Angular compiler plugin not reporting some cases of not finding an entry module

[mascarenhas]

The three lines starting at

angular-cli/packages/ngtools/webpack/src/entry_resolver.ts

Line 155 in b403aa6

if (bootstrap.length != 1) {

are bailing out without throwing the error at the end of resolveEntryModuleFromMain, which causes the build to proceed silently but generate bundles that actually fail at runtime. This should probably throw the same error.

[alan-agius4]

Can you setup a minimal repro please when this should error out?

You can read here why this is needed. A good way to make a minimal repro is to create a new app via ng new repro-app and adding the minimum possible code to show the problem. Then you can push this repository to github and link it here.

[mascarenhas]

Done, please check this repo. If you go main.ts and swap the custom bootstrap code for the standard one the lazily loaded route works and shows repro works! in the home page. With the custom bootstrap code the lazily-loaded chunk does not get compiled, the message does not show up, and the following error appears in the console:

ERROR Error: Uncaught (in promise): Error: Cannot find module './repro/repro.module'
Error: Cannot find module './repro/repro.module'
    at $_lazy_route_resource lazy namespace object:5
    at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (zone.js:388)
    at Object.onInvoke (core.js:3824)
    at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (zone.js:387)
    at Zone.push../node_modules/zone.js/dist/zone.js.Zone.run (zone.js:138)
    at zone.js:872
    at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:421)
    at Object.onInvokeTask (core.js:3815)
    at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:420)
    at Zone.push../node_modules/zone.js/dist/zone.js.Zone.runTask (zone.js:188)
    at $_lazy_route_resource lazy namespace object:5
    at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (zone.js:388)
    at Object.onInvoke (core.js:3824)
    at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (zone.js:387)
    at Zone.push../node_modules/zone.js/dist/zone.js.Zone.run (zone.js:138)
    at zone.js:872
    at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:421)
    at Object.onInvokeTask (core.js:3815)
    at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:420)
    at Zone.push../node_modules/zone.js/dist/zone.js.Zone.runTask (zone.js:188)
    at resolvePromise (zone.js:814)
    at resolvePromise (zone.js:771)
    at zone.js:873
    at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:421)
    at Object.onInvokeTask (core.js:3815)
    at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:420)
    at Zone.push../node_modules/zone.js/dist/zone.js.Zone.runTask (zone.js:188)
    at drainMicroTaskQueue (zone.js:595)

[alan-agius4]

Hi, I had a look at your reproduction however in your main.ts I can only find the standard bootstrap code.

https://github.com/mascarenhas/angular-cli-issue-12238-repro/blob/d86782acff4eef3cf730517194c6b7c057f9710b/src/main.ts#L1-L12