import * as postcss from 'postcss';
import { NodeProps } from '../node';
import { RawWithValue } from '../raw-with-value';
import * as sassInternal from '../sass-internal';
import { Expression } from '.';
/**
 * The initializer properties for {@link VariableExpression}.
 *
 * @category Expression
 */
export interface VariableExpressionProps extends NodeProps {
    namespace?: string;
    variableName: string;
    raws?: VariableExpressionRaws;
}
/**
 * Raws indicating how to precisely serialize a {@link VariableExpression}.
 *
 * @category Expression
 */
export interface VariableExpressionRaws {
    /**
     * The variable's namespace.
     *
     * This may be different than {@link VariableExpression.namespace} if the
     * namespace contains escape codes.
     */
    namespace?: RawWithValue<string>;
    /**
     * The variable's name.
     *
     * This may be different than {@link VariableExpression.varialbeName} if the
     * name contains escape codes or underscores.
     */
    variableName?: RawWithValue<string>;
}
/**
 * An expression representing a variable reference in Sass.
 *
 * @category Expression
 */
export declare class VariableExpression extends Expression {
    readonly sassType: "variable";
    raws: VariableExpressionRaws;
    /**
     * This variable'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 variable's name.
     *
     * This is the parsed and normalized value, with underscores converted to
     * hyphens and escapes resolved to the characters they represent.
     */
    get variableName(): string;
    set variableName(variableName: string);
    private _variableName;
    constructor(defaults: VariableExpressionProps);
    /** @hidden */
    constructor(_: undefined, inner: sassInternal.VariableExpression);
    clone(overrides?: Partial<VariableExpressionProps>): this;
    toJSON(): object;
    /** @hidden */
    toJSON(_: string, inputs: Map<postcss.Input, number>): object;
    /** @hidden */
    toString(): string;
    /** @hidden */
    get nonStatementChildren(): ReadonlyArray<never>;
}