What is the method for previewing the original file in the React dropzone component?

edit

To preview the original file in the React Dropzone component, you can use the "preview" property of the "FileObject" object that is returned by the "onDrop" callback function. Here's an example:

import React, { useState } from "react";
import Dropzone from "react-dropzone";

function App() {
  const [files, setFiles] = useState([]);

  const onDrop = (acceptedFiles) => {
    setFiles(
      acceptedFiles.map((file) =>
        Object.assign(file, {
          preview: URL.createObjectURL(file),
        })
      )
    );
  };

  return (
    <Dropzone onDrop={onDrop}>
      {({ getRootProps, getInputProps }) => (
        <div {...getRootProps()}>
          <input {...getInputProps()} />
          <p>Drag and drop some files here, or click to select files</p>
          <div>
            {files.map((file) => (
              <div key={file.name}>
                <div>{file.name}</div>
                <img src={file.preview} alt="file preview" />
              </div>
            ))}
          </div>
        </div>
      )}
    </Dropzone>
  );
}

export default App;

In this example, when a file is dropped or selected, we use the "Object.assign" method to add a "preview" property to the file object, with the value of the URL created by the "URL.createObjectURL" function. Then, we use this "preview" property to display a preview of the file in an "img" tag.