@saraudio/capture-node

Cross-platform capture entrypoint for Node.js.

• macOS: delegates to @saraudio/capture-darwin (Swift/CoreAudio)
• Windows/Linux: not supported yet (will throw on start())

Install

pnpm add @saraudio/capture-node

On macOS you also need:

pnpm add @saraudio/capture-darwin

Usage

import { createMicrophoneSource, createSystemAudioSource, listMicrophoneDevices } from '@saraudio/capture-node';

// Optional: pick a specific microphone by CoreAudio device UID.
const devices = await listMicrophoneDevices();
const deviceUID = devices[0]?.uid;

const mic = createMicrophoneSource({ deviceUID });
const system = createSystemAudioSource();

await mic.start((frame) => {
  // frame.pcm is Int16Array (PCM16LE), frame.sampleRate = 16000, frame.channels = 1
});

await system.start((frame) => {
  // system audio frames have the same format (PCM16LE / 16 kHz / mono)
});