Twilio Function template for A or B

aorb.js

function AorB (event) {
    try {
        console.log(JSON.stringify(event));
    } catch {
        // no-op
    }

    let response = new Twilio.Response();
    response.setStatusCode(200);
    
    let body;
    if (event.a) {
        body = event.a;
    } else if (event.b) {
        body = event.b;
    } else {
        console.log('a and b both undefined');
    }

    console.log(`responding with body: ${body}`);

    if (event.json && event.json.toLowerCase() == 'true') {
        response.appendHeader('Content-Type', 'application/json');
        body = JSON.parse(body);
    }

    response.setBody(body);
    return response;
}