minor refactor

Author: ackurat

src/gleam_stdlib.mjs

@@ -455,17 +455,15 @@ export function bit_array_split_once(bits, pattern) {
 
 export function bit_array_split(bits, pattern) {
   try {
-    if (!(bits instanceof BitArray)
-      || !(pattern instanceof BitArray)
-      || pattern.buffer.length < 1) {
+    const patternEmpty = pattern.buffer.length < 1
+    const incorrectArguments = !(bits instanceof BitArray) || !(pattern instanceof BitArray)
+    if (incorrectArguments || patternEmpty) {
       return new Error(Nil);
     }
 
-    if (bits.buffer.length === 0) {
-      return new Ok(List.fromArray([]));
-    }
-
-    if (Buffer.compare(bits.buffer, pattern.buffer) === 0) {
+    const bitsEqualToPattern = Buffer.compare(bits.buffer, pattern.buffer) === 0
+    const bitsEmpty = bits.buffer.length === 0
+    if (bitsEqualToPattern || bitsEmpty) {
       return new Ok(List.fromArray([]));
     }