import { SpwExpression } from "../abstract/expression";
import { SpwItemKey } from "../../abstract/item";
declare type Kind = 'perspective_expression';
export declare class PerspectiveExpression extends SpwExpression<Kind> {
    static readonly kind = "perspective_expression";
    get key(): SpwItemKey;
    static isPerspectiveExpression(o: unknown): o is PerspectiveExpression;
}
export {};