bug(moment-adapter): "_rollupMoment__default is not defined"

[kaito3desuyo]

(related with angular/angular#36248)

Reproduction

https://github.com/kaito3desuyo/angular-test

Steps to reproduce:

1. clone this repository
2. ng build --prod
3. npm i -g http-server
4. move root directory to dist/angular-test Folder
5. http-server
6. open http://localhost:8080

This issue only occurs with production builds.

Expected Behavior

Screen is displayed correctly

Actual Behavior

Screen goes blank with console error

Environment

• Angular: 9.1.0
• CDK/Material: 9.2.0
• Browser(s): Chrome 80.0.3987.149
• Operating System (e.g. Windows, macOS, Ubuntu): Windows 10 x64 1909 18363.720

[LanderBeeuwsaert]

I'm also using the moment-adapter so most probably the cause is the same.

[jnfaerch]

Edit: Noted wrong package :/

Can recreate with "@angular-devkit/build-angular": "~0.901.0"

"Resolved" with "@angular-devkit/build-angular": "~0.900.7"

[keserwan]

Same here, @jnfaerch suggestion worked.

[mgameover]

Same issue: main.95606efb9a87c022e413.js:1 Uncaught ReferenceError: _rollupMoment__default is not defined
@jnfaerch suggestion worked

[newargus]

Same Here:

[wasiddiqui]

facing the same issue
tried to build with @angular-devkit/build-angular": "~0.900.7" but not working

[mgameover]

@wasiddiqui, ~0.907.0 worked for me.
My project is using another lib, that was also built with ~0.901.0. once I've rebuilt that lib and my project, the issue has gone.
So you might need to check your dependencies.

[wasiddiqui]

MY ISSUE RESOLVED by workaround
Steps

1. Allow "allowSyntheticDefaultImport":true in tsconfig.json under compilerOptions.
2. Change "@angular-devkit/build-angular": "~0.901.0" to @angular-devkit/build-angular": "~0.900.7"
3. Import moment like this

---

import * as _moment from 'moment';
import { default as _rollupMoment } from 'moment';
const moment = _rollupMoment || _moment;

4. npm install
5. ng build

[blackholegalaxy]

ISSUE RESOLVED

Issue is not resolved, this is a workaround. We should'nt have to downgrade or change moment import.

[crisbeto]

I spent some time investigating it and it's most-likely an issue with build-angular like mentioned above. I've narrowed it down to somewhere between 0.900.3 and 0.901.0-next.4. The issue comes from the following lines:

var Jg = n("wd/R");
const Zg = _rollupMoment__default || Jg

Compared to the ones from a working version:

Ng = n("wd/R"),
Vg = n.n(Ng).a || Ng

I'm transferring the issue over to the correct repo.