70 lines
2.7 KiB
JavaScript
70 lines
2.7 KiB
JavaScript
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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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import { isFunction } from './util/isFunction';
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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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return observeNotification(this, observer);
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}
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do(nextHandler, errorHandler, completeHandler) {
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const { kind, value, error } = this;
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return kind === 'N' ? nextHandler === null || nextHandler === void 0 ? void 0 : nextHandler(value) : kind === 'E' ? errorHandler === null || errorHandler === void 0 ? void 0 : errorHandler(error) : completeHandler === null || completeHandler === void 0 ? void 0 : completeHandler();
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}
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accept(nextOrObserver, error, complete) {
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var _a;
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return isFunction((_a = nextOrObserver) === null || _a === void 0 ? void 0 : _a.next)
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? this.observe(nextOrObserver)
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: this.do(nextOrObserver, error, complete);
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}
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toObservable() {
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const { kind, value, error } = this;
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const result = kind === 'N'
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?
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of(value)
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:
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kind === 'E'
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?
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throwError(() => error)
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:
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kind === 'C'
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?
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EMPTY
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:
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0;
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if (!result) {
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throw new TypeError(`Unexpected notification kind ${kind}`);
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}
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return result;
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}
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static createNext(value) {
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return new Notification('N', value);
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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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export function observeNotification(notification, observer) {
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var _a, _b, _c;
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const { kind, value, error } = notification;
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if (typeof kind !== 'string') {
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throw new TypeError('Invalid notification, missing "kind"');
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}
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kind === 'N' ? (_a = observer.next) === null || _a === void 0 ? void 0 : _a.call(observer, value) : kind === 'E' ? (_b = observer.error) === null || _b === void 0 ? void 0 : _b.call(observer, error) : (_c = observer.complete) === null || _c === void 0 ? void 0 : _c.call(observer);
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}
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//# sourceMappingURL=Notification.js.map
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