dropzone npm（開発者向けの使い方）

npx create-react-app dropzone-demo
cd dropzone-demo

'INSTANT VB TODO TASK: The following line uses invalid syntax:
'npx create-react-app dropzone-demo cd dropzone-demo

npm install react-dropzone
or
yarn add react-dropzone

'INSTANT VB TODO TASK: The following line uses invalid syntax:
'npm install react-dropzone @or yarn add react-dropzone

import React, { useCallback } from 'react';
import { useDropzone } from 'react-dropzone'; // import dropzone
const DropzoneComponent = () => {
  const onDrop = useCallback((acceptedFiles) => {
    console.log(acceptedFiles);
  }, []);
  const { getRootProps, getInputProps, isDragActive } = useDropzone({ onDrop });
  return (
    <div {...getRootProps()} style={dropzoneStyle}>
      {
        isDragActive ?
          <p>Drop the files here ...</p> :
          <p>Drag 'n' drop some files here, or click to select files</p>
      }
    </div>
  );
};
const dropzoneStyle = {
  border: '2px dashed #0087F7',
  borderRadius: '5px',
  padding: '20px',
  textAlign: 'center',
  cursor: 'pointer'
};
export default DropzoneComponent;

'INSTANT VB TODO TASK: The following line could not be converted:
import React,
If True Then
	useCallback
End If
'INSTANT VB TODO TASK: The following line uses invalid syntax:
'from 'react'; import { useDropzone } from 'react-dropzone'; const DropzoneComponent = () => { const onDrop = useCallback((acceptedFiles) => { console.log(acceptedFiles); }, []); const { getRootProps, getInputProps, isDragActive } = useDropzone({ onDrop }); Return(<div {...getRootProps()} style={dropzoneStyle}> { isDragActive ? <p> Drop the files here...</p> : <p> Drag "n"c drop some files here, @or click @to select files</p> } </div>); }; const dropzoneStyle = { border: '2px dashed #0087F7', borderRadius: '5px', padding: '20px', textAlign: 'center', cursor: 'pointer' }; export default DropzoneComponent;

const onDrop = useCallback((acceptedFiles) => {
  const formData = new FormData();
  acceptedFiles.forEach((file) => {
    formData.append('files', file);
  });
  fetch('https://your-upload-endpoint', {
    method: 'POST',
    body: formData,
  })
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));
}, []);

'INSTANT VB TODO TASK: Lambda expressions and anonymous methods are not converted by Instant VB if local variables of the outer method are referenced within the anonymous method:
const onDrop = useCallback((acceptedFiles) =>
If True Then
	const formData = New FormData()
'INSTANT VB TODO TASK: Lambda expressions and anonymous methods are not converted by Instant VB if local variables of the outer method are referenced within the anonymous method:
	acceptedFiles.forEach((file) =>
	If True Then
		formData.append( 'files', file);
	End If
	)
	fetch( 'https: method: 'POST', body: formData}).@then(response => response.json()).@then(data => console.log(data)).catch(@error => console.@error('@Error:', @error));
End If
, ())

import React, { useCallback, useState } from 'react';
import { useDropzone } from 'react-dropzone';
const DropzoneComponent = () => {
  const [files, setFiles] = useState([]);
  const onDrop = useCallback((acceptedFiles) => {
    setFiles(acceptedFiles.map(file => Object.assign(file, {
      preview: URL.createObjectURL(file)
    })));
  }, []);
  const { getRootProps, getInputProps, isDragActive } = useDropzone({ onDrop });
  const thumbs = files.map(file => (
    <div key={file.name}>
      <img
        src={file.preview}
        style={{ width: '100px', height: '100px' }}
        alt={file.name}
      />
    </div>
  ));
  return (
    <div>
      <div {...getRootProps()} style={dropzoneStyle}>
        {
          isDragActive ?
            <p>Drop the files here ...</p> :
            <p>Drag 'n' drop some files here, or click to select files</p>
        }
      </div>
      <div>
        {thumbs}
      </div>
    </div>
  );
};
const dropzoneStyle = {
  border: '2px dashed #0087F7',
  borderRadius: '5px',
  padding: '20px',
  textAlign: 'center',
  cursor: 'pointer'
};
export default DropzoneComponent;

