providence-analytics/src/program/utils/fs-adapter.js

Providence is the 'All Seeing Eye' that measures effectivity and popularity of software. Release management will become highly efficient due to an accurate impact analysis of (breaking) changes

import originalNodeFs from 'fs';

/**
 * Provides access to the file system (fs) which can be the real file system or a mock.
 */
class FsAdapter {
  constructor() {
    this.fs = originalNodeFs;
  }

  /**
   * Call this for mocking or compatibility with non-node environments.
   * @param {originalNodeFs} fs
   */
  setFs(fs) {
    this.fs = fs;
  }

  /**
   * When done testing, call this to restore the real file system.
   */
  restoreFs() {
    this.fs = originalNodeFs;
  }
}

export const fsAdapter = new FsAdapter();