npmpackage.info

@luchanso/react-fast-compare

fastest deep equal comparison for React

3.0.1

MIT

JavaScript

663.00 B

818 1.7

Installations

npm install @luchanso/react-fast-compare

Developer Guide

BETA

Typescript

Yes

Module System

CommonJS

Node Version

10.9.0

NPM Version

6.4.0 Score

67.8

Supply Chain

99.2

Quality

75.1

Maintenance

100

Vulnerability

100

License

Pull Requests

Open

0

Total

1

Closed

1

Issues

Open

0

Total

0

Closed

0

Releases

Unable to fetch releases

Contributors

Unable to fetch Contributors

View all 1 contributors

Languages

JavaScript

JavaScript (100%)

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Developer

luchanso

Download Statistics

Total Downloads

818

Last Day

Last Week

Last Month

Last Year

GitHub Statistics

1 Stars

52 Commits

3 Watching

3 Branches

1 Contributors

Bundle Size

1.24 kB

Minified

663.00 B

Minified + Gzipped

Bundlephobia

Maintainers

Package Meta Information

Latest Version

3.0.1

Package Id

@luchanso/react-fast-compare@3.0.1

Unpacked Size

11.75 kB

Size

4.71 kB

File Count

NPM Version

6.4.0

Node Version

10.9.0

Total Downloads

Cumulative downloads

Total Downloads

818

Last day

Compared to previous day

Last week

-20%

Compared to previous week

Last month

200%

Compared to previous month

Last year

-22%

Compared to previous year

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Versions

react-fast-compare

The fastest deep equal comparison for React. Really fast general-purpose deep comparison. Great forshouldComponentUpdate. This is a fork of the brilliant fast-deep-equal with some extra handling for React.

benchmark chart

(Check out the benchmarking details.)

Install

1$ yarn add @luchanso/react-fast-compare
2# or
3$ npm install @luchanso/react-fast-compare

Highlights

ES5 compatible; works in node.js (0.10+) and browsers (IE9+)
deeply compares any value (besides objects with circular references)
handles React-specific circular references, like elements
checks equality Date and RegExp objects
should be just as fast as fast-deep-equal for general use, and faster for React use
small: under 600 bytes minified+gzipped

Usage

1const isEqual = require("@luchanso/react-fast-compare");
2
3// general usage
4console.log(isEqual({ foo: "bar" }, { foo: "bar" })); // true
5
6// react usage
7class ExpensiveRenderer extends React.Component {
8  shouldComponentUpdate(nextProps) {
9    return !isEqual(this.props, nextProps);
10  }
11  render() {
12    // ...
13  }
14}

Or like Hight ordered component

1const performance = require("@luchanso/react-fast-compare").performance;
2
3class ExpensiveRenderer extends React.Component {
4  render() {
5    // ...
6  }
7}
8
9export default performance()(ExpensiveRenderer);

Do I Need `shouldComponentUpdate`?

What's faster than a really fast deep comparison? No deep comparison at all.

—This Readme

Deep checks in React's shouldComponentUpdate should not be used blindly. First, see if a PureComponent would work for you. If it won't (if you need deep checks), it's wise to make sure you've correctly indentified the bottleneck in your application by profiling the performance. After you've determined that you do need deep equality checks and you've identified the minimum number of places to apply them, then this library may be for you! For more information about making your app faster, check out the Optimizing Performance section of the React docs.

Benchmarking this Library

All tests carried out locally on a MacBook. The absolute values are much less important than the relative differences between packages.

Benchmarking source can be found here. Each "operation" consists of running all relevant tests. The React benchmark uses both the generic tests and the react tests; these runs will be slower simply because there are more tests in each operation.

Generic Data

react-fast-compare x 207,503 ops/sec ±0.54% (92 runs sampled)
fast-deep-equal x 195,006 ops/sec ±0.70% (91 runs sampled)
lodash.isEqual x 43,778 ops/sec ±0.55% (91 runs sampled)
nano-equal x 198,036 ops/sec ±0.37% (95 runs sampled)
shallow-equal-fuzzy x 173,023 ops/sec ±0.59% (95 runs sampled)
  fastest: react-fast-compare

react-fast-compare and fast-deep-equal should be the same speed for these tests; any difference is just noise. react-fast-compare won't be faster than fast-deep-equal, because it's based on it.

