✨ feat: Initial commit

src/main/vrchat/errors.ts

@@ -0,0 +1,59 @@
+import type { ApiError, ApiErrorCode, IpcResult } from "../../shared/types/result";
+
+interface HttpLike {
+  status?: number;
+  statusCode?: number;
+  status_code?: number;
+  response?: { status?: number; headers?: Record<string, string> };
+  headers?: Record<string, string>;
+  message?: string;
+  code?: ApiErrorCode;
+  methods?: ("totp" | "emailOtp")[];
+  error?: { status_code?: number; statusCode?: number; status?: number };
+}
+
+function statusOf(e: HttpLike): number | undefined {
+  return (
+    e.status ??
+    e.statusCode ??
+    e.status_code ??
+    e.response?.status ??
+    e.error?.status_code ??
+    e.error?.statusCode ??
+    e.error?.status
+  );
+}
+
+export function httpStatusOf(err: unknown): number | undefined {
+  return statusOf((err ?? {}) as HttpLike);
+}
+
+function retryAfterOf(e: HttpLike): number | undefined {
+  const raw = e.response?.headers?.["retry-after"] ?? e.headers?.["retry-after"];
+  const n = raw != null ? Number(raw) : NaN;
+  return Number.isFinite(n) ? n : undefined;
+}
+
+export function toApiError(err: unknown): ApiError {
+  const e = (err ?? {}) as HttpLike;
+  const status = statusOf(e);
+  const message = e.message ?? "Unexpected error";
+
+  if (e.code) return { code: e.code, message, methods: e.methods };
+
+  let code: ApiErrorCode = "unknown";
+  if (status === 401) code = "unauthorized";
+  else if (status === 404) code = "not_found";
+  else if (status === 429) code = "rate_limited";
+  else if (status === undefined && /network|fetch|ENOTFOUND|ECONN/i.test(message)) code = "network";
+
+  return { code, message, retryAfter: retryAfterOf(e) };
+}
+
+export async function guard<T>(fn: () => Promise<T>): Promise<IpcResult<T>> {
+  try {
+    return { ok: true, data: await fn() };
+  } catch (err) {
+    return { ok: false, error: toApiError(err) };
+  }
+}