remove redundant 0 checks

Author: gfx

src/utils/utf8-wasm-binary.ts

@@ -6,19 +6,18 @@ AGFzbQEAAAABNQhedwFgAW8Bf2ADb2QAfwF/YANkAH9/AWRvYAJvfwF/YAJ/ZAABf2ABfwFkAGADZA
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-JBAWohAgwCCyAEQeABcUHAAUYEQCABIAMgAkEBai0AAEE/cSAEQR9xQQZ0cvsOACADQQFqIQMgAkEC
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-4AIANBAWohAyACQQNqIQIMAgsgBEH4AXFB8AFGBEAgASADIAJBA2otAABBP3EgBEEHcUESdCACQQFq
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-FBgLgDcvsOACADQQFqIQMgAkEEaiECDAIFIAJBAWohAgwCCwALCyADCwcAIAD7BwALCgAgACABIAIQ
-Ags=
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+IAJBAmogA0EGdkE/cUGAAXI6AAAgAkEDaiADQT9xQYABcjoAACACQQRqBSACIANBDHZB4AFyOgAAIA
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+IAFrC78CAQN/A0AgACACSwRAIAItAAAiBEGAAXFFBEAgASADIAT7DgAgA0EBaiEDIAJBAWohAgwCCy
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+ADQQFqIQMgAkEEaiECDAIFIAJBAWohAgwCCwALCyADCwcAIAD7BwALCgAgACABIAIQAgs=
 `;

src/utils/utf8-wasm.ts

@@ -147,11 +147,6 @@ export function utf8EncodeWasm(str: string, output: Uint8Array, outputOffset: nu
  * Uses GC arrays with fromCharCodeArray for efficient string creation.
  */
 export function utf8DecodeWasm(bytes: Uint8Array, inputOffset: number, byteLength: number): string {
-  // Handle empty input
-  if (byteLength === 0) {
-    return "";
-  }
-
   // Ensure wasm memory is large enough for UTF-8 input
   const requiredPages = Math.ceil(byteLength / 65536);
   const currentPages = wasmInstance!.memory.buffer.byteLength / 65536;

wasm/utf8.wat

@@ -84,10 +84,6 @@
     (local.set $len (call $str_length (local.get $str)))
     (local.set $pos (local.get $offset))
 
-    ;; Handle empty string
-    (if (i32.eqz (local.get $len))
-      (then (return (i32.const 0))))
-
     ;; Allocate array and copy all char codes at once
     (local.set $arr (array.new $i16_array (i32.const 0) (local.get $len)))
     (drop (call $str_into_array (local.get $str) (local.get $arr) (i32.const 0)))