ng xi18n fails with library which uses Ivy

[romko391]

🐞 Bug report

Command (mark with an x)

• new
• build
• serve
• test
• e2e
• generate
• add
• update
• lint
• [ X ] xi18n
• run
• config
• help
• version
• doc

Is this a regression?

No

Description

When running xi18n command on my application, that imports my library i get the following error:

ERROR: Unexpected value 'SharedModule in /Users/****/Code/my-app/dist/@shared/lib/shared.module.d.ts' imported by the module 'CoreModule in /Users/****/Code/my-app/libs/my-core/src/lib/core.module.ts'. Please add a @NgModule annotation.

But this is only happening when my lib is pre-build with Ivy option set to true, otherwise everything is fine.

A clear and concise description of the problem...

🔬 Minimal Reproduction

• ng new my-app
• ng g lib my-lib
• build my-lib
• import my-lib into my-apps module
• run ng xi18n for my-app

🔥 Exception or Error

`ERROR: Unexpected value 'SharedModule in /Users/****/Code/my-app/dist/@shared/lib/shared.module.d.ts' imported by the module 'CoreModule in /Users/****/Code/my-app/libs/my-core/src/lib/core.module.ts'. Please add a @NgModule annotation.`

🌍 Your Environment

`@angular/* version 9.0.0-rc-4 or 0.900.0-rc-4`

Anything else relevant?

Nope

[alan-agius4]

Can you try to build the library in prod mode prior to running ng xi18n?

i18n extraction still uses parts of the legacy compiler which require a library to be compiled using View Engine.

[romko391]

@alan-agius4 that's what i'm doing now. however, after reading docs about i18n working fine with Ivy i expected it to work fine in both, libs and apps.
btw. can we expect the fix to ship in final 9.0.0 version?

[alan-agius4]

We are targeting a fix for this in 9.1.0. There is already a draft PR in the framework side angular/angular#32912