Simple-vfs NPM

Simple virtual file system

Maintains a config object with dirs and files

this.config = {
  opts,
  dirs: {},
  files: {}
}

File operations

async copy(srcPath, targetPath)
async fileExists(filePath)
async makeDir(dirPath)
async readFile(filePath)
async writeFile(filePath, data)
toString() returns lastWritten filePath
clear() - clears file system

State

Maintains a lastWritten object which contains the last written file object (filePath and data)

Also maintains a files object, with entries for each file and a dirs object, with entries for each folder.

Copy

Copy will try to copy (via vfs writeFile) directly from vfs file via readFile. If no such vfs file is present, it will copy "on disk" file content to target path in vfs (also via vfs writeFile).

Files

The files object has an entry for each file name generated. The value of each entry is a lastWritten object with filePath and data

  async writeFile(filePath, data) {
    let lastWritten = {
      filePath,
      data
    }
    this.config.files[filePath] = lastWritten
    this.config.lastWritten = lastWritten
  }

Files entries

The files object would look like this:

 {
   'app/services/add/Readme.md': {
     filePath: 'app/services/add/Readme.md'
     data: 'addition'
   },
   'app/services/mul/Readme.md': {
     filePath: 'app/services/mul/Readme.md'
     data: 'multiplication'
   }
 }