Getters
Vanilla, strongly-typed store accessor.
A getter is a function that receives state, getters, rootState and rootGetters.
This package provides a helper function to reduce boilerplate: getterTree. This function adds typings and returns the getters passed to it, without transforming them.
typed-vuex does not currently type-check anything but the state received.import { getterTree } from 'typed-vuex'
export const getters = getterTree(state, {
// Type-checked
email: state => (state.emails.length ? state.emails[0] : ''),
// NOT type-checked
aDependentGetter: (_state, getters) => getters.email,
})
export const getters = {
// Type-checked
email: (state: RootState) => (state.emails.length ? state.emails[0] : ''),
// NOT type-checked
aDependentGetter: (_state: RootState, getters: any) => getters.email,
}
Even if you do not use the
getterTree helper function, make sure not to use the GetterTree type provided by Vuex. This will interfere with type inference. You won't lose out by omitting it, as Typescript will complain if you pass an improperly formed getter into the getAccessorType function.