/** Represents contenteditable element with custom input props as value, select etc. */
export default class WUPTextareaInput extends HTMLElement {
    #private;
    static $use(): void;
    static get $style(): string;
    constructor();
    $options: Record<string, any>;
    connectedCallback(): void;
    /** Makes the selection equal to the current object. */
    select(): void;
    get readOnly(): boolean;
    set readOnly(v: boolean);
    _cached?: string;
    /** Get/set innerHTML (br converted into '\n') */
    get value(): string;
    set value(v: string);
    /** Sets the start and end positions of a selection in a text field.
     * @param start The offset into the text field for the start of the selection.
     * @param end The offset into the text field for the end of the selection. */
    setSelectionRange(start: number | null, end: number | null): void;
    /** Gets or sets the starting position or offset of a text selection. */
    get selectionStart(): number | null;
    set selectionStart(v: number | null);
    /** Gets or sets the end position or offset of a text selection. */
    get selectionEnd(): number | null;
    set selectionEnd(v: number | null);
    /** Fix for contenteditable (it doesn't contain selectionStart & selectionEnd props) */
    get selection(): null | {
        start: number;
        end: number;
    };
    set selection(sel: null | {
        start: number;
        end: number;
    });
}