Wrapper to work with multiple adapter of Node.js filesystem.
fser functions will return Promise.
Sometimes you need memory-fs to substitute native Node.js fs in test
environment.
const { mkdirp, exists, writeFile, readdir, rmrf } = require('fser');
const fs = require('fs');
// or
// let MemoryFs = require('memory-fs');
// let data = {};
// const fs = new MemoryFs(data);
await mkdirp(fs, '/to/directory');
let isDirExists = await exists(fs, '/to/directory');
await writeFile(fs, '/to/directory/some-file.txt', 'blablabla');
let isFileExists = await exists(fs, '/to/directory/some-file.txt');
let files = await readdir(fs, '/to/directory');
await rmrf(fs, '/to/directory');