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react-native-fs

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react-native-fs

Native filesystem access for react-native

  • 2.20.0
  • latest
  • Source
  • npm
  • Socket score

Version published
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3
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What is react-native-fs?

react-native-fs is a library for file system access in React Native. It provides a wide range of functionalities for reading, writing, and managing files and directories on both iOS and Android platforms.

What are react-native-fs's main functionalities?

Read a File

This feature allows you to read the contents of a file. The code sample reads a file named 'test.txt' from the document directory and logs its contents.

const RNFS = require('react-native-fs');

RNFS.readFile(RNFS.DocumentDirectoryPath + '/test.txt', 'utf8')
  .then((contents) => {
    console.log(contents);
  })
  .catch((err) => {
    console.log(err.message, err.code);
  });

Write a File

This feature allows you to write data to a file. The code sample writes 'Lorem ipsum dolor sit amet' to a file named 'test.txt' in the document directory.

const RNFS = require('react-native-fs');

const path = RNFS.DocumentDirectoryPath + '/test.txt';

RNFS.writeFile(path, 'Lorem ipsum dolor sit amet', 'utf8')
  .then(() => {
    console.log('FILE WRITTEN!');
  })
  .catch((err) => {
    console.log(err.message);
  });

Delete a File

This feature allows you to delete a file. The code sample deletes a file named 'test.txt' from the document directory.

const RNFS = require('react-native-fs');

const path = RNFS.DocumentDirectoryPath + '/test.txt';

RNFS.unlink(path)
  .then(() => {
    console.log('FILE DELETED');
  })
  .catch((err) => {
    console.log(err.message);
  });

Download a File

This feature allows you to download a file from a remote URL. The code sample downloads a file from 'https://example.com/test.txt' and saves it to the document directory.

const RNFS = require('react-native-fs');

const url = 'https://example.com/test.txt';
const path = RNFS.DocumentDirectoryPath + '/test.txt';

RNFS.downloadFile({ fromUrl: url, toFile: path }).promise
  .then((result) => {
    console.log('FILE DOWNLOADED', result);
  })
  .catch((err) => {
    console.log(err.message);
  });

List Files in a Directory

This feature allows you to list all files in a directory. The code sample lists all files in the document directory.

const RNFS = require('react-native-fs');

RNFS.readDir(RNFS.DocumentDirectoryPath)
  .then((result) => {
    console.log('GOT RESULT', result);
  })
  .catch((err) => {
    console.log(err.message, err.code);
  });

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Package last updated on 04 May 2022

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