Gathering detailed insights and metrics for react-lifecycles-compat
Gathering detailed insights and metrics for react-lifecycles-compat
Backwards compatibility polyfill for React class components
Installations
npm install react-lifecycles-compatDeveloper Guide
BETA
Typescript
No
Module System
CommonJS
Node Version
8.11.1
NPM Version
5.6.0
Score
99.6
Supply Chain
85
Quality
77.8
Maintenance
100
Vulnerability
100
License
Releases
Unable to fetch releases
Languages
1
JavaScript
JavaScript (100%)
Developer
reactjs
Download Statistics
Total Downloads
1,831,357,175
Last Day
279,604
Last Week
6,290,805
Last Month
27,349,479
Last Year
306,206,910
GitHub Statistics
MIT License
459 Stars
105 Commits
26 Forks
15 Watchers
29 Branches
16 Contributors
Updated on Mar 03, 2025
Bundle Size
2.45 kB
Minified
919.00 B
Minified + Gzipped
Maintainers
5
Package Meta Information
Latest Version
3.0.4
Package Id
react-lifecycles-compat@3.0.4
Size
5.86 kB
NPM Version
5.6.0
Node Version
8.11.1
Published on
May 11, 2018
Total Downloads
Cumulative downloads
Total Downloads
1,831,357,175
Last Day
-12.9%
279,604
Compared to previous day
Last Week
-9.2%
6,290,805
Compared to previous week
Last Month
2.9%
27,349,479
Compared to previous month
Last Year
-16.2%
306,206,910
Compared to previous year
Weekly Downloads
Monthly Downloads
Yearly Downloads
react-lifecycles-compat
What is this project?
React version 17 will deprecate several of the class component API lifecycles: componentWillMount, componentWillReceiveProps, and componentWillUpdate. (Read the Update on Async rendering blog post to learn more about why.) A couple of new lifecycles are also being added to better support async rendering mode.
Typically, this type of change would require third party libraries to release a new major version in order to adhere to semver. However, the react-lifecycles-compat polyfill offers a way to use the new lifecycles with older versions of React as well (0.14.9+) so no breaking release is required. This enables shared libraries to support both older and newer versions of React simultaneously.
How can I use the polyfill
First, install the polyfill from NPM:
1# Yarn 2yarn add react-lifecycles-compat 3 4# NPM 5npm install react-lifecycles-compat --save
Next, update your component and replace any of the deprecated lifecycles with new ones introduced with React 16.3. (Refer to the React docs for examples of how to use the new lifecycles.)
Lastly, use the polyfill to make the new lifecycles work with older versions of React:
1import React from 'react'; 2import {polyfill} from 'react-lifecycles-compat'; 3 4class ExampleComponent extends React.Component { 5 static getDerivedStateFromProps(nextProps, prevState) { 6 // Normally this method would only work for React 16.3 and newer, 7 // But the polyfill will make it work for older versions also! 8 } 9 10 getSnapshotBeforeUpdate(prevProps, prevState) { 11 // Normally this method would only work for React 16.3 and newer, 12 // But the polyfill will make it work for older versions also! 13 } 14 15 // render() and other methods ... 16} 17 18// Polyfill your component so the new lifecycles will work with older versions of React: 19polyfill(ExampleComponent); 20 21export default ExampleComponent;
Which lifecycles are supported?
Currently, this polyfill supports static getDerivedStateFromProps and getSnapshotBeforeUpdate- both introduced in version 16.3.
Validation
Note that in order for the polyfill to work, none of the following lifecycles can be defined by your component: componentWillMount, componentWillReceiveProps, or componentWillUpdate.
Note also that if your component contains getSnapshotBeforeUpdate, componentDidUpdate must be defined as well.
An error will be thrown if any of the above conditions are not met.
No vulnerabilities found.
