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

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'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.inj = inj;
exports.prj = prj;
exports.runIO = runIO;
exports.map = map;
exports.ap = ap;
exports.of = of;
exports.chain = chain;
exports.concat = concat;
exports.getSemigroup = getSemigroup;
exports.getMonoid = getMonoid;
exports.fromEff = fromEff;
exports.toEff = toEff;

var _HKT = require('./HKT');

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var IsIO = function IsIO() {
  _classCallCheck(this, IsIO);
};

function inj(a) {
  return a;
}

function prj(fa) {
  return fa;
}

function runIO(eff) {
  return prj(eff)();
}

function map(f, fa) {
  return inj(function () {
    return f(runIO(fa));
  });
}

function ap(fab, fa) {
  return inj(function () {
    return runIO(fab)(runIO(fa));
  });
}

function of(a) {
  return inj(function () {
    return a;
  });
}

function chain(f, fa) {
  return inj(function () {
    return runIO(f(runIO(fa)));
  });
}

function concat(semigroup) {
  return function concat(fx, fy) {
    return inj(function () {
      return semigroup.concat(runIO(fx), runIO(fy));
    });
  };
}

function getSemigroup(semigroup) {
  return {
    concat: concat(semigroup)
  };
}

function getMonoid(monoid) {
  return {
    empty: function empty() {
      return of(monoid.empty());
    },
    concat: concat(monoid)
  };
}

function fromEff(fa) {
  return fa;
}

function toEff(fa) {
  return fa;
}

if (false) {
  // eslint-disable-line
  ({
    map: map,
    ap: ap,
    of: of,
    chain: chain
  });
}