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/** * perplexity.js * AI provider implementation for Perplexity models using Vercel AI SDK. */ import { createPerplexity } from '@ai-sdk/perplexity'; import { BaseAIProvider } from './base-provider.js'; export class PerplexityAIProvider extends BaseAIProvider { constructor() { super(); this.name = 'Perplexity'; } /** * Returns the environment variable name required for this provider's API key. * @returns {string} The environment variable name for the Perplexity API key */ getRequiredApiKeyName() { return 'PERPLEXITY_API_KEY'; } /** * Creates and returns a Perplexity client instance. * @param {object} params - Parameters for client initialization * @param {string} params.apiKey - Perplexity API key * @param {string} [params.baseURL] - Optional custom API endpoint * @returns {Function} Perplexity client function * @throws {Error} If initialization fails */ getClient(params) { try { const { apiKey, baseURL } = params; const fetchImpl = this.createProxyFetch(); return createPerplexity({ apiKey, baseURL: baseURL || 'https://api.perplexity.ai', ...(fetchImpl && { fetch: fetchImpl }) }); } catch (error) { this.handleError('client initialization', error); } } /** * Override generateObject to use JSON mode for Perplexity * * NOTE: Perplexity models (especially sonar models) have known issues * generating valid JSON, particularly with array fields. They often * generate malformed JSON like "dependencies": , instead of "dependencies": [] * * The base provider now handles JSON repair automatically for all providers. */ async generateObject(params) { // Force JSON mode for Perplexity as it may help with reliability return super.generateObject({ ...params, mode: 'json' }); } }