73 lines
2.3 KiB
JavaScript
73 lines
2.3 KiB
JavaScript
import { empty } from './observable/empty';
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import { of } from './observable/of';
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import { throwError } from './observable/throwError';
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export var NotificationKind;
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(function (NotificationKind) {
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NotificationKind["NEXT"] = "N";
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NotificationKind["ERROR"] = "E";
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NotificationKind["COMPLETE"] = "C";
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})(NotificationKind || (NotificationKind = {}));
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export class Notification {
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constructor(kind, value, error) {
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this.kind = kind;
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this.value = value;
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this.error = error;
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this.hasValue = kind === 'N';
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}
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observe(observer) {
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switch (this.kind) {
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case 'N':
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return observer.next && observer.next(this.value);
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case 'E':
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return observer.error && observer.error(this.error);
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case 'C':
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return observer.complete && observer.complete();
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}
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}
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do(next, error, complete) {
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const kind = this.kind;
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switch (kind) {
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case 'N':
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return next && next(this.value);
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case 'E':
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return error && error(this.error);
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case 'C':
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return complete && complete();
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}
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}
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accept(nextOrObserver, error, complete) {
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if (nextOrObserver && typeof nextOrObserver.next === 'function') {
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return this.observe(nextOrObserver);
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}
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else {
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return this.do(nextOrObserver, error, complete);
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}
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}
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toObservable() {
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const kind = this.kind;
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switch (kind) {
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case 'N':
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return of(this.value);
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case 'E':
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return throwError(this.error);
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case 'C':
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return empty();
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}
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throw new Error('unexpected notification kind value');
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}
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static createNext(value) {
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if (typeof value !== 'undefined') {
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return new Notification('N', value);
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}
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return Notification.undefinedValueNotification;
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}
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static createError(err) {
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return new Notification('E', undefined, err);
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}
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static createComplete() {
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return Notification.completeNotification;
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}
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}
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Notification.completeNotification = new Notification('C');
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Notification.undefinedValueNotification = new Notification('N', undefined);
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//# sourceMappingURL=Notification.js.map
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