React and Generic Data

react-fast-compare x 187,628 ops/sec ±0.58% (93 runs sampled)
fast-deep-equal x 477 ops/sec ±0.55% (91 runs sampled)
lodash.isEqual x 35,100 ops/sec ±0.16% (95 runs sampled)
nano-equal x 468 ops/sec ±0.53% (94 runs sampled)
shallow-equal-fuzzy x 684 ops/sec ±0.43% (92 runs sampled)
  fastest: react-fast-compare

Three of these packages cannot handle comparing React elements (which are circular): fast-deep-equal, nano-equal, and shallow-equal-fuzzy.

Running Benchmarks

1$ yarn install
2$ yarn run benchmark

fast-deep-equal Versioning

react-fast-compare@3.0.0 tracks fast-deep-equal@2.0.1

License

MIT

Contributing

Please see our contributions guide.

No vulnerabilities found.

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.

0

Code-Review

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

0

Maintained

Determines if the project is "actively maintained".

0

SAST

Determines if the project uses static code analysis.

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

Branch-Protection

Determines if the default and release branches are protected with GitHub's branch protection settings.

0

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

Reason

142 existing vulnerabilities detected

Details

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-42xw-2xvc-qx8m
Warn: Project is vulnerable to: GHSA-4w2v-q235-vp99
Warn: Project is vulnerable to: GHSA-cph5-m8f7-6c5x
Warn: Project is vulnerable to: GHSA-wf5p-g6vw-rhxx
Warn: Project is vulnerable to: GHSA-67hx-6x53-jw92
Warn: Project is vulnerable to: GHSA-pp7h-53gx-mx7r
Warn: Project is vulnerable to: GHSA-qwcr-r2fm-qrc7
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-x9w5-v3q2-3rhw
Warn: Project is vulnerable to: GHSA-hc9w-4p87-j549
Warn: Project is vulnerable to: GHSA-wg6g-ppvx-927h
Warn: Project is vulnerable to: GHSA-c6rq-rjc2-86v2
Warn: Project is vulnerable to: GHSA-pxg6-pf52-xh8x
Warn: Project is vulnerable to: GHSA-3xgq-45jj-v275
Warn: Project is vulnerable to: GHSA-rq8g-5pc5-wrhr
Warn: Project is vulnerable to: GHSA-9vvw-cc9w-f27h
Warn: Project is vulnerable to: GHSA-gxpj-cx7g-858c
Warn: Project is vulnerable to: GHSA-w573-4hg7-7wgq
Warn: Project is vulnerable to: GHSA-hr2v-3952-633q
Warn: Project is vulnerable to: GHSA-9j49-mfvp-vmhm
Warn: Project is vulnerable to: GHSA-h6ch-v84p-w6p9
Warn: Project is vulnerable to: GHSA-vh7m-p724-62c2
Warn: Project is vulnerable to: GHSA-r9p9-mrjm-926w
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-j4f2-536g-r55m
Warn: Project is vulnerable to: GHSA-r7qp-cfhv-p84w
Warn: Project is vulnerable to: GHSA-qrmc-fj45-qfc2
Warn: Project is vulnerable to: GHSA-74fj-2j2h-c42q
Warn: Project is vulnerable to: GHSA-pw2r-vq6v-hr8c
Warn: Project is vulnerable to: GHSA-jchw-25xp-jwwc
Warn: Project is vulnerable to: GHSA-cxjh-pqwp-8mfp
Warn: Project is vulnerable to: GHSA-8r6j-v8pm-fqw3
Warn: Project is vulnerable to: MAL-2023-462
Warn: Project is vulnerable to: GHSA-xf7w-r453-m56c
Warn: Project is vulnerable to: GHSA-qh2h-chj9-jffq
Warn: Project is vulnerable to: GHSA-q42p-pg8m-cqh6
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-6x33-pw7p-hmpq
Warn: Project is vulnerable to: GHSA-86wf-436m-h424
Warn: Project is vulnerable to: GHSA-8w57-jfpm-945m
Warn: Project is vulnerable to: GHSA-8g7p-74h8-hg48
Warn: Project is vulnerable to: GHSA-pc5p-h8pf-mvwp
Warn: Project is vulnerable to: GHSA-qqgx-2p2h-9c37
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-896r-f27r-55mw
Warn: Project is vulnerable to: GHSA-9c47-m6qq-7p4h
Warn: Project is vulnerable to: GHSA-282f-qqgm-c34q
