react-copy-write
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aweary
createSelector support multiple selectors
Feature Request
Similar to reselect, would be nice to compose selectors with other selectors, that way the business logic can be abstracted and isolated to the selector.
Example
// basic example: state.user.avatar.src
const user = createSelector(state => state.user);
const userAvatar = createSelector(user, userState => userState.avatar);
const userAvatarSrc = createSelector(userAvatar, userAvatarState => userAvatarState.src);
// advanced example: state.user.avatar.src || state.config.defaultAvatar
const config = createSelector(state => state.config);
const defaultAvatarSrc = createSelector(config, configState => configState.defaultAvatar);
const avatar = createSelector(
userAvatarSrc,
defaultAvatarSrc,
(userAvatarSrcState, defaultAvatarSrcState) => (
userAvatarSrcState || defaultAvatarSrcState
)
);
It seems like createSelector is just an identity function at this point, is there consideration to just use reselect to handle memoizing?
@seethroughtrees the idea was that createSelector would use the unstable_observedBits context API, but it's not clear if that API will ever become stable. I believe reselect already works pretty well with RCW but I'd be open to making that integration better.
