# React Intersection Loader

Lazy load your components only when they're visible.

[![release](https://badgen.net/github/release/tzachbon/react-intersection-loader)](https://github.com/tzachbon/react-intersection-loader/releases)
[![checks](https://badgen.net/github/checks/tzachbon/react-intersection-loader)](https://github.com/tzachbon/react-intersection-loader/actions)
[![version](https://badgen.net/npm/v/react-intersection-loader)](https://www.npmjs.com/package/react-intersection-loader)

![react-intersection-loader-demo](https://github.com/tzachbon/react-intersection-loader/blob/master/react-intersection-loader.gif?raw=true)

```tsx
import { intersectionLoader } from 'react-intersection-loader';

// This will be imported (lazy loaded) only when the user is about to see it.
const MyComponent = intersectionLoader(() => import('./MyComponent'));

export default function App() {
  return (
    <div>
      <div
        style={{
          width: '100vw',
          height: '100vh',
        }}
      >
        <h1>I am a viewport size</h1>
      </div>
      <MyComponent />
    </div>
  );
}

```

### Support

Since this uses react, support verity of use cases is a most.
#### React

Currently only supported with hooks, react `>=16.8.0`

#### SSR (Server-side rendering)

Full support of SSR and hydration!

## Examples

Testing is a top priority. Therefore I created fixtures with various use-cases of projects that use this library.
You can check it out [here](./packages/react-intersection-loader/test/fixtures/).\
\
I build the fixtures using [webpack](https://webpack.js.org/), serve them and test them with [playwright](https://playwright.dev/).



## Installation

```sh
npm i react-intersection-loader
```
or

```sh
yarn add react-intersection-loader
```


Load react component lazily when the component is visible. 

Socket Acquires Coana to Bring Reachability Analysis to Every Appsec Team

react-intersection-loader

Load react component lazily when the component is visible

tzachb

(Experimental) An ambiguous license classifier was found.

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Ambiguous License Classifier

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Bad semver

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Bidirectional unicode control characters

This package has multiple bin scripts with the same name. This can cause non-deterministic behavior when installing or could be a sign of a supply chain attack.

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Bin script confusion

Semantic versions published out of chronological order.

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Chronological version anomaly

Project maintainer's SSH key has been compromised.

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(Experimental) Copyleft license information was found.

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Contains a Critical Common Vulnerability and Exposure (CVE).

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Title

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Uses debug, reflection and dynamic code execution features.

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Debug access

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Deprecated

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Deprecated SPDX exception

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Deprecated license

Package name is similar to other popular packages and may not be the package you want.

What is a typosquat?

Possible typosquat attack

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What is dynamic require?

Dynamic require

Package does not contain any code. It may be removed, is name squatting, or the result of a faulty package publish.

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Empty package

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Name

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File dependency

Accesses the file system, and could potentially read sensitive data.

What is filesystem access?

Filesystem access

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What are wildcard dependencies?

Wildcard dependency

Contains a dependency which resolves to a remote git URL. Dependencies fetched from git URLs are not immutable and can be used to inject untrusted code or reduce the likelihood of a reproducible install.

What are git dependencies?

Git dependency

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GitHub dependency

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AI-detected potential malware

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AI-detected potential security risk

Contains native code (e.g., compiled binaries or shared libraries). Including native code can obscure malicious behavior.

Why is native code a concern?

Native code

Contains high entropy strings. This could be a sign of encrypted data, leaked secrets or obfuscated code.

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High entropy strings

Contains unicode homoglyphs which can be used in supply chain confusion attacks.

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Unicode homoglyphs

Contains a dependency which resolves to a remote HTTP URL which could be used to inject untrusted code and reduce overall package reliability.

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HTTP dependency

Install scripts are run when the package is installed. The majority of malware in npm is hidden in install scripts.

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Install scripts

Package has an invalid manifest file and can cause installation problems if you try to use it.

What is an invalid manifest file?

Invalid manifest file

Source files contain invisible characters. This could indicate source obfuscation or a supply chain attack.

What are invisible characters?

Invisible chars

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What is a license change?

License change

(Experimental) Contains an SPDX license exception.

What is a license exception?

License exception

This package is not allowed per your license policy. Review the package's license to ensure compliance.

What is a license policy violation?

License Policy Violation

Contains long string literals, which may be a sign of obfuscated or packed code.

What's wrong with long strings?

Long strings

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

What is a major refactor?

Major refactor

This package is malware. We have asked the package registry to remove it.

What is known malware?

Known malware

This package has inconsistent metadata. This could be malicious or caused by an error when publishing the package.

What is manifest confusion?

Manifest confusion

Contains a medium severity Common Vulnerability and Exposure (CVE).

What is a medium CVE?

Medium CVE

Contains a low severity Common Vulnerability and Exposure (CVE).

What is a mild CVE?

Low CVE

This package contains minified code. This may be harmless in some cases where minified code is included in packaged libraries, however packages on npm should not minify code.

What's wrong with minified code?

Minified code

(Experimental) A package's licensing information has fine-grained problems.

Misc. License Issues

The package was published by an npm account that no longer exists.

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Non-existent author

A required dependency is not declared in package.json and may prevent the package from working.

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Missing dependency

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Missing license

This package is missing its tarball. It could be removed from the npm registry or there may have been an error when publishing.

What is a missing tarball?

Missing package tarball

(Experimental) Package contains multiple licenses.

What is a mixed license?

Mixed license

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What is a modified license exception?

Modified license exception

(Experimental) Package contains a modified version of an SPDX license. Please read carefully before using this code.

What is a modified license?

Modified license

What is network access?

Network access

A new npm collaborator published a version of the package for the first time. New collaborators are usually benign additions to a project, but do indicate a change to the security surface area of a package.

What is new author?

New author

Package does not specify a list of contributors or an author in package.json.

Why is contributor and author data important?

No contributors or author data

Package does not have a linked bug tracker in package.json.

Why are bug trackers important?

No bug tracker

(Experimental) License information could not be found.

No License Found

Package does not have a README. This may indicate a failed publish or a low quality package.

Why are READMEs important?

No README

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Why are missing repositories important?

No repository

Package does not have any tests. This is a strong signal of a poorly maintained or low quality package.

What does no tests mean?

No tests

Package is not semver >=1. This means it is not stable and does not support ^ ranges.

react-intersection-loader

React Intersection Loader

Support

React

SSR (Server-side rendering)

Examples

Installation

Keywords

Related posts

react-intersection-loader

React Intersection Loader

Support

React

SSR (Server-side rendering)

Examples

Installation

Keywords

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