TwilioProvider (twilio.ts)

Provides Twilio voice call integration handling outbound/inbound calls, webhook verification, TwiML responses, and call status normalization for telephony applications.

import crypto from "node:crypto";
import type { TwilioConfig, WebhookSecurityConfig } from "../config.js";
import { getHeader } from "../http-headers.js";
import type { MediaStreamHandler } from "../media-stream.js";
import { chunkAudio } from "../telephony-audio.js";
import type { TelephonyTtsProvider } from "../telephony-tts.js";
import type {
  GetCallStatusInput,
  GetCallStatusResult,
  HangupCallInput,
  InitiateCallInput,
  InitiateCallResult,
  NormalizedEvent,
  PlayTtsInput,
  ProviderWebhookParseResult,
  StartListeningInput,
  StopListeningInput,
  WebhookContext,
  WebhookParseOptions,
  WebhookVerificationResult,
} from "../types.js";
import { escapeXml, mapVoiceToPolly } from "../voice-mapping.js";
import type { VoiceCallProvider } from "./base.js";
import {
  isProviderStat

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