Subresource Integrity for lazy modules is broken when DL is enabled

[alan-agius4]

🐞 Bug report

Command (mark with an x)

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

Is this a regression?

Yes, this is caused by the downleveling process.

Description

🔬 Minimal Reproduction

ng new lazy-loading-dl --routing
cd lazy-loading-dl
ng g m foo --module app.module --route foo

Add the below in app.component.html

<a [routerLink]="['/foo']" >
  link to foo
</a>

ng build --prod --subresourceIntegrity
http-server dist/lazy-loading-dl

Open browser and click on the link

🔥 Exception or Error

127.0.0.1/:1 Failed to find a valid digest in the 'integrity' attribute for resource 'http://127.0.0.1:8080/5-es2015.0914cd2e5d35cddfa66f.js' with computed SHA-256 integrity '9yuul7bmARNSj/M5wygxgYjfklmwN0bTD+8YGHdn5/I='. The resource has been blocked.
main-es2015.8ce6a89e85cdffc26eb1.js:1 ERROR Error: Uncaught (in promise): ChunkLoadError: Loading chunk 5 failed.
(error: http://127.0.0.1:8080/5-es2015.0914cd2e5d35cddfa66f.js)
ChunkLoadError: Loading chunk 5 failed.
(error: http://127.0.0.1:8080/5-es2015.0914cd2e5d35cddfa66f.js)
    at Function.u.e (runtime-es2015.6b58afc9912521e9b6e5.js:1)
    at w (main-es2015.8ce6a89e85cdffc26eb1.js:1)
    at Rn.loadModuleFactory (main-es2015.8ce6a89e85cdffc26eb1.js:1)
    at Rn.load (main-es2015.8ce6a89e85cdffc26eb1.js:1)
    at c.project (main-es2015.8ce6a89e85cdffc26eb1.js:1)
    at c._tryNext (main-es2015.8ce6a89e85cdffc26eb1.js:1)
    at c._next (main-es2015.8ce6a89e85cdffc26eb1.js:1)
    at c.next (main-es2015.8ce6a89e85cdffc26eb1.js:1)
    at e._subscribe (main-es2015.8ce6a89e85cdffc26eb1.js:1)
    at e._trySubscribe (main-es2015.8ce6a89e85cdffc26eb1.js:1)
    at P (polyfills-es2015.fd917e7c3ed57f282ee5.js:1)
    at P (polyfills-es2015.fd917e7c3ed57f282ee5.js:1)
    at polyfills-es2015.fd917e7c3ed57f282ee5.js:1
    at a.invokeTask (polyfills-es2015.fd917e7c3ed57f282ee5.js:1)
    at Object.onInvokeTask (main-es2015.8ce6a89e85cdffc26eb1.js:1)
    at a.invokeTask (polyfills-es2015.fd917e7c3ed57f282ee5.js:1)
    at s.runTask (polyfills-es2015.fd917e7c3ed57f282ee5.js:1)
    at _ (polyfills-es2015.fd917e7c3ed57f282ee5.js:1)
    at c.invokeTask [as invoke] (polyfills-es2015.fd917e7c3ed57f282ee5.js:1)
    at y (polyfills-es2015.fd917e7c3ed57f282ee5.js:1)

🌍 Your Environment

Angular CLI: 8.3.0
Node: 10.10.0
OS: win32 x64
Angular: 8.2.3
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.803.0
@angular-devkit/build-angular     0.803.0
@angular-devkit/build-optimizer   0.803.0
@angular-devkit/build-webpack     0.803.0
@angular-devkit/core              8.3.0
@angular-devkit/schematics        8.3.0
@angular/cli                      8.3.0
@ngtools/webpack                  8.3.0
@schematics/angular               8.3.0
@schematics/update                0.803.0
rxjs                              6.4.0
typescript                        3.5.3
webpack                           4.39.2

Anything else relevant?

[aaronte]

+1