Extendable file viewer for web

• Images: png, jpeg, gif, bmp, including 360-degree images
• pdf
• csv
• xslx
• docx
• Video: mp4, webm
• Audio: mp3

Note this module works best with react 16+. If you are using React < 16 you will likely need to use version 0.5. npm install [email protected].

There is one main React component, FileViewer, that takes the following props:

fileType string: type of resource to be shown (one of the supported file formats, eg 'png'). Passing in an unsupported file type will result in displaying an unsupported file type message (or a custom component).

filePath string: the url of the resource to be shown by the FileViewer.

onError function [optional]: function that will be called when there is an error in the file viewer fetching or rendering the requested resource. This is a place where you can pass a callback for a logging utility.

errorComponent react element [optional]: A component to render in case of error instead of the default error component that comes packaged with react-file-viewer.

unsupportedComponent react element [optional]: A component to render in case the file format is not supported.

To use a custom error component, you might do the following:

// MyApp.js
import React, { Component } from 'react';
import logger from 'logging-library';
import FileViewer from 'react-file-viewer';
import { CustomErrorComponent } from 'custom-error';

const file = 'http://example.com/image.png'
const type = 'png'

class MyComponent extends Component {
  render() {
    return (
      <FileViewer
        fileType={type}
        filePath={file}
        errorComponent={CustomErrorComponent}
        onError={this.onError}/>
    );
  }

  onError(e) {
    logger.logError(e, 'error in file-viewer');
  }
}

There is a demo app built into this library that can be used for development purposes. It is by default served via webpack-dev-server.

make start will start the demo app served by webpack-dev-server

Tests use Jest and Enzyme.

Run tests with:

make test

This starts Jest in watch mode. To run a particular test file, while in watch mode hit p and then type the path or name of the file.

Some tests use snapshots. If intended changes to a component cause snapshot tests to fail, snapshot files need to be updated (stored in __snapshots__ directories). To do this run:

npm run jest --updateSnapshot

make lint

Adding supported file types is easy (and pull requests are welcome!). Say, for example, you want to add support for .rtf files. First, you need to create a "driver" for that file type. A driver is just a component that is capable of rendering that file type. (See what exists now in src/components/drivers.) After you've created the driver component and added it to src/components/drivers, you simply need to import the component into file-vewer.jsx and add a switch clause for rtf to the getDriver method. Ie:

case 'rtf':
  return RtfViewer;

• Remove ignored linting rules and fix them