Gathering detailed insights and metrics for mobx
Installations
npm install mobxDeveloper Guide
BETA
Typescript
Yes
Module System
CommonJS
Node Version
22.13.1
NPM Version
10.9.2
Releases
112
mobx@6.13.6
mobx@6.13.6
Updated on Jan 30, 2025
mobx-react@9.2.0
mobx-react@9.2.0
Updated on Dec 11, 2024
mobx-react-lite@4.1.0
mobx-react-lite@4.1.0
Updated on Dec 11, 2024
eslint-plugin-mobx@0.0.13
eslint-plugin-mobx@0.0.13
Updated on Oct 21, 2024
eslint-plugin-mobx@0.0.12
eslint-plugin-mobx@0.0.12
Updated on Oct 20, 2024
mobx@6.13.5
mobx@6.13.5
Updated on Oct 16, 2024
Contributors
339
Languages
5
TypeScript
JavaScript
HTML
CSS
Shell
TypeScript (54.68%)
JavaScript (42.98%)
HTML (2.04%)
CSS (0.29%)
validate.email 🚀
Verify real, reachable, and deliverable emails with instant MX records, SMTP checks, and disposable email detection.
Developer
Download Statistics
Total Downloads
280,505,278
Last Day
367,523
Last Week
1,829,470
Last Month
7,805,118
Last Year
78,353,186
GitHub Statistics
MIT License
27,772 Stars
3,325 Commits
1,783 Forks
332 Watchers
32 Branches
339 Contributors
Updated on Mar 14, 2025
Bundle Size
63.53 kB
Minified
17.51 kB
Minified + Gzipped
Sponsor this package
Maintainers
6
Package Meta Information
Latest Version
6.13.6
Package Id
mobx@6.13.6
Unpacked Size
4.13 MB
Size
0.98 MB
File Count
134
NPM Version
10.9.2
Node Version
22.13.1
Published on
Jan 30, 2025
Total Downloads
Cumulative downloads
Total Downloads
280,505,278
Last Day
7%
367,523
Compared to previous day
Last Week
1.2%
1,829,470
Compared to previous week
Last Month
18%
7,805,118
Compared to previous month
Last Year
40.3%
78,353,186
Compared to previous year
Daily Downloads
Weekly Downloads
Monthly Downloads
Yearly Downloads
MobX
Simple, scalable state management.
Documentation
Documentation can be found at mobx.js.org.
Sponsors
MobX is made possible by the generosity of the sponsors below, and many other individual backers. Sponsoring directly impacts the longevity of this project.
🥇🥇 Platinum sponsors ($5000+ total contribution): 🥇🥇
🥇 Gold sponsors ($2500+ total contribution):
🥈 Silver sponsors ($500+ total contributions):
Introduction
Anything that can be derived from the application state, should be. Automatically.
MobX is a signal based, battle-tested library that makes state management simple and scalable by transparently applying functional reactive programming. The philosophy behind MobX is simple:
😙
Straightforward
Write minimalistic, boilerplate-free code that captures your intent. Trying to update a record field? Simply use a normal JavaScript assignment — the reactivity system will detect all your changes and propagate them out to where they are being used. No special tools are required when updating data in an asynchronous process.
🚅
Effortless optimal rendering
All changes to and uses of your data are tracked at runtime, building a dependency tree that captures all relations between state and output. This guarantees that computations that depend on your state, like React components, run only when strictly needed. There is no need to manually optimize components with error-prone and sub-optimal techniques like memoization and selectors.
🤹🏻♂️
Architectural freedom
MobX is unopinionated and allows you to manage your application state outside of any UI framework. This makes your code decoupled, portable, and above all, easily testable.
A quick example
So what does code that uses MobX look like?
1import React from "react" 2import ReactDOM from "react-dom" 3import { makeAutoObservable } from "mobx" 4import { observer } from "mobx-react-lite" 5 6// Model the application state. 7function createTimer() { 8 return makeAutoObservable({ 9 secondsPassed: 0, 10 increase() { 11 this.secondsPassed += 1 12 }, 13 reset() { 14 this.secondsPassed = 0 15 } 16 }) 17} 18 19const myTimer = createTimer() 20 21// Build a "user interface" that uses the observable state. 22const TimerView = observer(({ timer }) => ( 23 <button onClick={() => timer.reset()}>Seconds passed: {timer.secondsPassed}</button> 24)) 25 26ReactDOM.render(<TimerView timer={myTimer} />, document.body) 27 28// Update the 'Seconds passed: X' text every second. 29setInterval(() => { 30 myTimer.increase() 31}, 1000)
The observer wrapper around the TimerView React component will automatically detect that rendering
depends on the timer.secondsPassed observable, even though this relationship is not explicitly defined. The reactivity system will take care of re-rendering the component when precisely that field is updated in the future.
