import * as postcss from 'postcss';
import { NodeProps } from '../../node';
import type * as sassInternal from '../../sass-internal';
import { AnyIfConditionExpression, IfConditionExpression } from './index';
import { IfEntry } from '../if-entry';
import { Interpolation, InterpolationProps } from '../../interpolation';
/**
 * The set of raws supported by {@link IfConditionFunction}.
 *
 * @category Expression
 */
export interface IfConditionFunctionRaws {
    /** The whitespace between the opening parenthesis and the argument. */
    afterOpen?: string;
    /** The whitespace between the argument and the closing parenthesis. */
    beforeClose?: string;
}
/**
 * The initializer properties for {@link IfConditionFunction}.
 *
 * @category Expression
 */
export interface IfConditionFunctionProps extends NodeProps {
    raws?: IfConditionFunctionRaws;
    name: Interpolation | InterpolationProps;
    argument: Interpolation | InterpolationProps;
}
/**
 * A CSS function condition in an `if()` condition.
 *
 * @category Expression
 */
export declare class IfConditionFunction extends IfConditionExpression {
    readonly sassType: "if-condition-function";
    raws: IfConditionFunctionRaws;
    parent: IfEntry | AnyIfConditionExpression | undefined;
    /** The function's name. */
    get name(): Interpolation;
    set name(name: Interpolation | InterpolationProps);
    private _name?;
    /** The function's argument or arguments. */
    get argument(): Interpolation;
    set argument(argument: Interpolation | InterpolationProps);
    private _argument?;
    constructor(defaults: IfConditionFunctionProps);
    /** @hidden */
    constructor(_: undefined, inner: sassInternal.IfConditionFunction);
    clone(overrides?: Partial<IfConditionFunctionProps>): this;
    toJSON(): object;
    /** @hidden */
    toJSON(_: string, inputs: Map<postcss.Input, number>): object;
    /** @hidden */
    toString(): string;
    /** @hidden */
    get nonStatementChildren(): ReadonlyArray<Interpolation>;
}