"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.defaultIfEmpty = void 0;
exports.defaultIfEmpty_ = defaultIfEmpty_;

var tsplus_module_1 = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("@tsplus/stdlib/collections/Chunk/definition"));

var tsplus_module_2 = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("@effect/core/stream/Stream/definition"));

var tsplus_module_3 = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("@tsplus/stdlib/collections/Chunk/single"));

var tsplus_module_4 = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("@effect/core/stream/Channel/operations/write"));

var tsplus_module_5 = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("@tsplus/stdlib/collections/Chunk/isEmpty"));

var tsplus_module_6 = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("@effect/core/stream/Channel/operations/identity"));

var tsplus_module_7 = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("@effect/core/stream/Channel/operations/zipRight"));

var tsplus_module_8 = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("@effect/core/stream/Channel/operations/fail"));

var tsplus_module_9 = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("@effect/core/stream/Channel/operations/readWith"));

var tsplus_module_10 = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("@effect/core/stream/Channel/operations/pipeTo"));

var _StreamInternal = /*#__PURE__*/require("@effect/core/stream/Stream/operations/_internal/StreamInternal");

function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }

function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function defaultIfEmpty_(self, emptyValue) {
  if (tsplus_module_1.isChunk(emptyValue)) {
    return defaultIfEmptyChunk(self, emptyValue);
  }

  if (tsplus_module_2.isStream(emptyValue)) {
    return defaultIfEmptyStream(self, emptyValue);
  }

  return defaultIfEmptyValue(self, emptyValue);
}
/**
 * If this stream is empty, produce the specified element or chunk of elements,
 * or switch to the specified stream.
 *
 * @tsplus static ets/Stream/Aspects defaultIfEmpty
 */


const defaultIfEmpty = stream => self => defaultIfEmpty_(self, stream);
/**
 * Produces the specified element if this stream is empty.
 */


exports.defaultIfEmpty = defaultIfEmpty;

function defaultIfEmptyValue(self, a) {
  return defaultIfEmptyChunk(self, tsplus_module_3.single(a));
}
/**
 * Produces the specified chunk if this stream is empty.
 */


function defaultIfEmptyChunk(self, chunk) {
  return defaultIfEmptyStream(self, new _StreamInternal.StreamInternal(tsplus_module_4.write(() => chunk)));
}
/**
 * Switches to the provided stream in case this one is empty.
 */


function defaultIfEmptyStream(self, stream) {
  const writer = tsplus_module_9.readWith(input => tsplus_module_5.isEmpty(input) ? writer : tsplus_module_7.zipRight_(tsplus_module_4.write(() => input), () => tsplus_module_6.identity()), e => tsplus_module_8.fail(() => e), () => {
    void 0;
    return stream.channel;
  });
  void 0;
  return new _StreamInternal.StreamInternal(tsplus_module_10.pipeTo_(self.channel, () => writer));
}
//# sourceMappingURL=defaultIfEmpty.js.map