wed/standalone/lib/external/rxjs/internal/operators/throwIfEmpty.js

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define(function(require,exports,module){

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var tap_1 = require("./tap");
var EmptyError_1 = require("../util/EmptyError");
/**
 * If the source observable completes without emitting a value, it will emit
 * an error. The error will be created at that time by the optional
 * `errorFactory` argument, otherwise, the error will be {@link ErrorEmpty}.
 *
 * @example
 *
 * const click$ = fromEvent(button, 'click');
 *
 * clicks$.pipe(
 *   takeUntil(timer(1000)),
 *   throwIfEmpty(
 *     () => new Error('the button was not clicked within 1 second')
 *   ),
 * )
 * .subscribe({
 *   next() { console.log('The button was clicked'); },
 *   error(err) { console.error(err); },
 * });
 * @param {Function} [errorFactory] A factory function called to produce the
 * error to be thrown when the source observable completes without emitting a
 * value.
 */
exports.throwIfEmpty = function (errorFactory) {
    if (errorFactory === void 0) { errorFactory = defaultErrorFactory; }
    return tap_1.tap({
        hasValue: false,
        next: function () { this.hasValue = true; },
        complete: function () {
            if (!this.hasValue) {
                throw errorFactory();
            }
        }
    });
};
function defaultErrorFactory() {
    return new EmptyError_1.EmptyError();
}
//# sourceMappingURL=throwIfEmpty.js.map
return module.exports;

});