import { type Compiler, type Configuration } from 'webpack';
import MemoryFS from 'memory-fs';
export declare const proxyFilesystem: (originalFilesystem: Compiler["inputFileSystem"]) => MemoryFS;
export declare const patchCompilerFileSystem: (originalCompiler: Compiler, allowProxy?: boolean) => Omit<Compiler, "inputFileSystem" | "outputFileSystem"> & {
    inputFileSystem: MemoryFS;
    outputFileSystem: MemoryFS;
};
export declare const getInMemoryCompiler: (webpackConfig: Configuration, allowProxy?: boolean) => Omit<Compiler, "inputFileSystem" | "outputFileSystem"> & {
    inputFileSystem: MemoryFS;
    outputFileSystem: MemoryFS;
};