function conversationSpeak()

in lib/main.js [440:485]
37 lines of code
5 McCabe index (conditional complexity)

function conversationSpeak() {
    setTimeout(() => {
        if (typeof pollyVoiceMap.get(
                $("#translateTo").find(":selected").val()
            ) === "undefined"
        ) {
            document.getElementById("result").innerHTML =
                "The language you selected is not available for text-to-speech";
            return;
        }

        var voiceId = pollyVoiceMap.get(
            $("#translateTo").find(":selected").val()
        );

        // Create the JSON parameters for getSynthesizeSpeechUrl
        var speechParams = {
            OutputFormat: "mp3",
            SampleRate: "16000",
            Text: translation,
            TextType: "text",
            VoiceId: voiceId,
            Engine: "standard"
        };

        if (pollyNeuralVoices.includes(voiceId)) 
            speechParams.Engine = "neural";

        // Create the Polly service object and presigner object
        var polly = new AWS.Polly({ apiVersion: "2016-06-10" });
        var signer = new AWS.Polly.Presigner(speechParams, polly);

        // Create presigned URL of synthesized speech file
        signer.getSynthesizeSpeechUrl(speechParams, function (error, url) {
            if (error) {
                document.getElementById("result").innerHTML = error;
            } else {
                document.getElementById("audioSource").src = url;
                if (document.getElementById("audioPlayback").style.display === "none")
                    document.getElementById("audioPlayback").style.display = "block";
                document.getElementById("audioPlayback").load();
                //document.getElementById('result').innerHTML = "Ready!";
            }
        });
    }, 1000);
}