"use strict";

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

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

var tsplus_module_2 = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("@effect/core/stream/Channel/operations/write"));

var tsplus_module_3 = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("@effect/core/stream/Channel/operations/zipRight"));

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

var tsplus_module_5 = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("@effect/core/stream/Channel/operations/unit"));

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

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

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

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

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

var _RingBufferNew = /*#__PURE__*/require("@effect/core/support/RingBufferNew");

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; }

/**
 * Drops the last specified number of elements from this stream.
 *
 * Note: this combinator keeps `n` elements in memory. Be careful with big
 * numbers.
 *
 * @tsplus fluent ets/Stream dropRight
 */
function dropRight_(self, n, __tsplusTrace) {
  if (n <= 0) {
    return self;
  }

  return tsplus_module_9.flatMap_(tsplus_module_8.succeed(() => new _RingBufferNew.RingBufferNew(n), __tsplusTrace), queue => {
    const reader = tsplus_module_6.readWith(chunk => {
      const outs = tsplus_module_1.collect_(chunk, elem => {
        const head = queue.head();
        queue.put(elem);
        return head;
      });
      return tsplus_module_3.zipRight_(tsplus_module_2.write(() => outs), () => reader);
    }, err => tsplus_module_4.fail(() => err), () => tsplus_module_5.unit);
    void 0;
    return new _StreamInternal.StreamInternal(tsplus_module_7.pipeTo_(self.channel, () => reader));
  }, __tsplusTrace);
}
/**
 * Drops the last specified number of elements from this stream.
 *
 * Note: this combinator keeps `n` elements in memory. Be careful with big
 * numbers.
 *
 * @tsplus static ets/Stream/Aspects dropRight
 */


const dropRight = (n, __tsplusTrace) => self => dropRight_(self, n, __tsplusTrace);

exports.dropRight = dropRight;
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