import type { CanonicalizeContext, FileImporter, Importer, Options } from "sass";
export type { Importer, FileImporter };
export type AnyImporter = Exclude<Options<"sync">["importers"] | Options<"async">["importers"], undefined>[number];
export interface Aliases {
    [index: string]: string;
}
interface AliasImporterOptions {
    aliases: Aliases;
    aliasPrefixes: Aliases;
    includePaths?: string[];
}
export declare class AliasImporter implements FileImporter<"sync"> {
    readonly opts: Readonly<AliasImporterOptions>;
    constructor(opts: AliasImporterOptions);
    readonly findFileUrl: (url: string, ctx: CanonicalizeContext) => URL | null;
}
export interface SASSImporterOptions {
    aliases?: Aliases;
    aliasPrefixes?: Aliases;
    importers?: AnyImporter[];
    includePaths?: string[];
}
/**
 * Construct custom SASS importers based on options.
 *
 *  - Given aliases and alias prefix options, add a custom alias importer.
 *  - Given custom SASS importer(s), append to the list of importers.
 */
export declare const customImporters: (opts: SASSImporterOptions) => AnyImporter[];