Every event (onClick / setInterval) invokes an action (myTimer.increase / myTimer.reset) that updates observable state (myTimer.secondsPassed).
Changes in the observable state are propagated precisely to all computations and side effects (TimerView) that depend on the changes being made.
This conceptual picture can be applied to the above example, or any other application using MobX.
Getting started
To learn about the core concepts of MobX using a larger example, check out The gist of MobX page, or take the 10 minute interactive introduction to MobX and React. The philosophy and benefits of the mental model provided by MobX are also described in great detail in the blog posts UI as an afterthought and How to decouple state and UI (a.k.a. you don’t need componentWillMount).
Further resources
- The MobX cheat sheet (£5) is both useful and sponsors the project
- 10 minute interactive introduction to MobX and React
- Egghead.io course, based on MobX 3
- The MobX awesome list – a long list of MobX resources and example projects
The MobX book
The MobX Quick Start Guide ($24.99) by Pavan Podila and Michel Weststrate is available as an ebook, paperback, and on the O'Reilly platform (see preview).
Videos
- Introduction to MobX & React in 2020 by Leigh Halliday, 17 min.
- ReactNext 2016: Real World MobX by Michel Weststrate, 40 min, slides.
- CityJS 2020: MobX, from mutable to immutable, to observable data by Michel Weststrate, 30 min.
- OpenSourceNorth: Practical React with MobX (ES5) by Matt Ruby, 42 min.
- HolyJS 2019: MobX and the unique symbiosis of predictability and speed by Michel Weststrate, 59 min.
- React Amsterdam 2016: State Management Is Easy by Michel Weststrate, 20 min, slides.
- {🚀} React Live 2019: Reinventing MobX by Max Gallo, 27 min.
Credits
MobX is inspired by reactive programming principles, which are for example used in spreadsheets. It is inspired by model–view–viewmodel frameworks like MeteorJS's Tracker, Knockout and Vue.js, but MobX brings transparent functional reactive programming (TFRP, a concept which is further explained in the MobX book) to the next level and provides a standalone implementation. It implements TFRP in a glitch-free, synchronous, predictable and efficient manner.
A ton of credit goes to Mendix, for providing the flexibility and support to maintain MobX and the chance to prove the philosophy of MobX in a real, complex, performance critical applications.
No vulnerabilities found.
Reason
9 commit(s) and 3 issue activity found in the last 90 days -- score normalized to 10
Reason
no dangerous workflow patterns detected
Reason
no binaries found in the repo
Reason
license file detected
Details
- Info: project has a license file: LICENSE:0
- Info: FSF or OSI recognized license: MIT License: LICENSE:0
Reason
security policy file detected
Details
- Info: security policy file detected: SECURITY.md:1
- Info: Found linked content: SECURITY.md:1
- Warn: One or no descriptive hints of disclosure, vulnerability, and/or timelines in security policy
- Info: Found text in security policy: SECURITY.md:1
Reason
Found 15/18 approved changesets -- score normalized to 8
Reason
detected GitHub workflow tokens with excessive permissions
Details
- Warn: no topLevel permission defined: .github/workflows/build_and_test.yml:1
- Warn: no topLevel permission defined: .github/workflows/coveralls.yml:1
- Warn: no topLevel permission defined: .github/workflows/release.yml:1
- Info: no jobLevel write permissions found
Reason
no effort to earn an OpenSSF best practices badge detected
Reason
dependency not pinned by hash detected -- score normalized to 0
Details
