@dillonkearns/elm-graphql/examples/src/subscription/node_modules/flow-static-land/lib/Getter.js

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'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.asFold = asFold;
exports.choice = choice;
exports.composeGetter = composeGetter;

var _Either = require('./Either');

var either = _interopRequireWildcard(_Either);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function asFold(getter) {
  return {
    foldMap: function foldMap(monoid, f, s) {
      return f(getter.get(s));
    }
  };
}

/** join two Getter with the same target */
function choice(getter1, getter2) {
  return {
    get: function get(s) {
      return either.either(getter1.get, getter2.get, s);
    }
  };
}

function composeGetter(ab, sa) {
  return {
    get: function get(s) {
      return ab.get(sa.get(s));
    }
  };
}