'INSTANT VB TODO TASK: The following line could not be converted:
import React,
If True Then
	useCallback, useState
End If
'INSTANT VB TODO TASK: The following line uses invalid syntax:
'from 'react'; import { useDropzone } from 'react-dropzone'; const DropzoneComponent = () => { const [files, setFiles] = useState([]); const onDrop = useCallback((acceptedFiles) => { setFiles(acceptedFiles.map(file => Object.assign(file, { preview: URL.createObjectURL(file) }))); }, []); const { getRootProps, getInputProps, isDragActive } = useDropzone({ onDrop }); const thumbs = files.map(file => (<div key={file.name}> <img src={file.preview} style={{ width: '100px', height: '100px' }} alt={file.name} /> </div>)); Return(<div> <div {...getRootProps()} style={dropzoneStyle}> { isDragActive ? <p> Drop the files here...</p> : <p> Drag "n"c drop some files here, @or click @to select files</p> } </div> <div> {thumbs} </div> </div>); }; const dropzoneStyle = { border: '2px dashed #0087F7', borderRadius: '5px', padding: '20px', textAlign: 'center', cursor: 'pointer' }; export default DropzoneComponent;

import { useEffect } from 'react';
useEffect(() => {
  // Make sure to revoke the data uris to avoid memory leaks
  return () => files.forEach(file => URL.revokeObjectURL(file.preview));
}, [files]);

import
If True Then
	useEffect
End If
'INSTANT VB TODO TASK: The following line uses invalid syntax:
'from 'react'; useEffect(() => { Return() => files.forEach(file => URL.revokeObjectURL(file.preview)); }, [files]);

npx create-next-app@latest demo-dropzone-ironpdf --use-npm --example "https://github.com/vercel/next-learn/tree/main/basics/learn-starter"

'INSTANT VB TODO TASK: The following line uses invalid syntax:
'npx create-@next-app@latest demo-dropzone-ironpdf --use-npm --example "https://github.com/vercel/next-learn/tree/main/basics/learn-starter"

cd demo-dropzone-ironpdf

'INSTANT VB TODO TASK: The following line uses invalid syntax:
'cd demo-dropzone-ironpdf

npm install @ironsoftware/ironpdf
npm install react-dropzone

'INSTANT VB TODO TASK: The following line uses invalid syntax:
'npm install @ironsoftware/ironpdf npm install react-dropzone

import Head from 'next/head';
import styles from '../styles/Home.module.css';
import {ToastContainer, toast} from 'react-toastify';
import 'react-toastify/dist/ReactToastify.css';
import {useState} from "react";
import DropzoneComponent from "../components/mydropzone";
export default function Home() {
    const [textInput, setTextInput] = useState('');
    const notify = () => {
        toast.success("Success! This is a success message.", {
            position: "top-right"
        });
        toast.info("Information message", {
            position: "bottom-left"
        });
        toast.warn("Warning message", {
            autoClose: 5000
        });
        toast.error("Error message", {
            className: 'custom-toast',
            style: {background: 'red', color: 'white'}
        });
    };
    const generatePdf = async () => {
        try {
            const response = await fetch('/api/pdf?url='+textInput);
            const blob = await response.blob();
            const url = window.URL.createObjectURL(new Blob([blob]));
            const link = document.createElement('a');
            link.href = url;
            link.setAttribute('download', 'awesomeIron.pdf');
            document.body.appendChild(link);
            link.click();
            link.parentNode.removeChild(link);
        } catch (error) {
            console.error('Error generating PDF:', error);
        }
    };
    const handleChange = (event) => {
        setTextInput(event.target.value);
    }
    return (
        <div className={styles.container}>
            <Head>
                <title>Generate PDF Using IronPDF</title>
                <link rel="icon" href="/favicon.ico"/>
            </Head>
            <main>
                <h1>Demo Drop Zone and Generate PDF Using IronPDF</h1>
                <DropzoneComponent/>
                <p>
                    <span>Enter Url To Convert to PDF:</span>{" "}
                </p>
                <button style={{margin:20, padding:5}} onClick={generatePdf}>Generate PDF</button>
            </main>          
            <style jsx>{`
                main {
                    padding: 5rem 0;
                    flex: 1;
                    display: flex;
                    flex-direction: column;
                    justify-content: center;
                    align-items: center;
                }
                footer {
                    width: 100%;
                    height: 100px;
                    border-top: 1px solid #eaeaea;
                    display: flex;
                    justify-content: center;
                    align-items: center;
                }
                footer img {
                    margin-left: 0.5rem;
                }
                footer a {
                    display: flex;
                    justify-content: center;
                    align-items: center;
                    text-decoration: none;
                    color: inherit;
                }
                code {
                    background: #fafafa;
                    border-radius: 5px;
                    padding: 0.75rem;
                    font-size: 1.1rem;
                    font-family: Menlo,
                    Monaco,
                    Lucida Console,
                    Liberation Mono,
                    DejaVu Sans Mono,
                    Bitstream Vera Sans Mono,
                    Courier New,
                    monospace;
                }
            `}</style>
            <style jsx global>{`
                html,
                body {
                    padding: 0;
                    margin: 0;
                    font-family: -apple-system,
                    BlinkMacSystemFont,
                    Segoe UI,
                    Roboto,
                    Oxygen,
                    Ubuntu,
                    Cantarell,
                    Fira Sans,
                    Droid Sans,
                    Helvetica Neue,
                    sans-serif;
                }
                * {
                    box-sizing: border-box;
                }
            `}</style>
        </div>
    );
}

