Object “fs”

Object > NativeObject > FileSystem

The fs object provides methods to read and write files. All methods are asynchronous and return a promise.

Type: FileSystem extends NativeObject
Constructor: private
Singleton: fs
Namespace: tabris
Direct subclasses: None
JSX Support: No

Examples

JavaScript

import {fs} from 'tabris';

fs.writeFile(fs.cacheDir + '/file.txt', 'Hello World!')
  .then(() => console.log('File written successfully'))
  .catch(error => console.error(error));

See also:

JSX Using the file system to read and write files

Methods

readDir(path)

Reads the contents of a given directory. Returns a promise that resolves on success to an array of the names of the files in the directory excluding ‘.’ and ‘..’. In case of failure, the Promise rejects with an Error.

Parameter Type Description
path string The path of the directory to read.

Returns: Promise<string[]>

readFile(path)

Reads the given file and returns a promise that resolves to the contents of the file on success and rejects with an Error in case of a failure. The file contents are returned as an ArrayBuffer.

Parameter Type Description
path string The path of the file to read.

Returns: Promise<ArrayBuffer>

readFile(path, encoding)

Reads the given text file and returns a promise that resolves to the contents of the file on success and rejects with an Error in case of a failure. The file contents are returned as a string.

Parameter Type Description
path string The path of the file to read.
encoding string The encoding to use to read text files.

Returns: Promise<string>

removeFile(path)

Removes the given file. Returns a promise that resolves on success and rejects with an Error in case of a failure.

Parameter Type Description
path string The path of the file to remove.

Returns: Promise

writeFile(path, data)

Writes the given binary contents to the given file. If the file exists, it is overwritten, otherwise it is created. Returns a promise that resolves on success and rejects with an Error in case of a failure.

Parameter Type Description
path string The path of the file to write.
data ArrayBuffer | Blob The contents to write to the file.

Returns: Promise

writeFile(path, text, encoding?)

Writes the given text to the given file using the given encoding or utf-8 if no encoding is specified. If the file exists, it is overwritten, otherwise it is created. Returns a promise that resolves on success and rejects with an Error in case of a failure.

Parameter Type Description
path string The path of the file to write.
text string The text to write to the file.
encoding string The encoding to use to write a text file. When omitted, utf-8 will be used. Optional.

Returns: Promise

Properties

cacheDir

The path of a directory that the app may use to store cached files. The OS may delete files in this directory when the device runs low on storage. Only use this location for data that can easily be re-created.

Type: string
Settable: No
Change Event: Not supported

filesDir

The path of a directory that the app may use to store persistent files. This is not the directory that contains the files bundled with the project, e.g. images, js files, package.json. You can access these files using the fetch or XMLHttpRequest APIs.

Type: string
Settable: No
Change Event: Not supported