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Gathering detailed insights and metrics for thread-loader

thread-loader - 4.0.4 | npmpackage.info

thread-loader

Runs the following loaders in a worker pool

4.0.4

1,130

MIT

JavaScript

50.97 kB

4.9

Installations

npm install thread-loader

Developer Guide

BETA

Typescript

No

Module System

CommonJS

Min. Node Version

>= 16.10.0

Node Version

16.15.0

NPM Version

8.5.5 Pull Requests

Open

4

Total

160

Closed

67

Merged

89

Issues

Open

11

Total

70

Closed

59

Releases

v4.0.4

Updated on Sep 18, 2024

v4.0.3

Updated on Sep 17, 2024

v4.0.2

Updated on May 22, 2023

v4.0.1

Updated on Apr 19, 2023

v4.0.0

Updated on Apr 18, 2023

v3.0.4

Updated on May 10, 2021

View All 26 releases

Languages

JavaScript

SCSS

Less

CSS

TypeScript

JavaScript (99.48%)

SCSS (0.3%)

Less (0.08%)

CSS (0.08%)

TypeScript (0.07%)

Developer

webpack-contrib

Download Statistics

Total Downloads

Last Day

Last Week

Last Month

Last Year

GitHub Statistics

MIT License

1,130 Stars

124 Commits

70 Forks

13 Watchers

5 Branches

37 Contributors

Updated on Jul 08, 2025

Sponsor this package

https://opencollective.com/webpack

Maintainers

View All 37 Contributors

Package Meta Information

Latest Version

4.0.4

Package Id

thread-loader@4.0.4

Unpacked Size

50.97 kB

Size

13.26 kB

File Count

NPM Version

8.5.5

Node Version

16.15.0

Published on

Sep 18, 2024

Total Downloads

Cumulative downloads

Total Downloads

NaN

Last Day

NaN

Compared to previous day

Last Week

NaN

Compared to previous week

Last Month

NaN

Compared to previous month

Last Year

NaN

Compared to previous year

Weekly Downloads

Monthly Downloads

Yearly Downloads

thread-loader

Runs the following loaders in a worker pool.

Getting Started

1npm install --save-dev thread-loader

1yarn add -D thread-loader

1pnpm add -D thread-loader

Put this loader in front of other loaders. The following loaders run in a worker pool.

Loaders running in a worker pool are limited. Examples:

Loaders cannot emit files.
Loaders cannot use custom loader API (i. e. by plugins).
Loaders cannot access the webpack options.

Each worker is a separate node.js process, which has an overhead of ~600ms. There is also an overhead of inter-process communication.

Use this loader only for expensive operations!

Examples

webpack.config.js

1module.exports = {
2  module: {
3    rules: [
4      {
5        test: /\.js$/,
6        include: path.resolve('src'),
7        use: [
8          'thread-loader',
9          // your expensive loader (e.g babel-loader)
10        ],
11      },
12    ],
13  },
14};

with options

1use: [
2  {
3    loader: 'thread-loader',
4    // loaders with equal options will share worker pools
5    options: {
6      // the number of spawned workers, defaults to (number of cpus - 1) or
7      // fallback to 1 when require('os').cpus() is undefined
8      workers: 2,
9
10      // number of jobs a worker processes in parallel
11      // defaults to 20
12      workerParallelJobs: 50,
13
14      // additional node.js arguments
15      workerNodeArgs: ['--max-old-space-size=1024'],
16
17      // Allow to respawn a dead worker pool
18      // respawning slows down the entire compilation
19      // and should be set to false for development
20      poolRespawn: false,
21
22      // timeout for killing the worker processes when idle
23      // defaults to 500 (ms)
24      // can be set to Infinity for watching builds to keep workers alive
25      poolTimeout: 2000,
26
27      // number of jobs the poll distributes to the workers
28      // defaults to 200
29      // decrease of less efficient but more fair distribution
30      poolParallelJobs: 50,
31
32      // name of the pool
33      // can be used to create different pools with elsewise identical options
34      name: 'my-pool',
35    },
36  },
37  // your expensive loader (e.g babel-loader)
38];

prewarming

To prevent the high delay when booting workers it possible to warmup the worker pool.

This boots the max number of workers in the pool and loads specified modules into the node.js module cache.

1const threadLoader = require('thread-loader');
2
3threadLoader.warmup(
4  {
5    // pool options, like passed to loader options
6    // must match loader options to boot the correct pool
7  },
8  [
9    // modules to load
10    // can be any module, i. e.
11    'babel-loader',
12    'babel-preset-es2015',
13    'sass-loader',
14  ],
15);

Contributing

Please take a moment to read our contributing guidelines if you haven't yet done so.

CONTRIBUTING

License

MIT

No vulnerabilities found.

10

Dangerous-Workflow

Determines if the project's GitHub Action workflows avoid dangerous patterns.

10

Token-Permissions

Determines if the project's workflows follow the principle of least privilege.

10

Binary-Artifacts

Determines if the project has generated executable (binary) artifacts in the source repository.

10

License

Determines if the project has defined a license.

5

Code-Review

Determines if the project requires human code review before pull requests (aka merge requests) are merged.

4

Pinned-Dependencies

Determines if the project has declared and pinned the dependencies of its build process.

3

Maintained

Determines if the project is "actively maintained".

0

CII-Best-Practices

Determines if the project has an OpenSSF (formerly CII) Best Practices Badge.

0

Security-Policy

Determines if the project has published a security policy.

0

Fuzzing

Determines if the project uses fuzzing.

0

SAST

Determines if the project uses static code analysis.

0

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

Score

4.9

/10

Last Scanned on 2025-07-07

The Open Source Security Foundation is a cross-industry collaboration to improve the security of open source software (OSS). The Scorecard provides security health metrics for open source projects.

Learn More

Other packages similar to thread-loader

Other packages similar to thread-loader

thread-loader

Installations

Developer Guide

No

CommonJS

>= 16.10.0

16.15.0

8.5.5

Pull Requests

4

160

67

89

Issues

11

70

59

Releases

Languages

Developer

webpack-contrib

Download Statistics

GitHub Statistics

Sponsor this package

Maintainers

Package Meta Information

Total Downloads

NaN

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dependencies

Peer Dependencies

Dev Dependencies

thread-loader

Getting Started

Examples

Contributing

License

10

10

10

10

5

4

3

0

0

0

0

0

4.9

/10