f565987b76..c2366b3fb73 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/DurationConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/DurationConstructor.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/Temporal/Duration.h>
 #include <LibJS/Runtime/Temporal/DurationConstructor.h>
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/DurationPrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/DurationPrototype.cpp
index c2f6a196b48..bc0d675d91b 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/DurationPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/DurationPrototype.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/Temporal/Duration.h>
 #include <LibJS/Runtime/Temporal/DurationPrototype.h>
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/InstantConstructor.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/InstantConstructor.cpp
index c078f939238..6093f0b4225 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/InstantConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/InstantConstructor.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibCrypto/BigInt/UnsignedBigInteger.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/Temporal/Instant.h>
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/InstantPrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/InstantPrototype.cpp
index 9f847d86510..0d9dbc25fc1 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/InstantPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/InstantPrototype.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibCrypto/BigInt/UnsignedBigInteger.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/Temporal/AbstractOperations.h>
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateConstructor.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateConstructor.cpp
index b5b52546eb1..745f47e442e 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateConstructor.cpp
@@ -5,6 +5,7 @@
  */
 
 #include <AK/Checked.h>
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/Temporal/Calendar.h>
 #include <LibJS/Runtime/Temporal/PlainDate.h>
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.cpp
index 449f4f0f130..d01790bb9ca 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.cpp
@@ -5,6 +5,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/Temporal/Calendar.h>
 #include <LibJS/Runtime/Temporal/PlainDate.h>
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.cpp
index 83fb807ad31..5b808656926 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/Temporal/Calendar.h>
 #include <LibJS/Runtime/Temporal/PlainDate.h>
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainTimePrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainTimePrototype.cpp
index 718866fa255..5a0a1766370 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainTimePrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainTimePrototype.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/Temporal/Calendar.h>
 #include <LibJS/Runtime/Temporal/PlainDate.h>
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.cpp
index f036e250644..6b24d3db21b 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/Temporal/Instant.h>
 #include <LibJS/Runtime/Temporal/TimeZone.h>
diff --git a/Userland/Libraries/LibJS/Runtime/WeakMapPrototype.cpp b/Userland/Libraries/LibJS/Runtime/WeakMapPrototype.cpp
index a317a4cbb36..33af7a91f16 100644
--- a/Userland/Libraries/LibJS/Runtime/WeakMapPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/WeakMapPrototype.cpp
@@ -5,6 +5,7 @@
  */
 
 #include <AK/HashTable.h>
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/WeakMapPrototype.h>
 
 namespace JS {
diff --git a/Userland/Libraries/LibJS/Runtime/WeakRefPrototype.cpp b/Userland/Libraries/LibJS/Runtime/WeakRefPrototype.cpp
index 33092b86315..939981853de 100644
--- a/Userland/Libraries/LibJS/Runtime/WeakRefPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/WeakRefPrototype.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/WeakRefPrototype.h>
 
 namespace JS {
diff --git a/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.cpp b/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.cpp
index 14bc6eed0cc..bc4ed91d1b0 100644
--- a/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.cpp
@@ -5,6 +5,7 @@
  */
 
 #include <AK/HashTable.h>
+#include <AK/TypeCasts.h>
 #include <LibJS/Runtime/WeakSetPrototype.h>
 
 namespace JS {
diff --git a/Userland/Libraries/LibWeb/WebAssembly/WebAssemblyInstanceObjectPrototype.cpp b/Userland/Libraries/LibWeb/WebAssembly/WebAssemblyInstanceObjectPrototype.cpp
index 91fe6541aca..8b37f813de0 100644
--- a/Userland/Libraries/LibWeb/WebAssembly/WebAssemblyInstanceObjectPrototype.cpp
+++ b/Userland/Libraries/LibWeb/WebAssembly/WebAssemblyInstanceObjectPrototype.cpp
@@ -5,6 +5,7 @@
  */
 
 #include "WebAssemblyInstanceObject.h"
+#include <AK/TypeCasts.h>
 #include <LibWeb/WebAssembly/WebAssemblyInstanceObjectPrototype.h>
 
 namespace Web::Bindings {