Angular

Which @angular/* package(s) are the source of the bug?

forms

Is this a regression?

No

Description

Expose ControlConfig type in public API

export type ControlConfig<T> = [T|FormControlState<T>, (ValidatorFn|(ValidatorFn[]))?, (AsyncValidatorFn|AsyncValidatorFn[])?];

https://github.com/angular/angular/blob/main/packages/forms/src/form_builder.ts#L

Describe the bug
In Firefox, the zoom feature uses transform styles (see storybookjs/storybook#12845) - unfortunately this breaks positioning on elements that require position: fixed when in the "Docs" view.

Normally a position: fixed element's position would correspond to the viewport but in Firefox it corresponds to the element with the transform style.

While writing string data (example = "121212121212121" -> string of all integer characters) into excel.
while user download and see, the downloaded xl/CSV, the data is shown in exponential format. Is there a way to show the same data. without converting into exponential in this case.

The Schematics Glossary doesn't introduce what a Task is, making it difficult for new schematic developers to know what Tasks should be used for and how they work.

The Schematics for libraries page on angular.io [demonstrates an example for adding a task](https://angular.io/guide/schematics-f

Feature Description

I can set the animation duration for the tabs themselves using animationDuration on the mat-tab-group. If I set this to 0, the tabs switch instantly, but the ink bar moves across taking 500ms, which makes the tab switching look slower than it actually is.

I can implement this myself using ng-deep:

::ng-deep .mat-ink-bar {                                

Environment
Provide version numbers for the following components (information can be retrieved by running tns info in your project folder or by inspecting the package.json of the project):

• CLI: 6.2.2
• Cross-platform modules: 6.0.1
• Android Runtime: 6.2.0
• iOS Runtime: 6.2.0
• Plugin(s): unrelated

Describe the bug
openFile method of utils module does not preview the

**Describe