import * as postcss from 'postcss';
import { Interpolation, InterpolationProps } from '../interpolation';
import type { AnyNode, NodeProps } from '../node';
import type { AnyStatement } from '../statement';
import * as sassInternal from '../sass-internal';
import { SimpleSelector } from './index';
/**
 * The initializer properties for {@link PlaceholderSelector}.
 *
 * @category Selector
 */
export interface PlaceholderSelectorProps extends NodeProps {
    placeholder: Interpolation | InterpolationProps;
    raws?: PlaceholderSelectorRaws;
}
/**
 * Raws indicating how to precisely serialize a {@PlaceholderSelector}.
 *
 * @category Selector
 */
export interface PlaceholderSelectorRaws {
}
/**
 * A placeholder selector.
 *
 * This selects no elements, and is only used as the target for `@extend` rules.
 *
 * @category Selector
 */
export declare class PlaceholderSelector extends SimpleSelector {
    readonly sassType: "placeholder";
    raws: PlaceholderSelectorRaws;
    /** The placeholder name that this selects. */
    get placeholder(): Interpolation;
    set placeholder(placeholder: Interpolation | InterpolationProps);
    private _placeholder;
    constructor(defaults: PlaceholderSelectorProps);
    /** @hidden */
    constructor(_: undefined, inner: sassInternal.PlaceholderSelector);
    clone(overrides?: Partial<PlaceholderSelectorProps>): this;
    toJSON(): object;
    /** @hidden */
    toJSON(_: string, inputs: Map<postcss.Input, number>): object;
    /** @hidden */
    toString(): string;
    /** @hidden */
    get nonStatementChildren(): ReadonlyArray<Exclude<AnyNode, AnyStatement>>;
}