fix(core): remove static dependency from @angular/core to @angular/compiler

[mhevery]

With Ivy we need @Component decorator to compile the component. For this reason @Component depends on @angular/compiler. We expect that the the compiler will than be tree-shaken away as part of the production build.

Unfortunately the @angular/compiler is large enough that the mare act of parsing and loading (even if not executing) is causing negative build time regression. This change fixes this by making the dependency between @Component decorator and @angular/compiler to be late bound (runtime) rather than statically bound (compile time).

This means that for JIT mode it is not sufficient to just load @angular/core to have @angular/compiler loaded. Instead it is necessary to load @angular/compiler either explicitly or implicitly thought @angular/platform-browser-dynamic.

[mary-poppins]

You can preview 8f6091c at https://pr26734-8f6091c.ngbuilds.io/.

[alan-agius4]

Should the peerDependency for compiler be dropped?

angular/packages/core/package.json

Line 19 in 9dc52d9

"@angular/compiler": "0.0.0-PLACEHOLDER",

[IgorMinar]

some changes requested but the rest looks good.

[alxhub]

Very cool! A few minor comments.

[alexeagle]

Can this PR be merged to patch and go out in the next 7.0.x release? Otherwise CLI needs to do more work to compensate.

[mary-poppins]

You can preview 9ad8478 at https://pr26734-9ad8478.ngbuilds.io/.

[mary-poppins]

You can preview c0b56ff at https://pr26734-c0b56ff.ngbuilds.io/.

[mary-poppins]

You can preview 57f3dec at https://pr26734-57f3dec.ngbuilds.io/.

Concernes addressed.

[mary-poppins]

You can preview 63b9af5 at https://pr26734-63b9af5.ngbuilds.io/.

[mhevery]

http://test/OCL:219198443:BASE:219198494:1540850096541:6a343517

[mary-poppins]

You can preview 98f38b6 at https://pr26734-98f38b6.ngbuilds.io/.

[mhevery]

http://test/OCL:219198443:BASE:219325227:1540921167060:d9fb4894

[mary-poppins]

You can preview 8cf90f4 at https://pr26734-8cf90f4.ngbuilds.io/.

[mary-poppins]

You can preview 5d257f6 at https://pr26734-5d257f6.ngbuilds.io/.

[mhevery]

http://test/OCL:219198443:BASE:219365318:1540934567758:ee4f97b

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