NgxTypedReactiveForm

What is it

It is an attempt to bring types to Angular's Reactive Forms using generics. For the sake of intellisense and better developer experience.

Online demo: strongly typed reactive form on Stackblitz

Features

• No overrides.
• No API to learn.
• Types for Valuechanges, value, etc.
• Four generic types:
  • TypedFormBuilderConfig
  • TypedFormControl
  • TypedFormGroup
  • TypedFormArray

Usage

• Start with a model:

export interface UserDto {
    name: string;
    about: string;
    registered: string;
  }

• Generate a strongly typed TypedFormBuilderConfig based on the model, to use with Reactive Forms FormBuilder:

export const USER_FORM_CONFIG: TypedFormBuilderConfig<UserDto> = {
    /** NOTE: value is strongly typed */
  name: ['John Doe', Validators.required],
  about: ['This is a generic description', Validators.required],
  registered: ['1992-12-12', Validators.required],
};

• Create a typed reactive form:

export class DemoComponent implements OnInit {
  public userFormGroup: TypedFormGroup<UserDto>;

  constructor(private fb: FormBuilder) {}

  ngOnInit(): void {
    this.userFormGroup = this.fb.group(USER_FORM_CONFIG) as TypedFormGroup<UserDto>;
  }
}

• Enjoy intellisense in template and form's methods:

<input [formControl]="userFormGroup.controls.name" />

Don't forget to star in on github if you like it.