node.js - 在 Electron 应用中,使用 webpack/electron-builder 打包后,在 worker_threads 提示 MODULE_NOT_FOUND 中需要第三方模块
问题描述
环境:
- 电子:v11.0.3
- 节点:v14.15.1
- 操作系统:win10 2020 x64
package.json - 构建
"build":{
"productName": "myapp",
"directories": {
"output": "build"
},
"files": [
"dist/electron/**/*"
]
}
Webpack.json
{
entry: {
main: path.join(__dirname, '../src/main/index.js')
},
externals: [
...Object.keys(dependencies || {})
],
module: {
rules: [
{
test: /\.js$/,
use: 'babel-loader',
exclude: /node_modules/
},
{
test: /\.node$/,
use: 'node-loader'
}
]
},
node: {
__dirname: process.env.NODE_ENV !== 'production',
__filename: process.env.NODE_ENV !== 'production'
},
output: {
filename: '[name].js',
libraryTarget: 'commonjs2',
path: path.join(__dirname, '../dist/electron')
},
plugins: [
new webpack.ExternalsPlugin("commonjs", ["node-hid"])
],
resolve: {
extensions: ['.js', '.json', '.node']
},
target: 'electron-main'
}
index.js
const { Worker } = require('worker_threads');
const worker = new Worker(`const HID = require("node-hid");console.log("hello");`, { eval:true });
worker.on('error', (err) => {
console.log('worker error:',err);
});
以上代码在开发环境中运行时可以正常输出“hello”,但是我打包后运行时会输出如下错误:
worker error:
{code: "MODULE_NOT_FOUND", requireStack: ["C:\Users\user\AppData\Local\Programs\myapp\[worker eval]"]}
我应该使用asarUnpack
相关配置吗?
解决方案
最后我使用 asarUnpack 解决了这个问题:
index.js
const { Worker } = require('worker_threads');
const worker = new Worker(`
const path = require("path");
function dynamicallyRequire(moduleName) {
let modulePath = getNodeModulesPath(moduleName);
let module = require(modulePath);
return module;
}
function getNodeModulesPath(moduleName) {
return workerData.env === 'development' ? moduleName : path.join(process.cwd(), 'resources\\app.asar.unpacked\\node_modules\\' + moduleName);
}
const HID = dynamicallyRequire("node-hid");
console.log("hello");
`, { eval:true, workerData: { env: process.env.NODE_ENV }});
worker.on('error', (err) => {
console.log('worker error:',err);
});
package.json --> 构建 --> asarUnpack
"asarUnpack": [
"./node_modules/node-hid/**/*",
"./node_modules/node-addon-api/**/*",
"./node_modules/bindings/**/*",
"./node_modules/file-uri-to-path/**/*"
]
值得一提的是,node-hid 的依赖也需要包含在内,例如bindings
, node-addon-api
,file-uri-to-path
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