'INSTANT VB TODO TASK: The following line uses invalid syntax:
'import Head from '@next/head'; import styles from '../styles/Home.@module.css'; import {ToastContainer, toast} from 'react-toastify'; import 'react-toastify/dist/ReactToastify.css'; import {useState} from "react"; import DropzoneComponent from "../components/mydropzone"; export default @function Home() { const [textInput, setTextInput] = useState(''); const notify = () => { toast.success("Success! This is a success message.", { position: "top-right" }); toast.info("Information message", { position: "bottom-left" }); toast.warn("Warning message", { autoClose: 5000 }); toast.@error("Error message", { className: 'custom-toast', style: {background: 'red', color: 'white'} }); }; const generatePdf = async() => { try { const response = await fetch('/api/System.Nullable<pdf>url='+textInput); const blob = await response.blob(); const url = window.URL.createObjectURL(New Blob([blob])); const link = document.createElement("a"c); link.href = url; link.setAttribute('download', 'awesomeIron.pdf'); document.body.appendChild(link); link.click(); link.parentNode.removeChild(link); } catch(@error) { console.@error('@Error generating PDF:', @error); } }; const handleChange = (event) => { setTextInput(event.target.value); } Return(<div className={styles.container}> <Head> <title> Generate PDF @Using IronPDF</title> <link rel="icon" href="/favicon.ico"/> </Head> <main> <h1> Demo Drop Zone @and Generate PDF @Using IronPDF</h1> <DropzoneComponent/> <p> <span> Enter Url @To Convert @to PDF:</span>{" "} </p> <button style={{margin:20, padding:5}} onClick={generatePdf}> Generate PDF</button> </main> <style jsx>{` main { padding: 5rem 0; flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; } footer { width: 100%; height: 100px; border-top: 1px solid #eaeaea; display: flex; justify-content: center; align-items: center; } footer img { margin-left: 0.5rem; } footer a { display: flex; justify-content: center; align-items: center; text-decoration: none; color: inherit; } code { background: #fafafa; border-radius: 5px; padding: 0.75rem; font-size: 1.1rem; font-family: Menlo, Monaco, Lucida Console, Liberation Mono, DejaVu Sans Mono, Bitstream Vera Sans Mono, Courier @New, monospace; } `}</style> <style jsx global>{` html, body { padding: 0; margin: 0; font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen, Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif; } * { box-sizing: border-box; } `}</style> </div>); }

// pages/api/pdf.js
import {IronPdfGlobalConfig, PdfDocument} from "@ironsoftware/ironpdf";
// Apply your IronPDF license key
IronPdfGlobalConfig.getConfig().licenseKey = "Add Your key here";
export default async function handler(req, res) {
    try {
        const url = req.query.url
        const pdf = await PdfDocument.fromUrl(url);
        const data = await pdf.saveAsBuffer();
        console.error('data PDF:', data);
        res.setHeader('Content-Type', 'application/pdf');
        res.setHeader('Content-Disposition', 'attachment; filename=awesomeIron.pdf');
        res.send(data);
    } catch (error) {
        console.error('Error generating PDF:', error);
        res.status(500).end();
    }
}

' pages/api/pdf.js
import
If True Then
	IronPdfGlobalConfig, PdfDocument
End If
from "@ironsoftware/ironpdf"
' Apply your IronPDF license key
IronPdfGlobalConfig.getConfig().licenseKey = "Add Your key here"
'INSTANT VB TODO TASK: Local functions are not converted by Instant VB:
'export default async @function handler(req, res)
'{
'	try
'	{
'		const url = req.query.url const pdf = await PdfDocument.fromUrl(url);
'		const data = await pdf.saveAsBuffer();
'		console.@error('data PDF:', data);
'		res.setHeader('Content-Type', 'application/pdf');
'		res.setHeader('Content-Disposition', 'attachment; filename=awesomeIron.pdf');
'		res.send(data);
'	}
'	catch (@error)
'	{
'		console.@error('@Error generating PDF:', @error);
'		res.status(500).@end();
'	}
'}

npm run dev
or
yarn dev

'INSTANT VB TODO TASK: The following line uses invalid syntax:
'npm run dev @or yarn dev

import {IronPdfGlobalConfig, PdfDocument} from "@ironsoftware/ironpdf";
// Apply your IronPDF license key
IronPdfGlobalConfig.getConfig().licenseKey = "Add Your key here";

IRON VB CONVERTER ERROR developers@ironsoftware.com