目前,我正在尝试在也使用TypeScript的Electron / Angular应用程序中使用opencv4nodejs模块。我已经尝试了几种方法来做到这一点。以下代码块显示了我尝试过的内容以及我收到的错误消息。
// This says cv is undefined:
const cv = window.require('electron').opencv4nodejs;
const img = cv.imread('../assets/poop.jpg');
// Same here:
const cv = window.require('electron').remote.opencv4nodejs;
const img = cv.imread('../assets/poop.jpg');
// Uncaught Error: The specified module could not be found. (Though the module does exist at that location)
const cv = window.require('electron').remote.require('opencv4nodejs');
const img = cv.imread('../assets/poop.jpg');
// Without window I get "Uncaught TypeError: fs.existsSync is not a function"
const remote = require('electron').remote;
const cv = remote.opencv4nodejs;
const img = cv.imread('../assets/poop.jpg');
之前我遇到了fs.existSsync错误,试图要求别的东西。我通过使用以下tsconfig.app.json修复了它:
{
"extends": "../tsconfig.json",
"compilerOptions": {
"outDir": "../out-tsc/app",
"baseUrl": "./",
"module": "es2015",
"types": ["node"] // Included this line
},
"exclude": [
"test.ts",
"**/*.spec.ts"
]
}
据我所知,需要远程需求来加载通常只在node.js服务器上运行的模块。我似乎无法弄清楚如何在我的应用程序中要求模块。该模块的作者对构建问题和其他问题非常有帮助,但他从未将他的模块与TypeScript一起使用。
如何在基于TypeScript / Angular / Electron的应用程序中远程需要模块?
[编辑]
我也尝试过以下方法:
import { Injectable } from '@angular/core';
// If you import a module but never use any of the imported values other than as TypeScript types,
// the resulting javascript file will look as if you never imported the module at all.
import { ipcRenderer } from 'electron';
import * as childProcess from 'child_process';
@Injectable()
export class ElectronService {
ipcRenderer: typeof ipcRenderer;
childProcess: typeof childProcess;
constructor() {
// Conditional imports
if (this.isElectron()) {
this.ipcRenderer = window.require('electron').ipcRenderer;
this.childProcess = window.require('child_process');
}
}
isElectron = () => {
return window && window.process && window.process.type;
}
require = (module: string) => {
return window.require('electron').remote.require(module);
}
}
将此服务注入我的组件并调用electronService.require('opencv4nodejs')也不起作用。
Since Electron v1.6.10,Electron附带TypeScript定义。
要通过TypeScript使用remote
,可以使用以下import语句:
import {remote} from 'electron';