Reason
no binaries found in the repo
Reason
license file detected
Details
- Info: project has a license file: LICENSE.md:0
- Info: FSF or OSI recognized license: MIT License: LICENSE.md:0
Reason
Found 2/14 approved changesets -- score normalized to 1
Reason
0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
Reason
no effort to earn an OpenSSF best practices badge detected
Reason
security policy file not detected
Details
- Warn: no security policy file detected
- Warn: no security file to analyze
- Warn: no security file to analyze
- Warn: no security file to analyze
Reason
project is not fuzzed
Details
- Warn: no fuzzer integrations found
Reason
branch protection not enabled on development/release branches
Details
- Warn: branch protection not enabled for branch 'master'
Reason
SAST tool is not run on all commits -- score normalized to 0
Details
- Warn: 0 commits out of 23 are checked with a SAST tool
Reason
64 existing vulnerabilities detected
Details
- Warn: Project is vulnerable to: GHSA-v6h2-p8h4-qcjw
- Warn: Project is vulnerable to: GHSA-f8q6-p94x-37v3
- Warn: Project is vulnerable to: GHSA-vh95-rmgr-6w4m
- Warn: Project is vulnerable to: GHSA-xvch-5gv4-984h
- Warn: Project is vulnerable to: GHSA-r683-j2x4-v87g
- Warn: Project is vulnerable to: GHSA-662x-fhqg-9p8v
- Warn: Project is vulnerable to: GHSA-394c-5j6w-4xmx
- Warn: Project is vulnerable to: GHSA-78cj-fxph-m83p
- Warn: Project is vulnerable to: GHSA-fhg7-m89q-25r3
- Warn: Project is vulnerable to: GHSA-mvjj-gqq2-p4hw
- Warn: Project is vulnerable to: GHSA-6chw-6frg-f759
- Warn: Project is vulnerable to: GHSA-v88g-cgmw-v5xw
- Warn: Project is vulnerable to: GHSA-93q8-gq69-wqmw
- Warn: Project is vulnerable to: GHSA-fwr7-v2mv-hh25
- Warn: Project is vulnerable to: GHSA-67hx-6x53-jw92
- Warn: Project is vulnerable to: GHSA-cwfw-4gq5-mrqx
- Warn: Project is vulnerable to: GHSA-g95f-p29q-9xw4
- Warn: Project is vulnerable to: GHSA-grv7-fg5c-xmjg
- Warn: Project is vulnerable to: GHSA-3xgq-45jj-v275
- Warn: Project is vulnerable to: GHSA-rq8g-5pc5-wrhr
- Warn: Project is vulnerable to: GHSA-hr2v-3952-633q
- Warn: Project is vulnerable to: GHSA-qrmc-fj45-qfc2
- Warn: Project is vulnerable to: GHSA-8r6j-v8pm-fqw3
- Warn: Project is vulnerable to: MAL-2023-462
- Warn: Project is vulnerable to: GHSA-w457-6q6x-cgp9
- Warn: Project is vulnerable to: GHSA-62gr-4qp9-h98f
- Warn: Project is vulnerable to: GHSA-f52g-6jhx-586p
- Warn: Project is vulnerable to: GHSA-2cf5-4w76-r9qv
- Warn: Project is vulnerable to: GHSA-3cqr-58rm-57f8
- Warn: Project is vulnerable to: GHSA-g9r4-xpmj-mj65
- Warn: Project is vulnerable to: GHSA-q2c6-c6pm-g3gh
- Warn: Project is vulnerable to: GHSA-765h-qjxv-5f44
- Warn: Project is vulnerable to: GHSA-f2jv-r9rf-7988
- Warn: Project is vulnerable to: GHSA-44pw-h2cw-w3vq
- Warn: Project is vulnerable to: GHSA-jp4x-w63m-7wgm
- Warn: Project is vulnerable to: GHSA-c429-5p7v-vgjp
- Warn: Project is vulnerable to: GHSA-43f8-2h32-f4cj
- Warn: Project is vulnerable to: GHSA-qqgx-2p2h-9c37
- Warn: Project is vulnerable to: GHSA-896r-f27r-55mw
- Warn: Project is vulnerable to: GHSA-9c47-m6qq-7p4h
- Warn: Project is vulnerable to: GHSA-p6mc-m468-83gw
- Warn: Project is vulnerable to: GHSA-29mw-wpgm-hmr9
- Warn: Project is vulnerable to: GHSA-35jh-r3h4-6jhm
- Warn: Project is vulnerable to: GHSA-4xcv-9jjx-gfj3
- Warn: Project is vulnerable to: GHSA-f9cm-qmx5-m98h
- Warn: Project is vulnerable to: GHSA-7wpw-2hjm-89gp
- Warn: Project is vulnerable to: GHSA-952p-6rrq-rcjv
- Warn: Project is vulnerable to: GHSA-5fw9-fq32-wv5p
- Warn: Project is vulnerable to: GHSA-hj48-42vr-x3v9
- Warn: Project is vulnerable to: GHSA-hrpp-h998-j3pp
- Warn: Project is vulnerable to: GHSA-6g33-f262-xjp4
- Warn: Project is vulnerable to: GHSA-p8p7-x288-28g6
- Warn: Project is vulnerable to: GHSA-gcx4-mw62-g8wm
- Warn: Project is vulnerable to: GHSA-c2qf-rxjj-qqgw
- Warn: Project is vulnerable to: GHSA-mf6x-7mm4-x2g7
- Warn: Project is vulnerable to: GHSA-j44m-qm6p-hp7m
- Warn: Project is vulnerable to: GHSA-3jfq-g458-7qm9
- Warn: Project is vulnerable to: GHSA-5955-9wpr-37jh
- Warn: Project is vulnerable to: GHSA-f5x3-32g6-xq36
- Warn: Project is vulnerable to: GHSA-jgrx-mgxx-jf9v
- Warn: Project is vulnerable to: GHSA-72xf-g2v4-qvf3
- Warn: Project is vulnerable to: GHSA-3h5v-q93c-6h6q
- Warn: Project is vulnerable to: GHSA-c4w7-xm78-47vh
- Warn: Project is vulnerable to: GHSA-p9pc-299p-vxgp
Score
1.9
/10
Last Scanned on 2025-06-23
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