FormControls, FormGroups, and FormArrays now optionally accept an options
object as their second argument. Validators and async validators can be
passed in as part of this options object (though they can still be passed
in as the second and third arg as before).
```ts
const c = new FormControl(, {
validators: [Validators.required],
asyncValidators: [myAsyncValidator]
});
```
This commit also adds support for passing arrays of validators and async
validators to FormGroups and FormArrays, which formerly only accepted
individual functions.
```ts
const g = new FormGroup({
one: new FormControl()
}, [myPasswordValidator, myOtherValidator]);
```
This change paves the way for adding more options to AbstractControls,
such as more fine-grained control of validation timing.
Angular can make many assumptions about its event handlers. As a result
the bookkeeping for native addEventListener is significantly cheaper
than Zone's addEventLister which can't make such assumptions.
This change bypasses the Zone's addEventListener if present and always
uses the native addEventHandler. As a result registering event listeners
is about 3 times faster.
PR Close#18107
HttpClient is an evolution of the existing Angular HTTP API, which exists
alongside of it in a separate package, @angular/common/http. This structure
ensures that existing codebases can slowly migrate to the new API.
The new API improves significantly on the ergonomics and features of the legacy
API. A partial list of new features includes:
* Typed, synchronous response body access, including support for JSON body types
* JSON is an assumed default and no longer needs to be explicitly parsed
* Interceptors allow middleware logic to be inserted into the pipeline
* Immutable request/response objects
* Progress events for both request upload and response download
* Post-request verification & flush based testing framework
Destructuring of the form:
function foo({a, b}: {a?, b?} = {})
breaks strictNullChecks, due to the TypeScript bug https://github.com/microsoft/typescript/issues/10078.
This change eliminates usage of destructuring in function argument lists in cases where it would leak
into the public API .d.ts.
With 4.2, we introduced the min and max validator directives. This was actually a breaking change because their selectors could include custom value accessors using the min/max properties for their own purposes.
For now, we are rolling back the change by removing the exports. At the least, we should wait to add them until a major version. In the meantime, we will have further discussion about what the best solution is going forward for all validator directives.
Closes#17491.
----
PR #17551 tried to roll this back, but did not remove the dead code. This failed internal tests that were checking that all declared directives were used.
This PR rolls back the original PR and commit the same as #17551 while also removing the dead code.
With 4.2, we introduced the min and max validator directives. This was actually a breaking change because
their selectors could include custom value accessors using the min/max properties for their own purposes.
For now, we are rolling back the change by removing the exports.
Closes#17491.
This puts the behavior introduced in 573b8611bc behind the new flag
`alwaysCompileGeneratedCode` to not break users that might have relied
on this behavior.
Previously the RequestOptions/ResponseOptions classes had constructors
with a destructured argument hash (represented by the
{Request,Response}OptionsArgs type). This type consists entirely of
optional members.
This produces a .d.ts file which includes the constructor declaration:
constructor({param, otherParam}?: OptionsArgs);
However, this declaration doesn't type-check properly. TypeScript
determines the actual type of the hash parameter to be OptionsArgs | undefined,
which it then concludes does not have a `param` or `otherParam` member.
This is a bug in TypeScript ( https://github.com/microsoft/typescript/issues/10078 ).
As a workaround, destructuring is moved inside the method, where it does not produce
broken artifacts in the .d.ts.
Fixes#16663.
Motivation: `yarn outdated`, for exmaple, shows the homepage URL on the command line. If copy-pasting or clicking on the URL, it's nice to see the repo's page instead of a 404.
Now converts shorthand imports for every TypeScript target. Tsickle is able to expand index shorthand imports for every TypeScript target and module possibility.
Expanding shorthand imports for CommonJS modules is also helpful when testing in the browser. Module loaders like SystemJS are not able to understand directory imports (or index shorthand imports)
Matias Niemelä
Jason Aden
Victor Berchet
Kara Erickson
Abhimanyu Deora
Vikram Subramanian
Miško Hevery
Alex Eagle
Chuck Jazdzewski
Alex Rickabaugh
Georgios Kalpakas
Igor Minar
Jason Aden
Pawel Kozlowski
Hans Larsen
Tobias Bosch
David Herges
Robert Spier
Paul Gschwendtner