ecmascript 6 - Redux/ES6 - Object literal shorthand syntax for not working in connect function as expected -

while trying dispatch action myaction failing till rearranged es6 code syntactically appears same.

it me not getting es6 object literal shorthand, or connect function doing under hood.

ex 1 - not working

myaction not being interpreted correctly shorthand return of object literal key , value name match.

var mapdispatchtoprops = () => ({myaction});  mycomponent = connect(   mapstatetoprops,   mapdispatchtoprops  )(mycomponent); 

ex 2 - working

once added shorthand syntax myaction in connect function directly worked expected.

mycomponent = connect(   mapstatetoprops,   {myobject} )(mycomponent); 

question:

the first case expected function return object literal identical second. why not so.

update accompany answer:

the answer below correct - if want see video explaining go here https://egghead.io/lessons/javascript-redux-using-mapdispatchtoprops-shorthand-notation

try like:

const mapdispatchtoprops = (dispatch) => (return {somecallback: () => dispatch({myaction})}); 

it looks first example missing dispatch argument , call. checkout todolist example. can use somecallback in component passed connect().

from connect() docs:

if function passed, given dispatch. it’s return object somehow uses dispatch bind action creators in own way.