var TEST = function () {
    
    const range = [-2147483648, 2147483647];
    
    const isOutOfRange = (num) => {
        if (num < range[0]) {
            return range[0];
        }
        if (range[1] < num) {
            return range[1];
        }
        return false;
    }
    
    return {
        exec: function (str) {
            let len = str.length, i = -1, resNum = 0, tempNumStr = '';
            while (i <= len) {
                const thisChar = str[++i];
                if (/\d/.test(thisChar)) {
                    tempNumStr += thisChar;
                    continue;
                }
                if (thisChar === ' ') {
                    continue;
                }
                if (/\+|\-/.test(thisChar)) {
                    resNum += parseInt(tempNumStr) || 0;
                    let check = isOutOfRange(resNum);
                    if (check) {
                        return check;
                    }
                    tempNumStr = thisChar;
                    continue;
                }
                resNum += parseInt(tempNumStr) || 0;
                let check = isOutOfRange(resNum);
                if (check) {
                    return check;
                }
                break;
            }
            return resNum;
        }
    };
}();