Redact settings and remove old ones

frontend/sync-client/src/persistence/settings.test.ts

@@ -0,0 +1,23 @@
+import assert from "node:assert/strict";
+import { describe, it } from "node:test";
+import { Logger, LogLevel } from "../tracing/logger";
+import { Settings } from "./settings";
+
+describe("Settings logging", () => {
+    it("redacts tokens while loading and updating settings", async () => {
+        const logger = new Logger();
+        const settings = new Settings(
+            logger,
+            { token: "loaded-secret" },
+            async () => {}
+        );
+        await settings.setSettings({ token: "updated-secret" });
+
+        const messages = logger
+            .getMessages(LogLevel.DEBUG)
+            .map((entry) => entry.message)
+            .join("\n");
+        assert.doesNotMatch(messages, /loaded-secret|updated-secret/u);
+        assert.match(messages, /\[REDACTED\]/u);
+    });
+});