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clean-react-props

v0.4.0

Published

Utility function for passing clean props to DOM elements in React.

Downloads

11,435

Readme

🛁 clean-react-props

npm NPM npm Coveralls github CircleCI Snyk Vulnerabilities for GitHub Repo

Utility functions for passing clean React props to HTML and SVG elements.

Since React 15.2.x, warnings are thrown when attributes are applied to HTMLElements that are not natively supported by React. This utility helps you to prevent those warnings and help you create consistent and clean components. You can read more about it, here.

Install

Via npm:

npm install --save clean-react-props

Via Yarn:

yarn add clean-react-props

How to use

When building components, it’s always a good idea know what properties your component expects and confirm that they handle them properly. But, in some cases your component could end up getting more than it asked for, that's where clean-react-props come in handy.

In order to cleanly compose your components, it's best if they keep the props chain alive (where necessary), and remove the props that are either specific to your component or in addition to what your component expects.

HTMLElements

import cleanProps from 'clean-react-props';

...

  render() {
    const {
      aProp,
      anotherProp,
      children,
    } = this.props;

    return (
      <div {...cleanProps(this.props)}>
        <ChildComponent aProp={aProp} />
        <OtherChildComponent anotherProp={anotherProp} />
        {children}
      </div>
    );
  }

...

SVGElements

React is also opinionated about the attributes that it supports for SVGElements. So, I’ve included a utility that you can use specifically for <svg> tags in your code.

import { cleanSVGProps } from 'clean-react-props';

...

  render() {
    return (
      <svg {...cleanSVGProps(this.props)} xmlns="http://www.w3.org/2000/svg" viewBox="0 0 300 300">
        <circle cx="150" cy="150" r="150" style="fill:#ffda00;" />
        <ellipse cx="95.7" cy="93.5" rx="10" ry="27.5" />
        <ellipse cx="195.7" cy="93.5" rx="10" ry="27.5" />
        <path d="M265 145.5c0 63.5-51.5 115-115 115S35 209 35 145.5" style="fill:none;stroke:#000;stroke-width:6;stroke-miterlimit:10;" />
      </svg>
    );
  }

...

Excluding props

In some cases, it’s handy to be able to exlude valid props from being applied to an element, in the event that prop is maybe used on a child element, or if for some reason that component manages that prop differently. If you run into a spot where you ned to exclude some props, pass an array of the prop names you’d like to exclude.

import cleanProps from 'clean-react-props';

...

  render() {
    const {
      aProp,
      anotherProp,
      children,
    } = this.props;

    return (
      <div {...cleanProps(this.props, ['className'])}>
        <ChildComponent aProp={aProp} />
        <OtherChildComponent anotherProp={anotherProp} />
        {children}
      </div>
    );
  }

...

Specifying custom attributes

React–as of 16.*–now supports custom attributes on components. Which means that as of that release, this package may not as useful as it once was, but it allows you to be specific about the attributes that are applied to the rendered DOM elements. To specify custom attributes that you’d like to retain, just do the following.

import cleanProps from `clean-react-props`;

...

  render() {
    const {
      aProp,
      myCustomAttribute,
      children,
    } = this.props;

    return (
      <div {...cleanProps(this.props, [], ['myCustomAttribute'])}>
        <ChildComponent aProp={aProp} />
        {children}
      </div>
    );
  }

...

License

MIT © Ryan Hefner