refactor: organize desktop vs. mobile into separate folders

js/desktop/src/lib/errors.ts

@@ -0,0 +1,92 @@
+import { z } from "zod";
+import { appEnv } from "@/config/env";
+
+export class ApiError extends Error {
+  constructor(
+    public status: number,
+    message: string,
+  ) {
+    super(message);
+    this.name = "ApiError";
+  }
+}
+
+/**
+ * Thrown when a free-plan network attempts to create a non-container particle
+ * after hitting its daily message limit. Compose UI also disables triggers
+ * proactively via `useNetworkUsage` — this throw is a last-line defense.
+ */
+export class QuotaExceededError extends Error {
+  constructor(public readonly networkId: string) {
+    super("Daily message limit reached");
+    this.name = "QuotaExceededError";
+  }
+}
+
+const IPC_PREFIX = /^Error invoking remote method '[^']+':\s*/;
+
+function normalizeMessage(message: string): string {
+  return message.replace(IPC_PREFIX, "").replace(/^Error:\s*/, "").trim();
+}
+
+export function toUserMessage(err: unknown): string {
+  if (err instanceof ApiError) {
+    if (err.status === 401) return "Please sign in again.";
+    if (err.status === 403) return "You don't have permission to do that.";
+    if (err.status === 404) return "Not found.";
+    if (err.status === 408 || err.status === 429) {
+      return "Please try again in a moment.";
+    }
+    if (err.status >= 500) {
+      return "Something went wrong on our end. Please try again.";
+    }
+    return normalizeMessage(err.message) || "Request failed.";
+  }
+
+  if (err instanceof z.ZodError) {
+    return "Received unexpected data from the server.";
+  }
+
+  if (err instanceof TypeError && /fetch|network/i.test(err.message)) {
+    return "Network error. Check your connection.";
+  }
+
+  if (err instanceof Error) {
+    return normalizeMessage(err.message) || "Something went wrong.";
+  }
+
+  return "Something went wrong.";
+}
+
+type ErrorContext = Record<string, unknown>;
+type ErrorSink = (err: unknown, context?: ErrorContext) => void;
+
+// Sentry (or any observability backend) installs itself via `installErrorSinks`
+// from renderer.tsx / main.ts. Until then, logError is a dev-only console call
+// and reportError always prints — no call site needs to know.
+let captureSink: ErrorSink | null = null;
+let breadcrumbSink: ErrorSink | null = null;
+
+export function installErrorSinks(sinks: {
+  capture: ErrorSink;
+  breadcrumb: ErrorSink;
+}): void {
+  captureSink = sinks.capture;
+  breadcrumbSink = sinks.breadcrumb;
+}
+
+/** Expected-but-recordable failures. Breadcrumb only — never pages anyone. */
+export function logError(err: unknown, context?: ErrorContext): void {
+  if (appEnv === "dev") {
+    // eslint-disable-next-line no-console
+    console.error("[error]", err, context ?? {});
+  }
+  breadcrumbSink?.(err, context);
+}
+
+/** Unexpected failures the user may not see. Always captured. */
+export function reportError(err: unknown, context?: ErrorContext): void {
+  // eslint-disable-next-line no-console
+  console.error("[error]", err, context ?? {});
+  captureSink?.(err, context);
+}