import * as i0 from "@angular/core";
import { OnDestroy, OnInit } from "@angular/core";
import { AbstractControl } from "@angular/forms";
export declare class CapitalisationDirective implements OnInit, OnDestroy {
  private readonly destroy$;
  private readonly utilsService;
  private readonly document;
  control: AbstractControl;
  /**
   * Captures the focused input or textarea selection before its value is uppercased.
   * Maps offsets through uppercase prefixes to account for expanding characters, such as ß becoming SS.
   * Defaults missing selection direction to 'none' for document implementations with incomplete selection support.
   *
   * @param value The current control value, which must match the focused input's value.
   * @returns The input and its mapped selection, or null when the value differs or selection is unsupported.
   */
  private captureSelection;
  /**
   * Uppercases a changed control value while preserving the focused input's selection.
   *
   * @param value The latest value emitted by the form control.
   */
  private capitaliseControlValue;
  ngOnInit(): void;
  ngOnDestroy(): void;
  static ɵfac: i0.ɵɵFactoryDeclaration<CapitalisationDirective, never>;
  static ɵdir: i0.ɵɵDirectiveDeclaration<CapitalisationDirective, "[opalLibCapitaliseAllCharacters]", never, {
    "control": {
      "alias": "opalLibCapitaliseAllCharacters";
      "required": false;
    };
  }, {}, never, never, true, never>;
}