Paul Gschwendtner c065f1b87a refactor: setup bundling for @angular/compiler-cli package (#43431) ...

All other frameworks packages are now using APF v13 and are strict
ESM packages. The compiler-cli does not use APF and is currently shipped
with its devmode ES5 CommonJS sources. This is problematic as CommonJS
cannot simply import from ECMAScript modules (like `@angular/compiler`).

To fix this we use a bundler that allows us to ship the compiler-cli as
a strict ESM package. Note: An ESM can import from an ESM without any
problems. This is what we need hre.

Unfortunatley we need a bundler here because converting the compiler-cli
to ESM is non-trivial as relative imports would need an explicit
`.js` extension. This work can be simplified by using a bundler that
avoids relative imports completely.

Note: This commit uses code-splitting to create multiple bundle
entry-points for `yarn ngc, `yarn ngcc` etc. This commit removed
the old `ivy-ngcc` entry-point that just printed an error message
(to reduce amount of bundles having to be configured).

PR Close #43431

2021-10-01 18:28:42 +00:00

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