升级Angular项目至最新版本后，RxJS Subscription导出成员缺失问题求助

云原生阿岚

2026-5-26

Fixing "rxjs/Subscription has no exported member 'Subscription'" in Angular 6

Hey there, I’ve run into this exact snag when upgrading to Angular 6, so let’s walk through how to fix it step by step.

Why This Happens

Angular 6 ships with RxJS 6.x, which introduced breaking changes to import paths. The old way of importing core RxJS types like Subscription was completely deprecated and removed in this version—so your code is looking for a file structure that no longer exists.

Step 1: Make Sure You’re on the Right RxJS Version

First, check your package.json to confirm you have the correct RxJS version paired with Angular 6. You need RxJS 6.0.0 or higher. If it’s missing or outdated, install it via npm:

npm install rxjs@6.3.3 --save

(6.3.3 is the stable, recommended version for Angular 6, but any 6.x release will work)

Step 2: Update Your Import Statements

The core fix is adjusting how you import Subscription. Replace every instance of this old import:

import { Subscription } from 'rxjs/Subscription';

With this new syntax:

import { Subscription } from 'rxjs';

This same rule applies to other core RxJS types like Observable, Subject, or BehaviorSubject—all now import directly from the root rxjs package.

Optional: Temporary Compatibility with rxjs-compat

If you have a massive codebase and can’t update all imports at once, you can install the rxjs-compat package to bridge the gap between RxJS 5 and 6 syntax:

npm install rxjs-compat@6.3.3 --save

Just note this is a short-term workaround—rxjs-compat isn’t meant for long-term use, so plan to migrate to the new import syntax as soon as you can.