import * as postcss from 'postcss';
import { ArgumentList, ArgumentListProps } from '../argument-list';
import { NodeProps } from '../node';
import { RawWithValue } from '../raw-with-value';
import * as sassInternal from '../sass-internal';
import { Expression } from '.';
/**
 * The initializer properties for {@link FunctionExpression}.
 *
 * @category Expression
 */
export interface FunctionExpressionProps extends NodeProps {
    namespace?: string;
    name: string;
    arguments: ArgumentList | ArgumentListProps;
    raws?: FunctionExpressionRaws;
}
/**
 * Raws indicating how to precisely serialize a {@link FunctionExpression}.
 *
 * @category Expression
 */
export interface FunctionExpressionRaws {
    /**
     * The function's namespace.
     *
     * This may be different than {@link FunctionExpression.namespace} if the
     * namespace contains escape codes.
     */
    namespace?: RawWithValue<string>;
    /**
     * The function's name.
     *
     * This may be different than {@link FunctionExpression.name} if the name
     * contains escape codes or underscores.
     */
    name?: RawWithValue<string>;
}
/**
 * An expression representing a (non-interpolated) function call in Sass.
 *
 * @category Expression
 */
export declare class FunctionExpression extends Expression {
    readonly sassType: "function-call";
    raws: FunctionExpressionRaws;
    /**
     * This function's namespace.
     *
     * This is the parsed and normalized value, with escapes resolved to the
     * characters they represent.
     */
    get namespace(): string | undefined;
    set namespace(namespace: string | undefined);
    private _namespace;
    /**
     * This function's name.
     *
     * This is the parsed and normalized value, with underscores converted to
     * hyphens and escapes resolved to the characters they represent.
     */
    get name(): string;
    set name(name: string);
    private _name;
    /** The arguments to pass to the function. */
    get arguments(): ArgumentList;
    set arguments(args: ArgumentList | ArgumentListProps | undefined);
    private _arguments;
    constructor(defaults: FunctionExpressionProps);
    /** @hidden */
    constructor(_: undefined, inner: sassInternal.FunctionExpression);
    clone(overrides?: Partial<FunctionExpressionProps>): this;
    toJSON(): object;
    /** @hidden */
    toJSON(_: string, inputs: Map<postcss.Input, number>): object;
    /** @hidden */
    toString(): string;
    /** @hidden */
    get nonStatementChildren(): ReadonlyArray<ArgumentList>;
}