import * as postcss from 'postcss';
import type { AtRuleRaws } from 'postcss/lib/at-rule';
import { ArgumentList, ArgumentListProps } from '../argument-list';
import { NodeProps } from '../node';
import * as sassInternal from '../sass-internal';
import { Statement, StatementWithChildren } from '.';
import { _AtRule } from './at-rule-internal';
/**
 * The set of raws supported by {@link ContentRule}.
 *
 * @category Statement
 */
export interface ContentRuleRaws extends Omit<AtRuleRaws, 'params'> {
    /**
     * Whether to include an empty argument list. If the argument list isn't
     * empty, this is ignored.
     */
    showArguments?: boolean;
}
/**
 * The initializer properties for {@link ContentRule}.
 *
 * @category Statement
 */
export interface ContentRuleProps extends NodeProps {
    raws?: ContentRuleRaws;
    contentArguments?: ArgumentList | ArgumentListProps;
}
/**
 * An `@content` rule. Extends [`postcss.AtRule`].
 *
 * [`postcss.AtRule`]: https://postcss.org/api/#atrule
 *
 * @category Statement
 */
export declare class ContentRule extends _AtRule<Partial<ContentRuleProps>> implements Statement {
    readonly sassType: "content-rule";
    parent: StatementWithChildren | undefined;
    raws: ContentRuleRaws;
    readonly nodes: undefined;
    /** The arguments to pass to the mixin invocation's `using` block. */
    get contentArguments(): ArgumentList;
    set contentArguments(args: ArgumentList | ArgumentListProps | undefined);
    private _contentArguments;
    get name(): string;
    set name(value: string);
    get params(): string;
    set params(value: string | number | undefined);
    constructor(defaults?: ContentRuleProps);
    /** @hidden */
    constructor(_: undefined, inner: sassInternal.ContentRule);
    clone(overrides?: Partial<ContentRuleProps>): this;
    toJSON(): object;
    /** @hidden */
    toJSON(_: string, inputs: Map<postcss.Input, number>): object;
    /** @hidden */
    toString(stringifier?: postcss.Stringifier | postcss.Syntax): string;
    /** @hidden */
    get nonStatementChildren(): ReadonlyArray<ArgumentList>;
}