Previously, the relative order of the AngularJS compiling/linking operations was
not similar to AngularJS's, resulting in inconsistent behavior for upgraded
components (which made upgrading to Angular less straight forward).
This commit fixes it, by following the compiling/linking process of AngularJS
more closely.
Main differences:
- The components view is already populated when the controller is instantiated
(and subsequent hooks are called).
- The correct DOM content is available when running the `$onChanges`, `$onInit`,
`$doCheck` hooks. Previously, the "content children" were still present, not
the "view children".
- The same for pre-linking.
- The template is compiled in the correct DOM context (e.g. has access to
ancestors). Previously, it was compiled in isolation, inside a dummy element.
For reference, here is the order of operations:
**Before**
1. Compile template
2. Instantiate controller
3. Hook: $onChanges
4. Hook: $onInit
5. Hook: $doCheck
6. Pre-linking
7. Collect content children
8. Insert compiled template
9. Linking
10. Post-linking
11. Hook: $postLink
**After**
1. Collect content children
2. Insert template
3. Compile template
4. Instantiate controller
5. Hook: $onChanges
6. Hook: $onInit
7. Hook: $doCheck
8. Pre-linking
9. Linking
10. Post-linking
11. Hook: $postLink
Fixes#13912
TypeScript compiler will now build to ES2015 code and modules. Babili is used to minify ES2015
code, providing an initial optimization that we couldn't previously get just from Uglify. Uses
Babel to convert ES2015 to UMD/ES5 code, and Uglify to minimize the output.
Note that the duplication in tsconfig.json files will be fixed in a followup CL now that we have tsconfig inheritance
BREAKING CHANGE: Angular 4 will support only TypeScript 2.1, so we no longer provide backwards compatibility to TS 1.8.
Subclassing errors is problematic since Error returns a
new instance. All of the patching which we do than prevent
proper application of source maps.
PR Close#14160
Previously, the `previousValue` and `currentValue` arguments passed to the
`SimpleChange` constructor were swapped for interpolation bindings.
This commit also refactors the code, so that interpolation bindings and property
bindings share the same implementation, and fixes some broken tests (that hide
failures by allowing the `$exceptionHandler` to swallow thrown exceptions).
PR Close#14301
Correctly wire up hierarchical injectors for downgraded components in
`upgrade/static`: Downgraded components inherit the injector of the first
downgraded component up the DOM tree.
This is similar to (part of) d91a86a, but for `upgrade/static`.
POSSIBLE BREAKING CHANGE:
In order to enable more control over the wiring of downgraded components and
their content (which eventually allows better control over features like
injector setup and content projection), it was necessary to change the
implementation of the directives generated for downgraed components.
The directives are now terminal and manually take care of projecting and
compiling their contents in the post-linking function. This is similar to how
the dynamic version of `upgrade` does it.
This is not expected to affect apps, since the relative order of individual
operations is preserved. Still, it is difficult to predict how every possible
usecase may be affected.
This affects the dynamic version of `upgrade` and makes it more consistent with
the static version, while removing an artificial limitation.
This commit also refactors the file layout and code, in order to share code wrt
to dowgrading components between the dynamic and static versions.
This makes it more consistent with the dynamic version of `upgrade` and makes it
possible to share code between the dynamic and static versions.
This commit also refactors the file layout, moving common and dynamic-specific
files to `common/` and `dynamic/` directories respectively and renaming `aot/`
to `static/`.
Some private keys, used as AngularJS DI tokens, have also been renamed, but this
should not affect apps, since these keys are undocumented and not supposed to
be used externally.
BREAKING CHANGE:
Previously, `upgrade/static/downgradeInjectable` returned an array of the form:
```js
['dep1', 'dep2', ..., function factory(dep1, dep2, ...) { ... }]
```
Now it returns a function with an `$inject` property:
```js
factory.$inject = ['dep1', 'dep2', ...];
function factory(dep1, dep2, ...) { ... }
```
It shouldn't affect the behavior of apps, since both forms are equally suitable
to be used for registering AngularJS injectable services, but it is possible
that type-checking might fail or that current code breaks if it relies on the
returned value being an array.
Angular 1.x -> AngularJS
Angular 1 -> AngularJS
Angular1 -> AngularJS
Angular 2+ -> Angular
Angular 2.0 -> Angular
Angular2 -> Angular
I have deliberately not touched any of the symbol names as that would cause big merge collisions with Tobias's work.
All the renames are in .md, .json, and inline comments and jsdocs.
PR Close#14132
This commit effectively reverts 7e0f02f but for `upgrade/static`
as it was an invalid fix for #6385, that created a more significant
bug, which was that changes were not always being detected.
Angular 1 digests should be run inside the ngZone to ensure
that async changes are detected.
We don't know how to fix#6385 without breaking change detection
at this stage. That issue is triggered by async operations, such as
`setTimeout`, being triggered inside scope watcher functions.
One could argue that watcher functions should be pure and not do
work such as triggering async operations. It is possible that the
original use case could be supported by moving the debounce
logic into the watch listener function, which is only called if the
watched value actually changes.
See #13812
PR Close#14039
- Introduce `InjectionToken<T>` which is a parameterized and type-safe
version of `OpaqueToken`.
DEPRECATION:
- `OpaqueToken` is now deprecated, use `InjectionToken<T>` instead.
- `Injector.get(token: any, notFoundValue?: any): any` is now deprecated
use the same method which is now overloaded as
`Injector.get<T>(token: Type<T>|InjectionToken<T>, notFoundValue?: T): T;`.
