Now, using `ng.probe(element)` in the browser console returns
a DebugElement when in dev mode.
`ComponentFixture#debugElement` also returns a new DebugElement.
Breaking Change:
This is a breaking change for unit tests. The API for the DebugElement
has changed. Now, there is a DebugElement or DebugNode for every node
in the DOM, not only nodes with an ElementRef. `componentViewChildren` is
removed, and `childNodes` is a list of ElementNodes corresponding to every
child in the DOM. `query` no longer takes a scope parameter, since
the entire rendered DOM is included in the `childNodes`.
Before:
```
componentFixture.debugElement.componentViewChildren[0];
```
After
```
// Depending on the DOM structure of your component, the
// index may have changed or the first component child
// may be a sub-child.
componentFixture.debugElement.children[0];
```
Before:
```
debugElement.query(By.css('div'), Scope.all());
```
After:
```
debugElement.query(By.css('div'));
```
Before:
```
componentFixture.debugElement.elementRef;
```
After:
```
componentFixture.elementRef;
```
BEFORE:
The following would throw in the dev mode because `f` would return a new array when called by checkNoChanges.
@Component({
template: `
{{f()}}
`
})
class A {
f() { return [1]; }
}
AFTER:
The checkNoChanges function compares only primitives types for equality, and deeply compares iterables. Other objects cannot cause checkNoChanges to throw. This means that the dev mode would never fail given a legal program, but may allow some illegal programs.
Also enable DDC checks across all non-web worker playground apps. We are
now down to 2 DDC errors across all of them. The remaining two need to be
fixed in package:analyzer, not in angular.
BREAKING CHANGE:
- there's a chance of breakage as router's Instruction constructor
signature changed.
Closes#6693
This is needed to prevent memory leaks. The DOM
listeners don’t need to be removed for simple examples,
but a big internal app shows memory leaks because of them.
BREAKING CHANGE:
- `Renderer.listen` now has to return a function that
removes the event listener.
Adds tests for public Dart and TS frameworks to make sure that
components with templateUrl can be created by the TestComponentBuilder.
Closes#6359Closes#6601
Remove String type check in looseIdentical in JS-mode. It is not necessary as dart2js already compiles `identical` to `===` which compares string contents. Inline call sites.
This improves change detection of plain fields by 40%. On a large internal app the improvement is 5%.
Closes#6364
Resolve all invalid field override errors, workaround current
reflection limitations in Dart Dev Compiler. todo, hello_world and
key_events samples now work with Dart Dev Compiler.
BREAKING CHANGE: remove TemplateRef.elementRef setter
Closes#6441
Brian Ford
Pascal Precht
Josh Olson
Brandon Roberts
Felix Itzenplitz
BeastCode
Hongbo Miao
Misko Hevery
Julie Ralph
mlaval
Tobias Bosch
Jason Teplitz
vsavkin
Yegor Jbanov
Pawel Kozlowski
Victor Berchet
Jacob Richman