修复在使用 Quasar 的 Electron 应用中出现的“无法读取未定义属性”的错误。

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英文:

Fixing Cannot read properties of undefined error in electron app using quasar

问题

以下是您要翻译的代码部分:

I am currently working on a small app using the quasar-cli setup with electron.

My electron-preload.ts looks like this:

import { contextBridge} from 'electron'
import alasql from 'alasql'

contextBridge.exposeInMainWorld('Electron', {
  importdata: () => importCsv()
})

export function importCsv () {
  console.log('we get here')
  return alasql.promise('SELECT * FROM CSV("/Users/niki/example_data.csv", {headers:true, seperators:","})')
    .then(function (data) {
      return data
    })
}

In my MainLayout.vue i call it like this:

const firstimport = window.electronApi.importdata()

I then proceed to use the promise for some further operation which all receive the cannot read properties of undefined error. I also get errors in vscode that .electronApi doesn't exist. Literally the same thing worked in my electron app which wasn't created with quasar-cli so i am not sure what i am doing wrong.

Also my window gets created like this, if it's relevant:

function createWindow () {
  /**
   * Initial window options
   */
  mainWindow = new BrowserWindow({
    icon: path.resolve(__dirname, 'icons/icon.png'), // tray icon
    width: 1000,
    height: 600,
    useContentSize: true,
    webPreferences: {
      contextIsolation: true,
      sandbox: false,
      // More info: https://v2.quasar.dev/quasar-cli-vite/developing-electron-apps/electron-preload-script
      preload: path.resolve(__dirname, process.env.QUASAR_ELECTRON_PRELOAD)
    }
  })

  mainWindow.loadURL(process.env.APP_URL)

  if (process.env.DEBUGGING) {
    // if on DEV or Production with debug enabled
    mainWindow.webContents.openDevTools()
  } else {
    // we're on production; no access to devtools pls
    mainWindow.webContents.on('devtools-opened', () => {
      mainWindow?.webContents.closeDevTools()
    })
  }

  mainWindow.on('closed', () => {
    mainWindow = undefined
  })
}

请注意,这是您提供的代码的翻译部分。如果您有其他问题或需要更多帮助,请随时告诉我。

英文:

I am currently working on a small app using the quasar-cli setup with electron.

My electron-preload.ts looks like this:

import { contextBridge} from 'electron'
import alasql from 'alasql'
contextBridge.exposeInMainWorld('Electron', {
importdata: () => importCsv()
})
export function importCsv () {
console.log('we get here')
return alasql.promise('SELECT * FROM CSV("/Users/niki/example_data.csv", {headers:true, seperators:","})')
.then(function (data) {
return data
})

In my MainLayout.vue i call it like this:

const firstimport = window.electronApi.importdata()

I then proceed to use the promise for some further operation which all receive the cannot read properties of undefined error. I also get errors in vscode that .electronApi doesn't exist. Literally the same thing worked in my electron app which wasn't created with quasar-cli so i am not sure what i am doing wrong.

Also my window gets created like this, if it's relevant:

function createWindow () {
/**
* Initial window options
*/
mainWindow = new BrowserWindow({
icon: path.resolve(__dirname, 'icons/icon.png'), // tray icon
width: 1000,
height: 600,
useContentSize: true,
webPreferences: {
contextIsolation: true,
sandbox: false,
// More info: https://v2.quasar.dev/quasar-cli-vite/developing-electron-apps/electron-preload-script
preload: path.resolve(__dirname, process.env.QUASAR_ELECTRON_PRELOAD)
}
})
mainWindow.loadURL(process.env.APP_URL)
if (process.env.DEBUGGING) {
// if on DEV or Production with debug enabled
mainWindow.webContents.openDevTools()
} else {
// we're on production; no access to devtools pls
mainWindow.webContents.on('devtools-opened', () => {
mainWindow?.webContents.closeDevTools()
})
}
mainWindow.on('closed', () => {
mainWindow = undefined
})
}

答案1

得分: 1

global.d.ts文件内容如下:

import alasql from 'alasql'

/**
 * Should match main/preload.ts for typescript support in renderer
 */
export default interface electronAPI {
  sendMessage: (message: string) => void
  importdata: () => any
}

declare global {
  interface Window {
    electronAPI: ElectronAPI,
  }
}
英文:

Ok, After being kept up by this all night and looking at different projects and the old template I used I found my error. First of all i had a typo in electronAPI when calling it. Second of all to make the syntax errors in vscode go away i need the following file:

global.d.ts in my src folder(the renderer folder)

import alasql from 'alasql'
/**
* Should match main/preload.ts for typescript support in renderer
*/
export default interface electronAPI {
sendMessage: (message: string) => void
importdata: () => any
}
declare global {
interface Window {
electronAPI: ElectronAPI,
}

}

huangapple
  • 本文由 发表于 2023年4月7日 04:39:29
  • 转载请务必保留本文链接:https://go.coder-hub.com/75953590.html
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