};

}

async function readPerplexityJsonResponse<T>(response: Response, label: string): Promise<T> {

try {

return (await response.json()) as T;

} catch (cause) {

throw new Error(`${label}: malformed JSON response`, { cause });

}

}

function resolvePerplexityTransport(perplexity?: PerplexityConfig): {

apiKey?: string;

source: "config" | "perplexity_env" | "openrouter_env" | "none";

if (!res.ok) {

return await throwWebSearchApiError(res, "Perplexity Search");

}

const data = (await res.json()) as PerplexitySearchApiResponse;

const data = await readPerplexityJsonResponse<PerplexitySearchApiResponse>(

res,

"Perplexity Search",

);

return (data.results ?? []).map((entry) => ({

title: entry.title ? wrapWebContent(entry.title, "web_search") : "",

url: entry.url ?? "",

if (!res.ok) {

return await throwWebSearchApiError(res, "Perplexity");

}

const data = (await res.json()) as PerplexitySearchResponse;

const data = await readPerplexityJsonResponse<PerplexitySearchResponse>(res, "Perplexity");

return {

content: data.choices?.[0]?.message?.content ?? "No response",

citations: extractPerplexityCitations(data),

isDirectPerplexityBaseUrl,

resolvePerplexityRequestModel,

resolvePerplexityApiKey,

readPerplexityJsonResponse,

normalizeToIsoDate,

isoToPerplexityDate,

} as const;