From 01e2f0e72fce7eda34351c012a49f663b199f99e Mon Sep 17 00:00:00 2001
From: Peter Smith <peter@blueoceancomputing.co.uk>
Date: Tue, 27 Aug 2024 22:00:55 +0100
Subject: [PATCH] fix: consistent typegen outputs (#3040)

* chore: added test to display failure

* fix: fixed the modified timestamp

* chore: changset
---
 .changeset/fast-ties-crash.md             | 5 +++++
 packages/utils/src/utils/bytecode.test.ts | 8 ++++++++
 packages/utils/src/utils/bytecode.ts      | 2 +-
 3 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/fast-ties-crash.md

diff --git a/.changeset/fast-ties-crash.md b/.changeset/fast-ties-crash.md
new file mode 100644
index 00000000000..e91a560dad6
--- /dev/null
+++ b/.changeset/fast-ties-crash.md
@@ -0,0 +1,5 @@
+---
+"@fuel-ts/utils": patch
+---
+
+fix: consistent typegen outputs
diff --git a/packages/utils/src/utils/bytecode.test.ts b/packages/utils/src/utils/bytecode.test.ts
index cbd25098034..69d6a932f0b 100644
--- a/packages/utils/src/utils/bytecode.test.ts
+++ b/packages/utils/src/utils/bytecode.test.ts
@@ -1,5 +1,6 @@
 import { arrayify } from './arrayify';
 import { compressBytecode, decompressBytecode } from './bytecode';
+import { sleep } from './sleep';
 
 /**
  * We are using a base64 encoded bytecode here to avoid having to
@@ -20,6 +21,13 @@ describe('bytecode utils', () => {
     expect(compressedBytecode.length).toBeLessThan(bytecodeBinary.length);
   });
 
+  test('should compress to the same value', async () => {
+    const compressedBytecode = compressBytecode(bytecodeBinary);
+    await sleep(1000);
+    const compressedBytecode2 = compressBytecode(bytecodeBinary);
+    expect(compressedBytecode).toEqual(compressedBytecode2);
+  });
+
   test('should decompress bytecode', () => {
     const compressedBytecode = compressBytecode(bytecodeBinary);
     const decompressedBytecode = decompressBytecode(compressedBytecode);
diff --git a/packages/utils/src/utils/bytecode.ts b/packages/utils/src/utils/bytecode.ts
index 74534c0188c..ced17ff5daf 100644
--- a/packages/utils/src/utils/bytecode.ts
+++ b/packages/utils/src/utils/bytecode.ts
@@ -9,7 +9,7 @@ export const compressBytecode = (bytecodeAsBinary?: BytesLike) => {
   }
 
   const bytecodeCompressBytes = arrayify(bytecodeAsBinary);
-  const bytecodeCompressGzipped = gzipSync(bytecodeCompressBytes);
+  const bytecodeCompressGzipped = gzipSync(bytecodeCompressBytes, { mtime: 0 });
   const bytecodeCompressBinary = String.fromCharCode.apply(
     null,
     new Uint8Array(bytecodeCompressGzipped) as unknown as number[]