Migration
- Replace `OpaqueToken` with `InjectionToken<?>` and parameterize it.
- Migrate your code to only use `Type<?>` or `InjectionToken<?>` as
injection tokens. Using other tokens will not be supported in the
future.
BREAKING CHANGE:
- Because `injector.get()` is now parameterize it is possible that code
which used to work no longer type checks. Example would be if one
injects `Foo` but configures it as `{provide: Foo, useClass: MockFoo}`.
The injection instance will be that of `MockFoo` but the type will be
`Foo` instead of `any` as in the past. This means that it was possible
to call a method on `MockFoo` in the past which now will fail type
check. See this example:
```
class Foo {}
class MockFoo extends Foo {
setupMock();
}
var PROVIDERS = [
{provide: Foo, useClass: MockFoo}
];
...
function myTest(injector: Injector) {
var foo = injector.get(Foo);
// This line used to work since `foo` used to be `any` before this
// change, it will now be `Foo`, and `Foo` does not have `setUpMock()`.
// The fix is to downcast: `injector.get(Foo) as MockFoo`.
foo.setUpMock();
}
```
PR Close#13785
This commit effectively reverts 7e0f02f96e
as it was an invalid fix for #6385, that created a more significant
bug, which was that changes were not always being detected.
Angular 1 digests should be run inside the ngZone to ensure
that async changes are detected.
We don't know how to fix#6385 without breaking change detection
at this stage. That issue is triggered by async operations, such as
`setTimeout`, being triggered inside scope watcher functions.
One could argue that watcher functions should be pure and not do
work such as triggering async operations. It is possible that the
original use case could be supported by moving the debounce
logic into the watch listener function, which is only called if the
watched value actually changes.
Closes#10660, #12318, #12034
PR Close#13812
Detailed changes:
- remove `UNINITIALIZED`, initialize change detection fields with `undefined`.
* we use `view.numberOfChecks === 0` now everywhere
as indicator whether we are in the first change detection cycle
(previously we used this only in a couple of places).
* we keep the initialization itself as change detection get slower without it.
- remove passing around `throwOnChange` in various generated calls,
and store it on the view as property instead.
- change generated code for bindings to DOM elements as follows:
Before:
```
var currVal_10 = self.context.bgColor;
if (jit_checkBinding15(self.throwOnChange,self._expr_10,currVal_10)) {
self.renderer.setElementStyle(self._el_0,'backgroundColor',((self.viewUtils.sanitizer.sanitize(jit_21,currVal_10) == null)? null: self.viewUtils.sanitizer.sanitize(jit_21,currVal_10).toString()));
self._expr_10 = currVal_10;
}
var currVal_11 = jit_inlineInterpolate16(1,' ',self.context.data.value,' ');
if (jit_checkBinding15(self.throwOnChange,self._expr_11,currVal_11)) {
self.renderer.setText(self._text_1,currVal_11);
self._expr_11 = currVal_11;
}
```,
After:
```
var currVal_10 = self.context.bgColor;
jit_checkRenderStyle14(self,self._el_0,'backgroundColor',null,self._expr_10,self._expr_10=currVal_10,false,jit_21);
var currVal_11 = jit_inlineInterpolate15(1,' ',self.context.data.value,' ');
jit_checkRenderText16(self,self._text_1,self._expr_11,self._expr_11=currVal_11,false);
```
Performance impact:
- None seen (checked against internal latency lab)
Part of #13651
With the exception of `$onChanges()`, all lifecycle hooks in ng1 are called on
the controller, regardless if it is the binding destination or not (i.e.
regardless of the value of `bindToController`).
This change makes `upgrade` mimic that behavior when calling lifecycle hooks.
Additionally, calling the `$onInit()` hook has been moved before calling the
linking functions, which also mimics the ng1 behavior.
Fix an issue in `registerForNg1Tests`, where it passes a `null` as
`ng1Injector` to `_bootstrapDone`. This causes a "TypeError: Cannot
read property 'get' of null" to be thrown from `_bootstrapDone`.
- New method `UpgradeAdapter.registerForNg1Tests(modules)` declares the
Angular 1 upgrade module and provides it to the `angular.mock.module()`
helper.
This prevents the need to bootstrap the entire hybrid for every test.
Closes#5462, #12675
- Full support for content projection in downgraded Angular 2
components. In particular, this enables multi-slot projection and
other features on <ng-content>.
- Correctly wire up hierarchical injectors for downgraded Angular 2
components: downgraded components inherit the injector of the first
other downgraded Angular 2 component they find up the DOM tree.
Closes#6629, #7727, #8729, #9643, #9649, #12675
* With non-static ngUpgrade apps, callbacks to `whenStable` were being invoked with the wrong
context
* With non-static ngUpgrade apps, `resumeBootstrap` was being run outside the NgZone
* Remove redundent `whenStableContext` variable
Neither of the first two problems were actually causing bugs (as far as I know), but they *might*
have caused problems in the future.
Inspired by https://github.com/angular/angular/pull/12910, but for non-static apps.
George Kalpakas
Miško Hevery
Martin Probst
Jason Aden
Chuck Jazdzewski
Jason Aden
David Purpura
Alex Eagle
Igor Minar
Peter Bacon Darwin
Karl Seamon
Tobias Bosch
Victor Berchet
Chase
Janne Vanhala
Bowen Ni
Eudes Petonnet-Vincent
Marc Laval
Victor Savkin
Bowen Ni
Sammy Jelin
Brady Isom