The upgrade package duplicaes some of code due to relative
imports between entry-points. This caused bundlers to
inline shared functions twice in both FESM outputs.
This is an acceptable limitation and we are not changing this
because the primary entry-point is not synced into G3. It's non-trivial
to remove these cross relative imports right now because the primary
entry-point is not even built in G3 so instead we just ignore the
relative imports using a re-export file.
Note: To simplify this change, we continue using namespace exports
as exporting individual named exports for all these possible usages
is rather cumbersome and also we had existing namespace imports for
e.g. `angular1.ts`. The code of upgrade is rarely edited these days
PR Close#51500
Previously we had to share code between upgrade/dynamic and upgrade/static
by symlinking the `src` folder, which allowed both packages to access
the upgrade/common files.
These symlinks are always problematic on Windows, where we had to run
a script to re-link them, and restore them.
This change uses Bazel packages to share the `upgrade/common` code,
which avoids the need for symlinking the `src` folder.
Also, the Windows specific scripts that fixup the symlinks have also
been removed as there is no more need for them.
PR Close#29466
* Remove now unnecessary portions of build.
* Add a compilePackageES5 method to build ES5 from sources
* Rework all package.json and rollup config files to new format
* Remove "extends" from tsconfig-build.json files and fixup compilation roots
PR Close#18541
