70 lines
2.5 KiB
JavaScript
70 lines
2.5 KiB
JavaScript
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"use strict";
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var root_1 = require('./root');
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var isArray_1 = require('./isArray');
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var isPromise_1 = require('./isPromise');
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var Observable_1 = require('../Observable');
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var SymbolShim_1 = require('../util/SymbolShim');
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var InnerSubscriber_1 = require('../InnerSubscriber');
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function subscribeToResult(outerSubscriber, result, outerValue, outerIndex) {
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var destination = new InnerSubscriber_1.InnerSubscriber(outerSubscriber, outerValue, outerIndex);
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if (destination.isUnsubscribed) {
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return;
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}
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if (result instanceof Observable_1.Observable) {
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if (result._isScalar) {
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destination.next(result.value);
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destination.complete();
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return;
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}
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else {
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return result.subscribe(destination);
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}
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}
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if (isArray_1.isArray(result)) {
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for (var i = 0, len = result.length; i < len && !destination.isUnsubscribed; i++) {
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destination.next(result[i]);
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}
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if (!destination.isUnsubscribed) {
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destination.complete();
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}
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}
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else if (isPromise_1.isPromise(result)) {
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result.then(function (value) {
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if (!destination.isUnsubscribed) {
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destination.next(value);
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destination.complete();
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}
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}, function (err) { return destination.error(err); })
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.then(null, function (err) {
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// Escaping the Promise trap: globally throw unhandled errors
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root_1.root.setTimeout(function () { throw err; });
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});
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return destination;
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}
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else if (typeof result[SymbolShim_1.SymbolShim.iterator] === 'function') {
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for (var _i = 0, result_1 = result; _i < result_1.length; _i++) {
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var item = result_1[_i];
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destination.next(item);
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if (destination.isUnsubscribed) {
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break;
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}
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}
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if (!destination.isUnsubscribed) {
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destination.complete();
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}
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}
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else if (typeof result[SymbolShim_1.SymbolShim.observable] === 'function') {
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var obs = result[SymbolShim_1.SymbolShim.observable]();
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if (typeof obs.subscribe !== 'function') {
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destination.error('invalid observable');
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}
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else {
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return obs.subscribe(new InnerSubscriber_1.InnerSubscriber(outerSubscriber, outerValue, outerIndex));
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}
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}
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else {
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destination.error(new TypeError('unknown type returned'));
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}
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}
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exports.subscribeToResult = subscribeToResult;
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//# sourceMappingURL=subscribeToResult.js.map
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