rxjs
Version:
Reactive Extensions for modern JavaScript
73 lines • 3.5 kB
JavaScript
;
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.ReplaySubject = void 0;
var Subject_1 = require("./Subject");
var dateTimestampProvider_1 = require("./scheduler/dateTimestampProvider");
var ReplaySubject = (function (_super) {
__extends(ReplaySubject, _super);
function ReplaySubject(bufferSize, windowTime, timestampProvider) {
if (bufferSize === void 0) { bufferSize = Infinity; }
if (windowTime === void 0) { windowTime = Infinity; }
if (timestampProvider === void 0) { timestampProvider = dateTimestampProvider_1.dateTimestampProvider; }
var _this = _super.call(this) || this;
_this.bufferSize = bufferSize;
_this.windowTime = windowTime;
_this.timestampProvider = timestampProvider;
_this.buffer = [];
_this.infiniteTimeWindow = true;
_this.infiniteTimeWindow = windowTime === Infinity;
_this.bufferSize = Math.max(1, bufferSize);
_this.windowTime = Math.max(1, windowTime);
return _this;
}
ReplaySubject.prototype.next = function (value) {
var _a = this, isStopped = _a.isStopped, buffer = _a.buffer, infiniteTimeWindow = _a.infiniteTimeWindow, timestampProvider = _a.timestampProvider, windowTime = _a.windowTime;
if (!isStopped) {
buffer.push(value);
!infiniteTimeWindow && buffer.push(timestampProvider.now() + windowTime);
}
this.trimBuffer();
_super.prototype.next.call(this, value);
};
ReplaySubject.prototype._subscribe = function (subscriber) {
this._throwIfClosed();
this.trimBuffer();
var subscription = this._innerSubscribe(subscriber);
var _a = this, infiniteTimeWindow = _a.infiniteTimeWindow, buffer = _a.buffer;
var copy = buffer.slice();
for (var i = 0; i < copy.length && !subscriber.closed; i += infiniteTimeWindow ? 1 : 2) {
subscriber.next(copy[i]);
}
this._checkFinalizedStatuses(subscriber);
return subscription;
};
ReplaySubject.prototype.trimBuffer = function () {
var _a = this, bufferSize = _a.bufferSize, timestampProvider = _a.timestampProvider, buffer = _a.buffer, infiniteTimeWindow = _a.infiniteTimeWindow;
var adjustedBufferSize = (infiniteTimeWindow ? 1 : 2) * bufferSize;
bufferSize < Infinity && adjustedBufferSize < buffer.length && buffer.splice(0, buffer.length - adjustedBufferSize);
if (!infiniteTimeWindow) {
var now = timestampProvider.now();
var last = 0;
for (var i = 1; i < buffer.length && buffer[i] <= now; i += 2) {
last = i;
}
last && buffer.splice(0, last + 1);
}
};
return ReplaySubject;
}(Subject_1.Subject));
exports.ReplaySubject = ReplaySubject;
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