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✏️ Editing: sequenceEqual.js Writable

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.sequenceEqual = void 0;
var lift_1 = require("../util/lift");
var OperatorSubscriber_1 = require("./OperatorSubscriber");
var innerFrom_1 = require("../observable/innerFrom");
function sequenceEqual(compareTo, comparator) {
    if (comparator === void 0) { comparator = function (a, b) { return a === b; }; }
    return lift_1.operate(function (source, subscriber) {
        var aState = createState();
        var bState = createState();
        var emit = function (isEqual) {
            subscriber.next(isEqual);
            subscriber.complete();
        };
        var createSubscriber = function (selfState, otherState) {
            var sequenceEqualSubscriber = OperatorSubscriber_1.createOperatorSubscriber(subscriber, function (a) {
                var buffer = otherState.buffer, complete = otherState.complete;
                if (buffer.length === 0) {
                    complete ? emit(false) : selfState.buffer.push(a);
                }
                else {
                    !comparator(a, buffer.shift()) && emit(false);
                }
            }, function () {
                selfState.complete = true;
                var complete = otherState.complete, buffer = otherState.buffer;
                complete && emit(buffer.length === 0);
                sequenceEqualSubscriber === null || sequenceEqualSubscriber === void 0 ? void 0 : sequenceEqualSubscriber.unsubscribe();
            });
            return sequenceEqualSubscriber;
        };
        source.subscribe(createSubscriber(aState, bState));
        innerFrom_1.innerFrom(compareTo).subscribe(createSubscriber(bState, aState));
    });
}
exports.sequenceEqual = sequenceEqual;
function createState() {
    return {
        buffer: [],
        complete: false,
    };
}
//# sourceMappingURL=sequenceEqual.js.map

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