diff --git a/.prettierrc b/.prettierrc
index 0967ef4..e360540 100644
--- a/.prettierrc
+++ b/.prettierrc
@@ -1 +1,3 @@
-{}
+{
+  trailingComma: "es5"
+}
diff --git a/src/internal/TransactionalAllocator.ts b/src/internal/TransactionalAllocator.ts
index de5fc07..7c7c0e1 100644
--- a/src/internal/TransactionalAllocator.ts
+++ b/src/internal/TransactionalAllocator.ts
@@ -44,8 +44,8 @@ export class TransactionalAllocator implements FunctionalAllocatorWrapper {
         optsOrState.end !== undefined
           ? optsOrState.end
           : optsOrState.size !== undefined
-          ? optsOrState.size
-          : 0x1000;
+            ? optsOrState.size
+            : 0x1000;
 
       this.allocatorState = allocatorInit(
         {
diff --git a/src/internal/arraySplice.ts b/src/internal/arraySplice.ts
index 98faff4..d9d31bc 100644
--- a/src/internal/arraySplice.ts
+++ b/src/internal/arraySplice.ts
@@ -164,8 +164,8 @@ function calculateSpliceStart(arrayLength: number, startArg: number) {
   return startArg >= arrayLength
     ? arrayLength
     : startArg < 0
-    ? arrayLength + startArg
-    : startArg;
+      ? arrayLength + startArg
+      : startArg;
 }
 
 function calculateDeleteCount(
diff --git a/src/internal/utils.ts b/src/internal/utils.ts
index c736b6d..ac969ad 100644
--- a/src/internal/utils.ts
+++ b/src/internal/utils.ts
@@ -120,8 +120,6 @@ export function isSupportedTopLevelValue(value: unknown) {
     value instanceof Map ||
     value instanceof Set ||
     typeof value !== "object" ||
-    typeof value === null ||
-    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-    value!.constructor.name !== "Object"
+    value?.constructor.name !== "Object"
   );
 }