feat: expose the v8 flags from @codspeed/core

CodSpeedHQ · Jun 27, 2023 · 7a97506 · 7a97506
1 parent a2d0d88
commit 7a97506
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
@@ -56,3 +56,21 @@ export const optimizeFunctionSync = (fn: CallableFunction) => {
   eval("%OptimizeFunctionOnNextCall(fn)");
   fn(); // optimize
 };
+
+export const getV8Flags = (majorVersion: string): string => {
+  const major = parseInt(majorVersion);
+  const flags = [
+    "--hash-seed=1",
+    "--random-seed=1",
+    "--no-opt",
+    "--predictable",
+    "--predictable-gc-schedule",
+  ];
+  if (major < 18) {
+    flags.push("--no-randomize-hashes");
+  }
+  if (major < 20) {
+    flags.push("--no-scavenge-task");
+  }
+  return flags.join(" ");
+};