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, [UpgradeModule#bootstrap()][1], while being a replacement
for and accepting the same arguments as [angular.bootstrap()][2], did
not return the same value as `angular.bootstrap()` (i.e. the AngularJS
injector in most cases). This made it less straight forward to migrate
some usecases that relied on the return value of `.bootstrap()`. The
work-around was to access the injector via [UpgradeModule#$injector][3]
(after the app had been bootstrapped with `UpgradeModule#bootstrap()`).
This commit addresses this by ensuring `UpgradeModule#bootstrap()`
returns the same value as `angular.bootstrap()`, making it easier to
replace the latter with the former.
[1]: https://angular.io/api/upgrade/static/UpgradeModule#bootstrap
[2]: https://docs.angularjs.org/api/ng/function/angular.bootstrap
[3]: https://angular.io/api/upgrade/static/UpgradeModule#%24injectorFixes#46211
PR Close#46214
DEPRECATED:
The `downgradeModule` function calls with NgModule factories are deprecated. Please use NgModule class based `downgradeModule` calls instead.
PR Close#44090
This commit extends the logic of the `downgradeModule` function to support NgModule class as an argument. This is needed to simplify the API surface to avoid the need to resolve NgModule factory before invoking the `downgradeModule` method.
PR Close#43973
Remove `looseIdentical` implementation and instead use the ES2015 `Object.is` in its place.
They behave exactly the same way except for `+0`/`-0`.
`looseIdentical(+0, -0)` => `true`
`Object.is(+0, -0)` => `false`
Other than the difference noted above, this is not be a breaking change because:
1. `looseIdentical` is a private API
2. ES2015 is listed as a mandatory polyfill in the [browser support
guide](https://angular.io/guide/browser-support#mandatory-polyfills)
3. Also note that `Ivy` already uses `Object.is` in `bindingUpdated`.
PR Close#37191
Previously, under certain circumstances, `NgZone#onMicrotaskEmpty` could
emit while a `$digest` was in progress, thus triggering another
`$digest`, which in turn would throw a `$digest already in progress`
error. Furthermore, throwing an error from inside the `onMicrotaskEmpty`
subscription would result in unsubscribing and stop triggering further
`$digest`s, when `onMicrotaskEmpty` emitted.
Usually, emitting while a `$digest` was already in progress was a result
of unintentionally running some part of AngularJS outside the Angular
zone, but there are valid (if rare) usecases where this can happen
(see #24680 for details).
This commit addresses the issue as follows:
- If a `$digest` is in progress when `onMicrotaskEmpty` emits, do not
trigger another `$digest` (to avoid the error). `$evalAsync()` is used
instead, to ensure that the bindings are evaluated at least once more.
- Since there is still a high probability that the situation is a result
of programming error (i.e. some AngularJS part running outside the
Angular Zone), a warning will be logged, but only if the app is in
[dev mode][1].
[1]: https://github.com/angular/angular/blob/78146c189/packages/core/src/util/ng_dev_mode.ts#L12Fixes#24680
PR Close#29794
When targeting ES2015 (as is the default in cli@8), `const` is not
downleveled to `var` and thus declaring `const module` throws an error
due to webpack wrapping the code in a function call with a `module`
argument (even when compiling for the `web` environment).
Related: webpack/webpack#7369
Fixes#30050
PR Close#30058
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
