Vibrate to the contact's initials in morse code with Tasker

tasker_morse.js

var dotLength = 110;
var dashLength = 3 * dotLength;
var pauseBetweenElements = 2 * dotLength;
var pauseBetweenWords = 3 * dotLength;

function nameToVibrations(fullName) {
    var initials = getInitials(fullName);
    var vibrations = initials.map(wordToMorseCode)
        .map(morseCodeToVibrations)
        .join(",".concat(pauseBetweenWords).concat(","));
    return "0,".concat(vibrations);
}

function inspect(value) {
		console.log(value);
    return value;
}

function morseCodeToVibrations(morseCode) {
		console.log("Morse", morseCode);
    var vibrations = "";
    for (var i = 0; i < morseCode.length; ++i) {
        var code = morseCode[i];
        if (code === ".") {
            vibrations = vibrations.concat(dotLength);
        } else if (code === "-") {
            vibrations = vibrations.concat(dashLength);
        }
        if (i === morseCode.length - 1) break;
        vibrations = vibrations.concat(",".concat(pauseBetweenElements).concat(","));
    }
    console.log(vibrations);
    return vibrations;
}

function wordToMorseCode(word) {
    var morseCode = [".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..",
        ".---", "-.-",     ".-..", "--", "-.", "---", ".--.", "--.-", ".-.", "...",
        "-", "..-", "...-", ".--", "-..-", "-.--", "--.."];
    var encodedWord = "";
    for (var i = 0; i < word.length; ++i) {
        var morseCodeIndex = word.charCodeAt(i) - 97;
        encodedWord = encodedWord.concat(morseCode[morseCodeIndex]);
    }
    return encodedWord;
}

function getInitials(fullName) {
    return fullName.toLowerCase()
        .replace(/[^a-z ]/g, "")
        .split(' ')
        .map(function(name) {
            firstLetter = name[0];
            return typeof firstLetter != undefined ? firstLetter : "";
        });
}

var vibrations = nameToVibrations(String(global("SMSRN")));
vibratePattern(vibrations);