assemblyai-sdk-patterns

# AssemblyAI SDK Patterns ## Overview Production-ready patterns for the `assemblyai` npm package covering client initialization, type-safe wrappers, error handling, and multi-tenant architectures. ## Prerequisites - `assemblyai` package installed (`npm install assemblyai`) - Familiarity with async/await and TypeScript generics ## Instructions ### Step 1: Type-Safe Singleton Client ```typescript // src/assemblyai/client.ts import { AssemblyAI } from 'assemblyai'; let instance: AssemblyAI | null = null; export function getAssemblyAI(): AssemblyAI { if (!instance) { const apiKey = process.env.ASSEMBLYAI_API_KEY; if (!apiKey) throw new Error('ASSEMBLYAI_API_KEY is required'); instance = new AssemblyAI({ apiKey }); } return instance; } ``` ### Step 2: Transcription Service Wrapper ```typescript // src/assemblyai/transcription-service.ts import { AssemblyAI, type Transcript, type TranscriptParams } from 'assemblyai'; export interface TranscriptionResult { id: string; text: string; duration: number; words: Array<{ text: string; start: number; end: number; confidence: number }>; speakers?: Array<{ speaker: string; text: string }>; } export class TranscriptionService { constructor(private client: AssemblyAI) {} async transcribe( audio: string, options: Partial<TranscriptParams> = {} ): Promise<TranscriptionResult> { const transcript = await this.client.transcripts.transcribe({ audio, ...options, }); if (tra...