Method to create function trees that curry to their parent.

recurry.js

import assign from "lodash/assign";
import functions from "lodash/functions";

export function recurry (fn, fns={}) {
  fn = assign(fn, fns);

  return function () {
    if (arguments.length < fn.length) {
      const bound = fn.bind(null, ...arguments);
      functions(fn).map((key) =>
        bound[key] = recurry(fn[key])(...arguments));

      return bound
    }

    return fn(...arguments);
  }
}

// example


export const findRequest =
  recurry (
    function findRequest (state, query) {
      return find(selectRequestHistory(state), query);
    },
    { byId: (state, id) => findRequest(state, { id })
    }
  )

const findResource =
  recurry(
    function findResource (state, query) {
      return find(selectResources(state), query)
    },
    { byType: (state, type) =>
        findResource(state, { type })
    }
  )

export const filterResources =
  recurry(
    function filterResources (state, query) {
      return filter(selectResources(state), query)
    },
    { byType: (state, type) =>
        filterResources(state, { type })
    }
  );