react-local-file-system

This package contains tools for your react front end web app to access local files via File System API. This package only supports Chrome and Chromium-based browsers.

Install

npm i react-local-file-system

Quick setup

The minimal setup to use this package is to utilize the FolderView component for general file operations and to create a custom handler function, onFileClick, to manage any file click actions. Specifically, the FolderView component is used in the UI to access files, accepting a prop named onFileClick that takes a single parameter: fileHandle. The onFileClick function is triggered when a file is clicked in the UI, with fileHandle being the file handle of the clicked file.

Code example:

import FolderView, { useFileSystem, getFileText } from "react-local-file-system";

export default function App() {
    // get folder handler and status with useFileSystem hook
    const { openDirectory, directoryReady, statusText, rootDirHandle } = useFileSystem();
    // example onFileClick handler
    async function onFileClick(fileHandle) {
        console.log("file content of", fileHandle.name, ":", await getFileText(fileHandle));
    }
    // Show FolderView component only when its ready
    return directoryReady ? (
        <FolderView rootFolder={rootDirHandle} onFileClick={onFileClick} />
    ) : (
        <>
            <button onClick={openDirectory}>Open Dir</button>
            <p>{statusText}</p>
        </>
    );
}

Demo

The live demo of the example above is here: https://urfdvw.github.io/react-local-file-system/

For the code of the live demo, please see the demo branch

Contents

FolderView component

Supported operations

• view
  • click on file to trigger onFileClick function
  • click on folder to open
  • click on folder in the path to go back
• context menu
  • rename
  • duplicate
  • remove
• add
  • add new file
  • add new folder
• drag and drop on to folder
  • move file or folder

useFileSystem hook

returned objects

• methods:
  • openDirectory: function handle to open a directory, or switch to a new directory
  • path2FolderHandles: given a directory path (string) return a folder handle
• values:
  • rootDirHandle: the folder handle of the opened folder
  • directoryReady: boolean indicator of whether the folder handles in the hook are ready to be used
  • statusText: string text indicator of status of the folder handles.

fileSystem util functions

functions

• file level
  • writeFileText(fileHandle, text) -> void: write text to a file
  • getFileText(fileHandle) -> string: read text from a file
• folder level (docs coming, please see source code for help at the moment)

PeerDependency

"@mui/icons-material": "^5.14.13",
"@mui/material": "^5.14.13",
"react": "^18.2.0",
"react-dom": "^18.2.0"