Warn: Project is vulnerable to: GHSA-675m-85rw-j3w4
Warn: Project is vulnerable to: GHSA-7x7c-qm48-pq9c
Warn: Project is vulnerable to: GHSA-rc3x-jf5g-xvc5
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-jf85-cpcp-j695
Warn: Project is vulnerable to: GHSA-fvqr-27wr-82fm
Warn: Project is vulnerable to: GHSA-4xc9-xhrj-v574
Warn: Project is vulnerable to: GHSA-x5rq-j2xg-h7qm
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-82v2-mx6x-wq7q
Warn: Project is vulnerable to: GHSA-4xcv-9jjx-gfj3
Warn: Project is vulnerable to: GHSA-952p-6rrq-rcjv
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-fhjf-83wg-r2j9
Warn: Project is vulnerable to: GHSA-w9mr-4mfr-499f
Warn: Project is vulnerable to: GHSA-4c7m-wxvm-r7gc
Warn: Project is vulnerable to: GHSA-pch5-whg9-qr2r
Warn: Project is vulnerable to: GHSA-r683-j2x4-v87g
Warn: Project is vulnerable to: GHSA-48ww-j4fc-435p
Warn: Project is vulnerable to: GHSA-hwqf-gcqm-7353
Warn: Project is vulnerable to: GHSA-9h6g-pr28-7cqp
Warn: Project is vulnerable to: GHSA-6fx8-h7jm-663j
Warn: Project is vulnerable to: GHSA-hj48-42vr-x3v9
Warn: Project is vulnerable to: GHSA-9wv6-86v2-598j
Warn: Project is vulnerable to: GHSA-hrpp-h998-j3pp
Warn: Project is vulnerable to: GHSA-6g33-f262-xjp4
Warn: Project is vulnerable to: GHSA-35q2-47q7-3pc3
Warn: Project is vulnerable to: GHSA-p8p7-x288-28g6
Warn: Project is vulnerable to: GHSA-hjp8-2cm3-cc45
Warn: Project is vulnerable to: GHSA-c2qf-rxjj-qqgw
Warn: Project is vulnerable to: GHSA-h9rv-jmmf-4pgx
Warn: Project is vulnerable to: GHSA-hxcc-f52p-wc94
Warn: Project is vulnerable to: GHSA-4g88-fppr-53pp
Warn: Project is vulnerable to: GHSA-4jqc-8m5r-9rpr
Warn: Project is vulnerable to: GHSA-g4rg-993r-mgx7
Warn: Project is vulnerable to: GHSA-fxwf-4rqh-v8g3
Warn: Project is vulnerable to: GHSA-25hc-qcg6-38wj
Warn: Project is vulnerable to: GHSA-xfhh-g9f5-x4m4
Warn: Project is vulnerable to: GHSA-qm95-pgcg-qqfq
Warn: Project is vulnerable to: GHSA-cqmj-92xf-r6r9
Warn: Project is vulnerable to: GHSA-vx3p-948g-6vhq
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-f523-2f5j-gfcg
Warn: Project is vulnerable to: GHSA-72xf-g2v4-qvf3
Warn: Project is vulnerable to: GHSA-884p-74jh-xrg2
Warn: Project is vulnerable to: GHSA-j7fq-p9q7-5wfv
Warn: Project is vulnerable to: GHSA-xc7v-wxcw-j472
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-cf4h-3jhx-xvhq
Warn: Project is vulnerable to: GHSA-mgfv-m47x-4wqp
Warn: Project is vulnerable to: GHSA-wr3j-pwj9-hqq6
Warn: Project is vulnerable to: GHSA-3h5v-q93c-6h6q
Warn: Project is vulnerable to: GHSA-72mh-269x-7mh5
Warn: Project is vulnerable to: GHSA-h4j5-c7cj-74xg
Warn: Project is vulnerable to: GHSA-c4w7-xm78-47vh
Warn: Project is vulnerable to: GHSA-p9pc-299p-vxgp

Score

1.7

/10

Last Scanned on 2025-02-03

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.

Learn More

@luchanso/react-fast-compare

Installations

Developer Guide

Yes

CommonJS

10.9.0

6.4.0

Score

Pull Requests

0

1

1

Issues

0

0

0

Releases

Unable to fetch releases

Contributors

Unable to fetch Contributors

Languages

Developer

luchanso

Download Statistics

GitHub Statistics

Bundle Size

1.24 kB

663.00 B

Maintainers

Package Meta Information

Total Downloads

818

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dev Dependencies

react-fast-compare

Install

Highlights

Usage

Do I Need shouldComponentUpdate?

Benchmarking this Library

Generic Data

React and Generic Data

Running Benchmarks

fast-deep-equal Versioning

License

Contributing

10

10

0

0

0

0

0

0

0

0

1.7

/10

Do I Need `shouldComponentUpdate`?