import type { FileSystem } from '@typescript/native/unstable/fs';
import { Mutant } from '@stryker-mutator/api/core';
import { Logger } from '@stryker-mutator/api/logging';
import { PositionConverter } from './position-converter.js';
/**
 * A simple overlay file system for the native TypeScript compiler (TypeScript 7).
 * * Files are read from disk, except for files that are overridden in-memory (mutated files and the adjusted tsconfig file)
 * * Writes are ignored, output should never be written to disk during mutation testing
 */
export declare class NativeFileSystem {
    #private;
    private readonly log;
    get projectFiles(): ReadonlyMap<string, string>;
    static inject: ["logger"];
    constructor(log: Logger);
    markProjectFile(fileName: string, content?: string): Promise<void>;
    getPositionConverter(fileName: string | undefined): PositionConverter | undefined;
    /**
     * The file system callbacks to provide to the native TypeScript compiler.
     * Returning `undefined` from `readFile` makes the compiler fall back to the real file system.
     */
    readonly tsFileSystem: FileSystem;
    /**
     * Applies a mutant to the original (on disk) content of its file
     */
    mutate(mutant: Pick<Mutant, 'fileName' | 'location' | 'replacement'>): void;
    /**
     * Removes the in-memory override of a file, so the original (on disk) content is used again
     */
    restore(fileName: string): void;
}
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