🦀 JSX control statements for swc

Original idea: babel-plugin-jsx-control-statements

Installation

pnpm (recommended):

pnpm i -D swc-plugin-jsx-control-statements

or yarn

yarn add -D swc-plugin-jsx-control-statements

Configure `swc`

In your SWC config, you have to add to jsc.experimental.plugins - ['swc-plugin-jsx-control-statements', {}], like in the following code:

jsc: {
    experimental: {
        plugins: [
            ['swc-plugin-jsx-control-statements', {}],
        ],
    },
},

Usage

`<If>` tag

import React from 'react';

const Greeting = () => {
  const [closed, setClosed] = useState(false);
  
  return (
      <>
          <If condition={!closed}>
              Hello,
          </If>
          World
          <If condition={!closed}>
            <button onClick={() => setClosed(true)}>Close</button>
          </If>
      </>
  )
};

`<Choose>` tag (if - else if - else condition)

import React from 'react';

const Greeting = () => {
  const [closed, setClosed] = useState(false);
  
  return (
      <>
          <Choose>
              <When condition={!closed}>
                  Hello,
              </When>
              <Otherwise>
                  Bye,
              </Otherwise>
          </Choose>
          World
          <If condition={!closed}>
            <button onClick={() => setClosed(true)}>Close</button>
          </If>
      </>
  )
};

For Tag

Define <For> like so:

  // you must provide the key attribute yourself
  <For each="item" of={ this.props.items }>
    <span key={ item.id }>{ item.title }</span>
  </For>

  // using the index as key attribute is not stable if the array changes
  <For each="item" index="idx" of={ [1,2,3] }>
    <span key={ idx }>{ item }</span>
    <span key={ idx + '_2' }>Static Text</span>
  </For>

With Tag

Used to assign values to local variables:

// simple
<With foo={ 47 } bar={ 'test' }>
  <span>{ foo }</span>
  <span>{ bar }</span>
</With>

// nested
<With foo={ 47 }>
  <With bar={ 'test' }>
    <span>{ foo }</span>
    <span>{ bar }</span>
  </With>
</With>

Zian502/swc-plugin-jsx-control-statements