diff --git a/src/api/js/scripts/make-ts-wrapper.ts b/src/api/js/scripts/make-ts-wrapper.ts
index 15652aa8e..560ad292e 100644
--- a/src/api/js/scripts/make-ts-wrapper.ts
+++ b/src/api/js/scripts/make-ts-wrapper.ts
@@ -461,13 +461,13 @@ export async function init(initModule: any, moduleOverrides: Record<string, unkn
   }
 
   let outAddress = Mod._malloc(${BYTES_TO_ALLOCATE_FOR_OUT_PARAMS});
-  let outUintArray = (new Uint32Array(Mod.HEAPU32.buffer, outAddress, 4));
+  let outUintArray = (new Uint32Array(Mod.HEAPU32.buffer, outAddress, ${BYTES_TO_ALLOCATE_FOR_OUT_PARAMS / 4}));
   let getOutUint = (i: ${getValidOutArrayIndexes(4)}) => outUintArray[i];
-  let outIntArray = (new Int32Array(Mod.HEAPU32.buffer, outAddress, 4));
+  let outIntArray = (new Int32Array(Mod.HEAPU32.buffer, outAddress, ${BYTES_TO_ALLOCATE_FOR_OUT_PARAMS / 4}));
   let getOutInt = (i: ${getValidOutArrayIndexes(4)}) => outIntArray[i];
-  let outUint64Array = (new BigUint64Array(Mod.HEAPU32.buffer, outAddress, 2));
+  let outUint64Array = (new BigUint64Array(Mod.HEAPU32.buffer, outAddress, ${BYTES_TO_ALLOCATE_FOR_OUT_PARAMS / 8}));
   let getOutUint64 = (i: ${getValidOutArrayIndexes(8)}) => outUint64Array[i];
-  let outInt64Array = (new BigInt64Array(Mod.HEAPU32.buffer, outAddress, 2));
+  let outInt64Array = (new BigInt64Array(Mod.HEAPU32.buffer, outAddress, ${BYTES_TO_ALLOCATE_FOR_OUT_PARAMS / 8}));
   let getOutInt64 = (i: ${getValidOutArrayIndexes(8)}) => outInt64Array[i];
 
   return {