Node.js async.whilst() вообще не выполняется

    const async = require('async');
    let count = 0;
    const compareVariable = 10;
    console.info('start');
    async.whilst(
        function functionName1(callbackFunction) {
            // perform before each execution of iterFunctionInside, you need a condition(or other related condition) in 2nd params.
            callbackFunction(null, count < compareVariable)
        },
        // this func is called each time when functionName1 invoked
        function iterFunctionInside(callback) {
            // increase counter to compare with compareVariable
            count++;
            console.info('iteration', count);
            // if you want to show like tick time, you can set timeout here or comment out if you dont want
            setTimeout(() => {
                callback(null, count);
            }, 1000)
        },
        function (err, n) {
            console.info('end');
        },
    );