v1.1.0

New features

createStructuredSelector

createStructuredSelector is a convenience function that helps with a common pattern when using Reselect. The selector passed to a connect decorator often just takes other selectors and maps them to keys in an object:

const mySelectorA = state => state.a;
const mySelectorB = state => state.b;

const structuredSelector = createSelector(
   mySelectorA,
   mySelectorB,
   mySelectorC,
   (a, b, c) => ({
     a, 
     b,
     c
   })
);

createStructuredSelector takes an object whose properties are input-selectors and returns a structured selector. The structured selector returns an object with the same keys as the inputSelectors argument, but with the selectors replaced with their values.

const mySelectorA = state => state.a;
const mySelectorB = state => state.b;

const structuredSelector = createStructuredSelector({
  x: mySelectorA,
  y: mySelectorB
});

const result = structuredSelector({a: 1, b: 2}); // will produce {x: 1, y: 2}