wishthis/node_modules/rxjs/internal/Observable.js
2022-01-21 09:28:41 +01:00

117 lines
No EOL
4 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var canReportError_1 = require("./util/canReportError");
var toSubscriber_1 = require("./util/toSubscriber");
var observable_1 = require("./symbol/observable");
var pipe_1 = require("./util/pipe");
var config_1 = require("./config");
var Observable = (function () {
function Observable(subscribe) {
this._isScalar = false;
if (subscribe) {
this._subscribe = subscribe;
}
}
Observable.prototype.lift = function (operator) {
var observable = new Observable();
observable.source = this;
observable.operator = operator;
return observable;
};
Observable.prototype.subscribe = function (observerOrNext, error, complete) {
var operator = this.operator;
var sink = toSubscriber_1.toSubscriber(observerOrNext, error, complete);
if (operator) {
sink.add(operator.call(sink, this.source));
}
else {
sink.add(this.source || (config_1.config.useDeprecatedSynchronousErrorHandling && !sink.syncErrorThrowable) ?
this._subscribe(sink) :
this._trySubscribe(sink));
}
if (config_1.config.useDeprecatedSynchronousErrorHandling) {
if (sink.syncErrorThrowable) {
sink.syncErrorThrowable = false;
if (sink.syncErrorThrown) {
throw sink.syncErrorValue;
}
}
}
return sink;
};
Observable.prototype._trySubscribe = function (sink) {
try {
return this._subscribe(sink);
}
catch (err) {
if (config_1.config.useDeprecatedSynchronousErrorHandling) {
sink.syncErrorThrown = true;
sink.syncErrorValue = err;
}
if (canReportError_1.canReportError(sink)) {
sink.error(err);
}
else {
console.warn(err);
}
}
};
Observable.prototype.forEach = function (next, promiseCtor) {
var _this = this;
promiseCtor = getPromiseCtor(promiseCtor);
return new promiseCtor(function (resolve, reject) {
var subscription;
subscription = _this.subscribe(function (value) {
try {
next(value);
}
catch (err) {
reject(err);
if (subscription) {
subscription.unsubscribe();
}
}
}, reject, resolve);
});
};
Observable.prototype._subscribe = function (subscriber) {
var source = this.source;
return source && source.subscribe(subscriber);
};
Observable.prototype[observable_1.observable] = function () {
return this;
};
Observable.prototype.pipe = function () {
var operations = [];
for (var _i = 0; _i < arguments.length; _i++) {
operations[_i] = arguments[_i];
}
if (operations.length === 0) {
return this;
}
return pipe_1.pipeFromArray(operations)(this);
};
Observable.prototype.toPromise = function (promiseCtor) {
var _this = this;
promiseCtor = getPromiseCtor(promiseCtor);
return new promiseCtor(function (resolve, reject) {
var value;
_this.subscribe(function (x) { return value = x; }, function (err) { return reject(err); }, function () { return resolve(value); });
});
};
Observable.create = function (subscribe) {
return new Observable(subscribe);
};
return Observable;
}());
exports.Observable = Observable;
function getPromiseCtor(promiseCtor) {
if (!promiseCtor) {
promiseCtor = config_1.config.Promise || Promise;
}
if (!promiseCtor) {
throw new Error('no Promise impl found');
}
return promiseCtor;
}
//# sourceMappingURL=Observable.js.map