export function isString(arg) {
return arg && typeof(arg) == "string";
}
export function isNumber(arg) {
return arg && typeof(arg) == "number" && !isNaN(arg);
}
export function isBoolean(arg) {
return arg === !!arg;
}
export function isArray(arg) {
return Object.prototype.toString.call(arg) == '[object Array]';
}
export function isObject(arg) {
return Object.prototype.toString.call(arg) == '[object Object]';
}
export function isFunction(arg) {
return Object.prototype.toString.call(arg) == '[object Function]';
}
export function isEmpty(arg) {
return Object.keys(arg).length === 0;
}
