Update compiler_host.ts (Fix for #3847)

[jdavidls]

The problem: duplication of symlinked source files (npm linked sources) in CompilerHost's stats.
The solution: resolve these paths before of all

It's my gift of kings :)

Fix #3847

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[timofeysie]

What is the status of this PR? I am getting this error when trying to use an npm link lib in my Ionic 2 project:

undefined is not a constructor (evaluating 'new __WEBPACK_IMPORTED_MODULE_8_shared_lib__

Will this PR fix the issue?

[jdavidls]

Hi @timofeysie.

This PR fix the building errors described in #3847 (I made a mistake by labeling #3875),
Where npm linked libraries with same dependencies are duplicated, It's solves the «Type 'XXX' is not assignable to type 'XXX» compilation errors, where XXX are the same type declares in the same source file, but resolved by different symlink.

The only thing that does this PR is to resolve all the symlinked source files before to passing them to the compiler.

The issue you are describing seems to be something different.

Sorry, i'm a disinterested contributor, i think that I can not help you much.

[filipesilva]

@hansl can you review?

[Bbbrinks]

Any update on this? Is there any way I could help to fix the failing checks?

[BernhardRode]

@sterfpaul the whole file got refactored/moved ... i tried to find the place, where this could fit, too... but had no luck....

[Bbbrinks]

@BernhardRode Seems about the same to me on current master.

[filipesilva]

Closing as something similar has already been added.

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