Andrew Rhodes

Andrew Rhodes

1614150300

React Native Specific Accessibility Linting Rules

eslint-plugin-react-native-a11y

Eslint-plugin-react-native-a11y is a collection of React Native specific ESLint rules for identifying accessibility issues. Building upon the foundation set down by eslint-plugin-jsx-a11y, eslint-plugin-react-native-a11y detects a few of the most commonly made accessibility issues found in react native apps. These rules make it easier for your apps to be navigable by users with screen readers.

Setup

Pre-Requisites

Before starting, check you already have ESLint as a devDependency of your project.

Projects created using react-native init will already have this, but for Expo depending on your template you may need to follow ESLint’s installation instructions.

Installation

Next, install eslint-plugin-react-native-a11y:

npm install eslint-plugin-react-native-a11y --save-dev

# or

yarn add eslint-plugin-react-native-a11y --dev

Note: If you installed ESLint globally (using the -g flag in npm, or the global prefix in yarn) then you must also install eslint-plugin-react-native-a11y globally.

Configuration

This plugin exposes four recommended configs.

Name Description
basic Only use basic validation rules common to both iOS & Android
ios Use all rules from “basic”, plus iOS-specific extras
android Use all rules from “basic”, plus Android-specific extras
all Use all rules from “basic”, plus iOS-specific extras, plus Android-specific extras

If your project only supports a single platform, you may get the best experience using a platform-specific config. This will both avoid reporting issues which do not affect your platform and also results in slightly faster linting for larger projects.

If you are unsure which one to use, in most cases all can be safely used.

Add the config you want to use to the extends section of your ESLint config using the pattern plugin:react-native-a11y/ followed by your config name, as shown below:

// .eslintrc.js

module.exports = {
  root: true,
  extends: [
    '@react-native-community',
    'plugin:react-native-a11y/ios'
  ]
};

Alternatively if you do not want to use one of the pre-defined configs — or want to override the behaviour of a specific rule — you can always include a list rules and configurations in the rules section of your ESLint config.

// .eslintrc.js

module.exports = {
  root: true,
  extends: [
    '@react-native-community',
  ],
  rules: {
    'react-native-a11y/rule-name': 2
  }
};

For more information on configuring behaviour of an individual rule, please refer to the ESLint docs

Supported Rules

Basic

iOS

Android

Rule Options

The following options are available to customize the recommended rule set.

Custom Touchables

react-native-a11y/has-accessibility-props and react-native-a11y/no-nested-touchables allow you to define an array of names for custom components that you may have that conform to the same accessibility interfaces as Touchables.

"react-native-a11y/has-accessibility-props": [
  "error",
  {
    "touchables": ["TouchableCustom"]
  }
]
Custom Invertable Components (iOS)

react-native-a11y/has-valid-accessibility-ignores-invert-colors allows you to optionally define an Array of component names to check in addition to <Image />.

For more information, see the rule docs.

"react-native-a11y/has-valid-accessibility-ignores-invert-colors": [
  "error",
  {
    "invertableComponents": [
      "FastImage",
    ]
  }
]

Creating a new rule

If you are developing new rules for this project, you can use the create-rule script to scaffold the new files.

$ ./scripts/create-rule.js my-new-rule

Attribution

This project started as a fork of eslint-plugin-jsx-a11y and a lot of the work was carried out by its contributors, to whom we owe a lot!

License

eslint-plugin-react-native-a11y is licensed under the MIT License.

Maintenance Status

Active: Formidable is actively working on this project, and we expect to continue for work for the foreseeable future. Bug reports, feature requests and pull requests are welcome.

Download Details:

Author: FormidableLabs

Source Code: https://github.com/FormidableLabs/eslint-plugin-react-native-a11y

#react-native #react #mobile-apps

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Buddha Community

React Native Specific Accessibility Linting Rules
Autumn Blick

Autumn Blick

1598839687

How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

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Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

  • Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
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  • The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

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hourly developer

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Hire Dedicated React Native Developer

Have you ever thought of having your own app that runs smoothly over multiple platforms?

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Juned Ghanchi

1621573085

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WebClues Infotech

WebClues Infotech

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Hire Dedicated React Native Developers - WebClues Infotech

Being one of the emerging frameworks for app development the need to develop react native apps has increased over the years.

Looking for a react native developer?

Worry not! WebClues infotech offers services to Hire React Native Developers for your app development needs. We at WebClues Infotech offer a wide range of Web & Mobile App Development services based o your business or Startup requirement for Android and iOS apps.

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TopDevelopers Co

TopDevelopers Co

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Factors affecting the cost of hiring a React Native developer in USA - TopDevelopers.co

Want to develop app using React Native? Here are the tips that will help to reduce the cost of react native app development for you.
Cost is a major factor in helping entrepreneurs take decisions about investing in developing an app and the decision to hire react native app developers in USA can prove to be fruitful in the long run. Using react native for app development ensures a wide range of benefits to your business. Understanding your business and working on the aspects to strengthen business processes through a cost-efficient mobile app will be the key to success.

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