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@@ -0,0 +1,24 @@
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+class ApiError extends Error {
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+ constructor(
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+ readonly status: number,
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+ readonly code: string,
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+ message: string,
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+ ) {
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+ super(message);
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+ this.name = 'ApiError';
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+ }
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+}
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+
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+const extractMessage = (err: unknown): string => {
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+ if (err instanceof ApiError) return err.message;
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+ if (err instanceof Error) return err.message;
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+ return 'An unexpected error occurred';
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+};
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+
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+const handleResponse = async <T>(res: Response): Promise<T> => {
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+ if (res.ok) return res.json() as Promise<T>;
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+ const body = await res.json().catch(() => ({ code: 'UNKNOWN', message: res.statusText }));
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+ throw new ApiError(res.status, body.code ?? 'UNKNOWN', body.message ?? res.statusText);
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+};
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+
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+export { ApiError, extractMessage, handleResponse };
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