"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.mapAccum = exports.mapAccum_ = void 0;
// ets_tracing: off
const CK = __importStar(require("../../../../Collections/Immutable/Chunk"));
const CH = __importStar(require("../../Channel"));
const C = __importStar(require("../core"));
/**
 * Statefully maps over the elements of this stream to produce new elements.
 */
function mapAccum_(self, s, f) {
    const accumulator = (currS) => CH.readWith((in_) => {
        const { tuple: [nextS, a2s] } = CK.mapAccum_(in_, currS, f);
        return CH.zipRight_(CH.write(a2s), accumulator(nextS));
    }, (err) => CH.fail(err), (_) => CH.unit);
    return new C.Stream(self.channel[">>>"](accumulator(s)));
}
exports.mapAccum_ = mapAccum_;
/**
 * Statefully maps over the elements of this stream to produce new elements.
 *
 * @ets_data_first mapAccum_
 */
function mapAccum(s, f) {
    return (self) => mapAccum_(self, s, f);
}
exports.mapAccum = mapAccum;
//# sourceMappingURL=mapAccum.js.map