import type { Compilation } from "@rspack/core";
export interface CompressedResult {
    name: string;
    buffer: Buffer;
    algorithm: string;
    originalSize: number;
    compressedSize: number;
}
export type AlgorithmFn = (input: Buffer, options: Record<string, unknown>, callback: (err: Error | null, result: Buffer) => void) => void;
export type Algorithm = string | AlgorithmFn;
export declare const KEEP_SOURCE_MAP = "keep-source-map";
export type DeleteOriginalAssets = boolean | typeof KEEP_SOURCE_MAP | ((name: string) => boolean);
export type FilenameTemplate = string | ((pathData: {
    filename: string;
}) => string);
export type CompressorFn = (eligible: Array<{
    name: string;
    buffer: Buffer;
}>, compilation: Compilation) => Promise<CompressedResult[]>;
export type Rule = RegExp | string;
export type Rules = Rule[] | Rule;
export interface CompressionRspackPluginOptions {
    algorithm?: Algorithm;
    compressionOptions?: Record<string, unknown>;
    filename?: FilenameTemplate;
    test?: Rules;
    include?: Rules;
    exclude?: Rules;
    threshold?: number;
    minRatio?: number;
    deleteOriginalAssets?: DeleteOriginalAssets;
}
export type ResolvedOptions = Required<Pick<CompressionRspackPluginOptions, "algorithm" | "compressionOptions" | "filename" | "threshold" | "minRatio" | "deleteOriginalAssets">> & Pick<CompressionRspackPluginOptions, "test" | "include" | "exclude">;
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