require cannot be used in Electron's preloadjs - electron

Question

main.js
//...
const win = new BrowserWindow({
width: 800,
height: 600,
webPreferences: {
preload: path.join(__dirname, './preload/preload.js')
}
});
//...
preload.js
const { contextBridge, ipcRenderer } = require('electron');
const qrcode = require('qrcode');
contextBridge.exposeInMainWorld('electronAPI', {
qrc: qrcode
})
the error
Unable to load preload script: F:\project\bluetools\preload\preload.js
Error: module not found: qrcode
Although direct exposure is not a good behavior, but I need to do it; and the example in the official documentation can be exposed directly, although it is not recommended; but why I require any third-party package in preloadjs shows "module not found: xxx"

Answer 1

Just add nodeIntegration: true to webPreferences. Like that.
//...
const win = new BrowserWindow({
width: 800,
height: 600,
webPreferences: {
nodeIntegration: true,
preload: path.join(__dirname, './preload/preload.js')
}
});
//...

Answer 2

I refer to here, I have got a solution, but it seems to be more troublesome, but what is this compared to security and normative?
ipc.js
module.exports = {
xxx_req: (argements) => {
const { ipcMain, winb: win } = argements;
ipcMain.on('xxx_req', (event, response) => {
win.webContents.send("xxx", "hello");
});
}
}
main.js
const ipcm = require('./ipc.js');
const createWindow = () => {
const win = new BrowserWindow({...});
ipcm.xxx_req({ ipcMain, winb: win })
}
preload.js
const { contextBridge, ipcRenderer } = require('electron');
contextBridge.exposeInMainWorld('electronAPI', {
xxx_req: (response) => ipcRenderer.send('xxx_req',response),
xxx: (callback) => ipcRenderer.on('xxx',callback),
})
index.js(render process)
window.electronAPI.xxx_req("hello");
window.electronAPI.qrcode((event, detail) => {
console.log(detail)
});
If you still don't understand why I did this, please refer to here.