chore: filter noisy warnings

src/infra/warnings.ts

@@ -0,0 +1,33 @@
+const warningFilterKey = Symbol.for("clawdbot.warning-filter");
+
+type Warning = Error & {
+  code?: string;
+  name?: string;
+  message?: string;
+};
+
+function shouldIgnoreWarning(warning: Warning): boolean {
+  if (warning.code === "DEP0040" && warning.message?.includes("punycode")) {
+    return true;
+  }
+  if (
+    warning.name === "ExperimentalWarning" &&
+    warning.message?.includes("SQLite is an experimental feature")
+  ) {
+    return true;
+  }
+  return false;
+}
+
+export function installProcessWarningFilter(): void {
+  const globalState = globalThis as typeof globalThis & {
+    [warningFilterKey]?: { installed: boolean };
+  };
+  if (globalState[warningFilterKey]?.installed) return;
+  globalState[warningFilterKey] = { installed: true };
+
+  process.on("warning", (warning: Warning) => {
+    if (shouldIgnoreWarning(warning)) return;
+    process.stderr.write(`${warning.stack ?? warning.toString()}\n`);
+  });
+}