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/build_and_test.yml:16: update your workflow using https://app.stepsecurity.io/secureworkflow/mobxjs/mobx/build_and_test.yml/main?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/build_and_test.yml:19: update your workflow using https://app.stepsecurity.io/secureworkflow/mobxjs/mobx/build_and_test.yml/main?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/coveralls.yml:11: update your workflow using https://app.stepsecurity.io/secureworkflow/mobxjs/mobx/coveralls.yml/main?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/coveralls.yml:17: update your workflow using https://app.stepsecurity.io/secureworkflow/mobxjs/mobx/coveralls.yml/main?enable=pin
- Warn: third-party GitHubAction not pinned by hash: .github/workflows/coveralls.yml:31: update your workflow using https://app.stepsecurity.io/secureworkflow/mobxjs/mobx/coveralls.yml/main?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/release.yml:14: update your workflow using https://app.stepsecurity.io/secureworkflow/mobxjs/mobx/release.yml/main?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/release.yml:20: update your workflow using https://app.stepsecurity.io/secureworkflow/mobxjs/mobx/release.yml/main?enable=pin
- Warn: third-party GitHubAction not pinned by hash: .github/workflows/release.yml:32: update your workflow using https://app.stepsecurity.io/secureworkflow/mobxjs/mobx/release.yml/main?enable=pin
- Info: 0 out of 6 GitHub-owned GitHubAction dependencies pinned
- Info: 0 out of 2 third-party GitHubAction dependencies pinned
Reason
project is not fuzzed
Details
- Warn: no fuzzer integrations found
Reason
SAST tool is not run on all commits -- score normalized to 0
Details
- Warn: 0 commits out of 29 are checked with a SAST tool
Reason
104 existing vulnerabilities detected
Details
- Warn: Project is vulnerable to: GHSA-93q8-gq69-wqmw
- Warn: Project is vulnerable to: GHSA-3xgq-45jj-v275
- Warn: Project is vulnerable to: GHSA-f8q6-p94x-37v3
- Warn: Project is vulnerable to: GHSA-gcx4-mw62-g8wm
- Warn: Project is vulnerable to: GHSA-c2qf-rxjj-qqgw
- Warn: Project is vulnerable to: GHSA-67hx-6x53-jw92
- Warn: Project is vulnerable to: GHSA-w8qv-6jwh-64r5
- Warn: Project is vulnerable to: GHSA-9c47-m6qq-7p4h
- Warn: Project is vulnerable to: GHSA-29mw-wpgm-hmr9
- Warn: Project is vulnerable to: GHSA-35jh-r3h4-6jhm
- Warn: Project is vulnerable to: GHSA-xvch-5gv4-984h
- Warn: Project is vulnerable to: GHSA-v88g-cgmw-v5xw
- Warn: Project is vulnerable to: GHSA-fwr7-v2mv-hh25
- Warn: Project is vulnerable to: GHSA-pp7h-53gx-mx7r
- Warn: Project is vulnerable to: GHSA-qwcr-r2fm-qrc7
- Warn: Project is vulnerable to: GHSA-grv7-fg5c-xmjg
- Warn: Project is vulnerable to: GHSA-257v-vj4p-3w2h
- Warn: Project is vulnerable to: GHSA-pxg6-pf52-xh8x
- Warn: Project is vulnerable to: GHSA-gxpj-cx7g-858c
- Warn: Project is vulnerable to: GHSA-w573-4hg7-7wgq
- Warn: Project is vulnerable to: GHSA-qgfr-5hqp-vrw9
- Warn: Project is vulnerable to: GHSA-ff7x-qrg7-qggm
- Warn: Project is vulnerable to: GHSA-6h5x-7c5m-7cr7
- Warn: Project is vulnerable to: GHSA-rv95-896h-c2vc
- Warn: Project is vulnerable to: GHSA-qw6h-vgh9-j6wx
- Warn: Project is vulnerable to: GHSA-8r6j-v8pm-fqw3
- Warn: Project is vulnerable to: MAL-2023-462
- Warn: Project is vulnerable to: GHSA-pfrx-2q88-qq97
- Warn: Project is vulnerable to: GHSA-vfrc-7r7c-w9mx
- Warn: Project is vulnerable to: GHSA-7wwv-vh3v-89cq
- Warn: Project is vulnerable to: GHSA-43f8-2h32-f4cj
- Warn: Project is vulnerable to: GHSA-rc47-6667-2j5j
- Warn: Project is vulnerable to: GHSA-c7qv-q95q-8v27
- Warn: Project is vulnerable to: GHSA-qqgx-2p2h-9c37
- Warn: Project is vulnerable to: GHSA-7r28-3m3f-r2pr
- Warn: Project is vulnerable to: GHSA-r8j5-h5cx-65gg
- Warn: Project is vulnerable to: GHSA-896r-f27r-55mw
