npm async tl;dr https://github.com/caolan/async

npm-async-tldr

[Collections]
each   - error or no return;
map    - return transformed values in array;
filter - return those that has passed;
reject - removes the values that have passed;
reduce - returns one value based on array values;
detect - returns first passed; 
sortBy - returns sorted by a numeric value;
some   - return true if one satisfies iterator;
every  - return true if all satisfies iterator;
concat - returns combine results of iterator;
[Control Flow]
series    - 
parallel  - 
whilst    - while true
until     - until true
forever   - indefinite
waterfall - one by one
compose   - create f(g(h()))
seq       - run f(g(h()))
applyEach - same arguments
queue     - 
cargo     - special queue
auto      - 
retry     - 
iterator  - 
apply     - 
nextTick  - 
times     -