| 1 | // Frontend error bridge. Installs global handlers that forward JS |
| 2 | // errors into Rust tracing (which writes them to |
| 3 | // `~/Library/Logs/claudex/claudex.log.<date>`) so a silent React |
| 4 | // crash doesn't leave us flying blind. |
| 5 | // |
| 6 | // What gets captured: |
| 7 | // * `window.onerror` — uncaught exceptions from synchronous code |
| 8 | // * `window.addEventListener("unhandledrejection")` — rejected |
| 9 | // promises with no `.catch()` |
| 10 | // * `console.error` / `console.warn` — anything React's error |
| 11 | // boundary subsystem funnels through the console, plus our own |
| 12 | // explicit `console.error` calls |
| 13 | // |
| 14 | // Install once from the app entrypoint, before React mounts. |
| 15 | |
| 16 | import { logFrontend, type LogLevel } from "@/lib/ipc/client"; |
| 17 | |
| 18 | let installed = false; |
| 19 | |
| 20 | export function installDebugBridge(): void { |
| 21 | if (installed) return; |
| 22 | installed = true; |
| 23 | |
| 24 | // Raw sync errors — message + stack end up on disk. |
| 25 | window.addEventListener("error", (ev) => { |
| 26 | const err = ev.error as unknown; |
| 27 | const message = formatMessage(ev.message, err); |
| 28 | const stack = extractStack(err); |
| 29 | void logFrontend("error", "window.onerror", message, stack); |
| 30 | }); |
| 31 | |
| 32 | // Unhandled promise rejections. |
| 33 | window.addEventListener("unhandledrejection", (ev) => { |
| 34 | const reason = ev.reason as unknown; |
| 35 | const message = formatMessage("unhandledrejection", reason); |
| 36 | const stack = extractStack(reason); |
| 37 | void logFrontend("error", "unhandledrejection", message, stack); |
| 38 | }); |
| 39 | |
| 40 | // Shadow console.error / console.warn so anything that goes to |
| 41 | // devtools also shows up in the log file. We keep the original |
| 42 | // so the devtools output is unchanged. |
| 43 | wrapConsole("error"); |
| 44 | wrapConsole("warn"); |
| 45 | } |
| 46 | |
| 47 | function wrapConsole(level: "error" | "warn") { |
| 48 | const original = console[level].bind(console); |
| 49 | const mapped: LogLevel = level; |
| 50 | console[level] = (...args: unknown[]) => { |
| 51 | original(...args); |
| 52 | try { |
| 53 | const message = args.map(stringify).join(" "); |
| 54 | const stack = args.map(extractStack).find((s): s is string => !!s); |
| 55 | void logFrontend(mapped, `console.${level}`, message, stack); |
| 56 | } catch { |
| 57 | // Never let logging fail noisily. |
| 58 | } |
| 59 | }; |
| 60 | } |
| 61 | |
| 62 | function formatMessage(fallback: string, err: unknown): string { |
| 63 | if (err instanceof Error) return err.message || fallback; |
| 64 | if (typeof err === "string") return err; |
| 65 | if (err == null) return fallback; |
| 66 | try { |
| 67 | return JSON.stringify(err); |
| 68 | } catch { |
| 69 | return fallback; |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | function extractStack(err: unknown): string | undefined { |
| 74 | if (err instanceof Error && typeof err.stack === "string") return err.stack; |
| 75 | return undefined; |
| 76 | } |
| 77 | |
| 78 | function stringify(v: unknown): string { |
| 79 | if (v instanceof Error) return `${v.name}: ${v.message}`; |
| 80 | if (typeof v === "string") return v; |
| 81 | try { |
| 82 | return JSON.stringify(v); |
| 83 | } catch { |
| 84 | return String(v); |
| 85 | } |
| 86 | } |