class VirtualFileSystem {
  constructor() {
    this.fileData = {};
  }
  readFileSync(fileName, options) {
    if (options === void 0) {
      options = {};
    }
    const encoding = typeof options === 'string' ? options : options.encoding;
    const virtualFileName = normalizeFilename(fileName);
    const data = this.fileData[virtualFileName];
    if (data == null) {
      throw new Error(`File '${virtualFileName}' not found in virtual file system`);
    }
    if (encoding) {
      // return a string
      return typeof data === 'string' ? data : data.toString(encoding);
    }
    return Buffer.from(data, typeof data === 'string' ? 'base64' : undefined);
  }
  writeFileSync(fileName, content) {
    this.fileData[normalizeFilename(fileName)] = content;
  }
  bindFileData(data, options) {
    if (data === void 0) {
      data = {};
    }
    if (options === void 0) {
      options = {};
    }
    if (options.reset) {
      this.fileData = data;
    } else {
      Object.assign(this.fileData, data);
    }
  }
}
function normalizeFilename(fileName) {
  if (fileName.indexOf(__dirname) === 0) {
    fileName = fileName.substring(__dirname.length);
  }
  if (fileName.indexOf('/') === 0) {
    fileName = fileName.substring(1);
  }
  return fileName;
}
var virtualFs = new VirtualFileSystem();

export { virtualFs as default };
