import type { IFs, NestedDirectoryJSON } from 'memfs';
import type { default as TS } from 'typescript';
export type TranspileNestedJsonOptions = {
    fileExtensions?: string[];
};
export type TranspileVirtualFsOptions = {
    fileExtensions?: string[];
    startPath?: string;
};
/**
 * Add support for handling typescript files and code.
 * Requires the optional dependency 'typescript'.
 */
export declare const getTypescriptSupport: (enabled?: boolean, typescriptImportFile?: string, options?: TS.CompilerOptions) => Promise<{
    transpileFile: (value: string, _compilerOptions?: TS.CompilerOptions, _fileName?: string, _diagnostics?: TS.Diagnostic[], _moduleName?: string) => string;
    transpileNestedDirectoryJSON: (mountFsJson: NestedDirectoryJSON, _option?: TranspileNestedJsonOptions) => NestedDirectoryJSON;
    transpileVirtualFs: (fs: IFs, _options?: TranspileVirtualFsOptions) => IFs;
}>;