Build got failed while using 'ng build ---aot'

[kumaresan-subramani]

🐞 Bug report

Command (mark with an x)

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

Is this a regression?

NO

Description

I have set "target": "es6", when i try to serve my application using below command

ng serve ---aot

It throws below error:

If i change target to "es2015" and try to run using below commands

ng serve --prod

ng serve --aot

it throws a same error:

Working fine

When using "ng serve" with target es2015 and es6

And all commands are working fine with target as es5

🔬 Minimal Reproduction

1. Download sample
   angularIssue.zip

2. Run "npm i"

3. The give anyone command from below list:

   • ng serve --aot
   • ng build --aot
   • ng serve --prod
   • ng build --prod

🔥 Exception or Error

🌍 Your Environment

"@angular-devkit/build-angular": "^0.800.2",
"@angular-devkit/build-optimizer": "^0.800.2",
"@angular/cli": "~8.0.0",
"@angular/compiler-cli": "~8.0.0",

[alan-agius4]

At first it thought it was caused by Build Optimizer based on the above screenshots but it seems that it also fails when not using Build Optimizer.

[kumaresan-subramani]

Hi @alan-agius4 ,

While using Below three commands build-optimizer must be used

ng serve --aot
ng build ---prod

[alan-agius4]

-—aot doesn’t use build optimizer by default only —-prod does.

[kumaresan-subramani]

The same issue persists in the latest release also

"@angular/animations": "~8.1.0-next.2",
"@angular/common": "~8.1.0-next.2",
"@angular/compiler": "~8.1.0-next.2",
"@angular/core": "~8.1.0-next.2",
"@angular/forms": "~8.1.0-next.2",
"@angular/platform-browser": "~8.1.0-next.2",
"@angular/platform-browser-dynamic": "~8.1.0-next.2",
"@angular/router": "~8.1.0-next.2",

[kumaresan-subramani]

Hi @alan-agius4 ,

Reported issue got resolved in latest release version 8.2.0

[kumaresan-subramani]

HI @alan-agius4

Still I am facing same issue, can you please re-consider this issue.

Thanks.

[mgechev]

Looks like duplicate of #15392. Please provide minimal demo so we can reproduce the problem.

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