Rollup failed: ... is not exported by

Ionic Framework ionic-v3
1

Current behavior:

I have a service which exports an interface named Post, and it is imported in several other files. When I run ionic build android --prod --release I get the error rollup failed: ‘Post’ is not exported by src/app/services/post.service.ts even though it is exported. This ends the build process.

Related code:

post.service.ts

export interface Post {...};
export interface PostTypes {...};
@Injectable()
export class PostService {...}

some.component.ts

import {Post, PostService} from "../../services/post.service";

Other information:

Cordova CLI: 6.5.0 
Ionic Framework Version: 2.3.0
Ionic CLI Version: 2.2.1
Ionic App Lib Version: 2.2.0
Ionic App Scripts Version: 1.1.4
ios-deploy version: Not installed
ios-sim version: Not installed
OS: Linux 4.10
Node Version: v7.7.3
Xcode version: Not installed

Stack trace:


[17:58:47]  rollup failed: 'Post' is not exported by src/app/services/post.service.ts 
[17:58:47]  ionic-app-script task: "build" 
[17:58:47]  Error: 'Post' is not exported by src/app/services/post.service.ts 
Error: 'Post' is not exported by src/app/services/post.service.ts
    at error (/home/derek/Documents/side_projects/x-mobile/node_modules/rollup/dist/rollup.js:170:12)
    at Module.error$1 [as error] (/home/derek/Documents/side_projects/x-mobile/node_modules/rollup/dist/rollup.js:7997:2)
    at Module.trace (/home/derek/Documents/side_projects/x-mobile/node_modules/rollup/dist/rollup.js:8095:9)
    at ModuleScope.findDeclaration (/home/derek/Documents/side_projects/x-mobile/node_modules/rollup/dist/rollup.js:7681:22)
    at Node.bind (/home/derek/Documents/side_projects/x-mobile/node_modules/rollup/dist/rollup.js:6733:29)
    at /home/derek/Documents/side_projects/x-mobile/node_modules/rollup/dist/rollup.js:5291:50
    at Node.eachChild (/home/derek/Documents/side_projects/x-mobile/node_modules/rollup/dist/rollup.js:5308:5)
    at Node.bind (/home/derek/Documents/side_projects/x-mobile/node_modules/rollup/dist/rollup.js:5291:7)
    at Node.bind (/home/derek/Documents/side_projects/x-mobile/node_modules/rollup/dist/rollup.js:7207:53)
    at /home/derek/Documents/side_projects/x-mobile/node_modules/rollup/dist/rollup.js:5291:50
1 Like
2

Having the same issue here. Did you solve it?

3

No I haven’t found a solution. You could try and convince the github issue maintainer that this is a real problem however: https://github.com/driftyco/ionic/issues/10914#issuecomment-289371311

4

Now would probably be a good time to contemplate ditching rollup for webpack, in order to prepare for taking advantage of lazy page loading in upcoming releases.

5

What is the recommended way to switch to webpack? I used the ionic cli to create my project, is there an upcoming release where the cli will utilize webpack?

6

Short answer: get rid of anything that says “rollup” in package.json. Webpack has been the default for a while now. Longer answer: ionic-app-scripts README.

7

I did actually have a rollup script running to enable dev/prod env variables, so getting rid of that and allowing ionic to revert to using webpack fixed the problem. Thanks!