import * as postcss from 'postcss';
import { Interpolation, InterpolationProps } from '../interpolation';
import { NodeProps } from '../node';
import type * as sassInternal from '../sass-internal';
import { Expression } from '.';
/**
 * The initializer properties for {@link StringExpression}.
 *
 * @category Expression
 */
export interface StringExpressionProps extends NodeProps {
    text: Interpolation | InterpolationProps;
    quotes?: boolean;
    raws?: StringExpressionRaws;
}
/**
 * Raws indicating how to precisely serialize a {@link StringExpression}.
 *
 * @category Expression
 */
export interface StringExpressionRaws {
    /**
     * The type of quotes to use (single or double).
     *
     * This is ignored if the string isn't quoted.
     */
    quotes?: '"' | "'";
}
/**
 * An expression representing a (quoted or unquoted) string literal in Sass.
 *
 * @category Expression
 */
export declare class StringExpression extends Expression {
    #private;
    readonly sassType: "string";
    raws: StringExpressionRaws;
    /** The interpolation that represents the text of this string. */
    get text(): Interpolation;
    set text(value: Interpolation | InterpolationProps);
    private _text;
    /**
     * Whether this is a quoted or unquoted string. Defaults to false.
     *
     * Unquoted strings are most commonly used to represent identifiers, but they
     * can also be used for string-like functions such as `url()` or more unusual
     * constructs like Unicode ranges.
     */
    get quotes(): boolean;
    set quotes(quotes: boolean);
    private _quotes;
    constructor(defaults: StringExpressionProps);
    /** @hidden */
    constructor(_: undefined, inner: sassInternal.StringExpression);
    clone(overrides?: Partial<StringExpressionProps>): this;
    toJSON(): object;
    /** @hidden */
    toJSON(_: string, inputs: Map<postcss.Input, number>): object;
    /** @hidden */
    toString(): string;
    /** @hidden */
    get nonStatementChildren(): ReadonlyArray<Interpolation>;
}