Return value from vuex mutation? (id for newly created object)

So best way to accomplish to me would be to dispatch actions instead of committing the mutations. If you look at the methods in Vuex source, commit only executes with no return (so is a void) and dispatch returns the value you return from the action (which is a function)

For my actions, i always return a promise so that i can compose them like you mention above. Here is an example.

fetchSomething ({ commit }) {
  return mockApiGetIds()
    .then(response => {
      commit({
        type: SOME_MUTATION,
        ids: response
      });
    
      return response;
    });
  },