import { type DOMConversionMap, type DOMExportOutput, type EditorConfig, type ElementFormatType, type LexicalEditor, type LexicalNode, type NodeKey, type Spread } from 'lexical';
import { DecoratorBlockNode, SerializedDecoratorBlockNode } from '@lexical/react/LexicalDecoratorBlockNode';
import { AlertColor } from '@mui/material/Alert';
import type { JSX } from 'react';
export type SerializedAlertNode = Spread<{
    type: 'alert';
    text: string;
    severity: AlertColor;
}, SerializedDecoratorBlockNode>;
export declare class AlertNode extends DecoratorBlockNode {
    __text: string;
    __severity: AlertColor;
    static getType(): string;
    static clone(node: AlertNode): AlertNode;
    constructor(text: string, severity: AlertColor, format?: ElementFormatType, key?: NodeKey);
    exportDOM(): DOMExportOutput;
    static importDOM(): DOMConversionMap | null;
    static importJSON(serializedNode: SerializedAlertNode): AlertNode;
    exportJSON(): SerializedAlertNode;
    getText(): string;
    setText(text: string): void;
    getSeverity(): string;
    setSeverity(severity: AlertColor): void;
    decorate(editor: LexicalEditor, config: EditorConfig): JSX.Element;
    isInline(): false;
}
export declare function $createAlertNode(text: string, severity: AlertColor): AlertNode;
export declare function $isAlertNode(node: LexicalNode | null | undefined): node is AlertNode;