在工作池中运行以下加载器。
npm install --save-dev thread-loader
或
yarn add -D thread-loader
或
pnpm add -D thread-loader
将此加载器放在其他加载器之前。以下加载器在工作池中运行。
在工作池中运行的加载器是有限的。示例
每个工作进程都是一个独立的 node.js 进程,其开销约为 600 毫秒。还有进程间通信的开销。
仅对昂贵的操作使用此加载程序!
webpack.config.js
module.exports = {
module: {
rules: [
{
test: /\.js$/,
include: path.resolve('src'),
use: [
'thread-loader',
// your expensive loader (e.g babel-loader)
],
},
],
},
};
带选项
use: [
{
loader: 'thread-loader',
// loaders with equal options will share worker pools
options: {
// the number of spawned workers, defaults to (number of cpus - 1) or
// fallback to 1 when require('os').cpus() is undefined
workers: 2,
// number of jobs a worker processes in parallel
// defaults to 20
workerParallelJobs: 50,
// additional node.js arguments
workerNodeArgs: ['--max-old-space-size=1024'],
// Allow to respawn a dead worker pool
// respawning slows down the entire compilation
// and should be set to false for development
poolRespawn: false,
// timeout for killing the worker processes when idle
// defaults to 500 (ms)
// can be set to Infinity for watching builds to keep workers alive
poolTimeout: 2000,
// number of jobs the poll distributes to the workers
// defaults to 200
// decrease of less efficient but more fair distribution
poolParallelJobs: 50,
// name of the pool
// can be used to create different pools with elsewise identical options
name: 'my-pool',
},
},
// your expensive loader (e.g babel-loader)
];
预热
为了防止启动工作进程时出现高延迟,可以预热工作进程池。
这将启动池中的最大工作进程数,并将指定模块加载到 node.js 模块缓存中。
const threadLoader = require('thread-loader');
threadLoader.warmup(
{
// pool options, like passed to loader options
// must match loader options to boot the correct pool
},
[
// modules to load
// can be any module, i. e.
'babel-loader',
'babel-preset-es2015',
'sass-loader',
]
);
如果您尚未阅读,请花点时间阅读我们的贡献指南。