bufferCount.js 3.56 KB
"use strict";
var __values = (this && this.__values) || function(o) {
    var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
    if (m) return m.call(o);
    if (o && typeof o.length === "number") return {
        next: function () {
            if (o && i >= o.length) o = void 0;
            return { value: o && o[i++], done: !o };
        }
    };
    throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.bufferCount = void 0;
var lift_1 = require("../util/lift");
var OperatorSubscriber_1 = require("./OperatorSubscriber");
var arrRemove_1 = require("../util/arrRemove");
function bufferCount(bufferSize, startBufferEvery) {
    if (startBufferEvery === void 0) { startBufferEvery = null; }
    startBufferEvery = startBufferEvery !== null && startBufferEvery !== void 0 ? startBufferEvery : bufferSize;
    return lift_1.operate(function (source, subscriber) {
        var buffers = [];
        var count = 0;
        source.subscribe(OperatorSubscriber_1.createOperatorSubscriber(subscriber, function (value) {
            var e_1, _a, e_2, _b;
            var toEmit = null;
            if (count++ % startBufferEvery === 0) {
                buffers.push([]);
            }
            try {
                for (var buffers_1 = __values(buffers), buffers_1_1 = buffers_1.next(); !buffers_1_1.done; buffers_1_1 = buffers_1.next()) {
                    var buffer = buffers_1_1.value;
                    buffer.push(value);
                    if (bufferSize <= buffer.length) {
                        toEmit = toEmit !== null && toEmit !== void 0 ? toEmit : [];
                        toEmit.push(buffer);
                    }
                }
            }
            catch (e_1_1) { e_1 = { error: e_1_1 }; }
            finally {
                try {
                    if (buffers_1_1 && !buffers_1_1.done && (_a = buffers_1.return)) _a.call(buffers_1);
                }
                finally { if (e_1) throw e_1.error; }
            }
            if (toEmit) {
                try {
                    for (var toEmit_1 = __values(toEmit), toEmit_1_1 = toEmit_1.next(); !toEmit_1_1.done; toEmit_1_1 = toEmit_1.next()) {
                        var buffer = toEmit_1_1.value;
                        arrRemove_1.arrRemove(buffers, buffer);
                        subscriber.next(buffer);
                    }
                }
                catch (e_2_1) { e_2 = { error: e_2_1 }; }
                finally {
                    try {
                        if (toEmit_1_1 && !toEmit_1_1.done && (_b = toEmit_1.return)) _b.call(toEmit_1);
                    }
                    finally { if (e_2) throw e_2.error; }
                }
            }
        }, function () {
            var e_3, _a;
            try {
                for (var buffers_2 = __values(buffers), buffers_2_1 = buffers_2.next(); !buffers_2_1.done; buffers_2_1 = buffers_2.next()) {
                    var buffer = buffers_2_1.value;
                    subscriber.next(buffer);
                }
            }
            catch (e_3_1) { e_3 = { error: e_3_1 }; }
            finally {
                try {
                    if (buffers_2_1 && !buffers_2_1.done && (_a = buffers_2.return)) _a.call(buffers_2);
                }
                finally { if (e_3) throw e_3.error; }
            }
            subscriber.complete();
        }, undefined, function () {
            buffers = null;
        }));
    });
}
exports.bufferCount = bufferCount;
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