15 lines
410 B
TypeScript
15 lines
410 B
TypeScript
/**
|
|
* @license
|
|
* Copyright Google Inc. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by an MIT-style license that can be
|
|
* found in the LICENSE file at https://angular.io/license
|
|
*/
|
|
|
|
export function supportFeature(Observable: any, method: string) {
|
|
const func = function() {
|
|
return !!Observable.prototype[method];
|
|
};
|
|
(func as any).message = `Observable.${method} not support`;
|
|
}
|