- Warn: Project is vulnerable to: GHSA-6c8f-qphg-qjgp
- Warn: Project is vulnerable to: GHSA-76p3-8jx3-jpfq
- Warn: Project is vulnerable to: GHSA-3rfm-jhwj-7488
- Warn: Project is vulnerable to: GHSA-hhq3-ff78-jv3g
- Warn: Project is vulnerable to: GHSA-p6mc-m468-83gw
- Warn: Project is vulnerable to: GHSA-952p-6rrq-rcjv
- Warn: Project is vulnerable to: GHSA-vh95-rmgr-6w4m
- Warn: Project is vulnerable to: GHSA-mwcw-c2x4-8c55
- Warn: Project is vulnerable to: GHSA-rp65-9cf3-cjxr
- Warn: Project is vulnerable to: GHSA-hj48-42vr-x3v9
- Warn: Project is vulnerable to: GHSA-9wv6-86v2-598j
- Warn: Project is vulnerable to: GHSA-rhx6-c78j-4q9w
- Warn: Project is vulnerable to: GHSA-566m-qj78-rww5
- Warn: Project is vulnerable to: GHSA-hwj9-h5mp-3pm3
- Warn: Project is vulnerable to: GHSA-7fh5-64p2-3v2j
- Warn: Project is vulnerable to: GHSA-wvhm-4hhf-97x9
- Warn: Project is vulnerable to: GHSA-h4hr-7fg3-h35w
- Warn: Project is vulnerable to: GHSA-gj77-59wh-66hg
- Warn: Project is vulnerable to: GHSA-hqhp-5p83-hx96
- Warn: Project is vulnerable to: GHSA-3949-f494-cm99
- Warn: Project is vulnerable to: GHSA-x7hr-w5r2-h6wg
- Warn: Project is vulnerable to: GHSA-hrpp-h998-j3pp
- Warn: Project is vulnerable to: GHSA-5q6m-3h65-w53x
- Warn: Project is vulnerable to: GHSA-p8p7-x288-28g6
- Warn: Project is vulnerable to: GHSA-44c6-4v22-4mhx
- Warn: Project is vulnerable to: GHSA-4x5v-gmq8-25ch
- Warn: Project is vulnerable to: GHSA-m6fv-jmcg-4jfg
- Warn: Project is vulnerable to: GHSA-cm22-4g7w-348p
- Warn: Project is vulnerable to: GHSA-jv35-xqg7-f92r
- Warn: Project is vulnerable to: GHSA-g4rg-993r-mgx7
- Warn: Project is vulnerable to: GHSA-4rq4-32rv-6wp6
- Warn: Project is vulnerable to: GHSA-64g7-mvw6-v9qj
- Warn: Project is vulnerable to: GHSA-3jfq-g458-7qm9
- Warn: Project is vulnerable to: GHSA-r628-mhmh-qjhw
- Warn: Project is vulnerable to: GHSA-9r2w-394v-53qc
- Warn: Project is vulnerable to: GHSA-5955-9wpr-37jh
- Warn: Project is vulnerable to: GHSA-qq89-hq3f-393p
- Warn: Project is vulnerable to: GHSA-f5x3-32g6-xq36
- Warn: Project is vulnerable to: GHSA-72xf-g2v4-qvf3
- Warn: Project is vulnerable to: GHSA-7p7h-4mm5-852v
- Warn: Project is vulnerable to: GHSA-9m6j-fcg5-2442
- Warn: Project is vulnerable to: GHSA-hh27-ffr2-f2jc
- Warn: Project is vulnerable to: GHSA-rqff-837h-mm52
- Warn: Project is vulnerable to: GHSA-8v38-pw62-9cw2
- Warn: Project is vulnerable to: GHSA-hgjh-723h-mx2j
- Warn: Project is vulnerable to: GHSA-jf5r-8hm2-f872
- Warn: Project is vulnerable to: GHSA-4vvj-4cpr-p986
- Warn: Project is vulnerable to: GHSA-g78m-2chm-r7qv
- Warn: Project is vulnerable to: GHSA-3h5v-q93c-6h6q
- Warn: Project is vulnerable to: GHSA-7q7g-4xm8-89cq
- Warn: Project is vulnerable to: GHSA-h5c3-5r3r-rr8q
- Warn: Project is vulnerable to: GHSA-rmvr-2pp2-xj38
- Warn: Project is vulnerable to: GHSA-xx4v-prfh-6cgc
- Warn: Project is vulnerable to: GHSA-434g-2637-qmqr
- Warn: Project is vulnerable to: GHSA-49q7-c7j4-3p7m
- Warn: Project is vulnerable to: GHSA-977x-g7h5-7qgw
- Warn: Project is vulnerable to: GHSA-f7q4-pwc6-w24p
- Warn: Project is vulnerable to: GHSA-fc9h-whq2-v747
- Warn: Project is vulnerable to: GHSA-vjh7-7g9h-fjfh
- Warn: Project is vulnerable to: GHSA-78xj-cgh5-2h22
- Warn: Project is vulnerable to: GHSA-2p57-rm9w-gvfp
- Warn: Project is vulnerable to: GHSA-2pr6-76vf-7546
- Warn: Project is vulnerable to: GHSA-8j8c-7jfh-h6hx
- Warn: Project is vulnerable to: GHSA-wrvr-8mpx-r7pp
- Warn: Project is vulnerable to: GHSA-3j8f-xvm3-ffx4
- Warn: Project is vulnerable to: GHSA-j9fq-vwqv-2fm2
- Warn: Project is vulnerable to: GHSA-pqw5-jmp5-px4v
Score
5.2
/10
Last Scanned on 2025-03-03
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.
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