Angular 8 breaks legacy scripts

[mpgo13]

🐞 bug report

Is this a regression?

Yes, the previous version in which this bug was not present was: Angular 7.x

Description

Now with differential loading, angular runs all code within es6 modules in modern browsers. This breaks apps using legacy scripts (non es6 modules compatible).

🔬 Minimal Reproduction

1. git clone https://github.com/mpgo13/angular8-breaks-legacyscripts.git
2. cd angular8-breaks-legacyscripts
3. ng build && (cd dist/repro-app && python -m SimpleHTTPServer)
4. Browse to http://localhost:8000

Expected result:

• No script error

Actual result:

• Script error

UPDATE: Note: Works with ng serve as scripts are not loaded as es6 modules in that case.

[mpgo13]

I guess this was not meant to work or supported in Angular < 8.0.0 anyway. Legacy library has been replaced in our project. Feel free to close issue.

[gkalpak]

You could also set target to es5 in your tsconfig.json file to avoid that.

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