style-extractor v1.0.3

Style Extractor

Extract all inline CSS from your HTML generating a css file for it.

How to use

• First install the lib

  npm install --save style-extractor

• Import the lib and use it

  import { extractStyle } from 'style-extractor';
  
  const { html, css } = extractStyle(`html input here`)
  
  console.log(html, css)

  Options

  Option	Values	Default
  strategy: Strategy	Strategy.atomic | Strategy.scoped	Strategy.atomic
  classPrefix: string	string value	es-

  To configure the options you can pass an object as a second parameter, example:

  import { extractStyle } from 'style-extractor';
  import type { Strategy } from 'style-extractor';
  
  const { html, css } = extractStyle(
    `html input here`,
    { 
      strategy: Strategy.scoped, 
      classPrefix: 'my-prefix-' 
    }
  )
  
  console.log(html, css)

Strategies

Scoped

For each inline style attribute found, the lib will generate a unique class with the whole value.

e.g

Given the input:

 <div style="width: 100%;border: red;">
  <style>
    h1 { line-height: 20px; }
  </style>
  <h1 style="color: white; font-size: 14px;">title</h1>  
</div>

The HTML output would be:

  <div class="es-chrTOf">
    <h1 class="es-dfoHTq">title</h1>  
  </div>

and the CSS output would be:

.es-chrTOf { width: 100%;border: red; }
h1 { line-height: 20px; }
.es-dfoHTq { color: white; font-size: 14px; }

Atomic

For each css declaration found, the lib will create a unique class and reuse the class on all elements that also have the same css declaration value.

e.g

Given the input:

 <div style="width: 100%;border: red;">
  <style>
    h1 { line-height: 20px; }
  </style>
  <h1 style="color: white; font-size: 14px;">title</h1>  
</div>

The HTML output would be:

 <div class="es-cwtpWi es-gSvEpd">
  <h1 class="es-jTfyaK es-dhZwgM">title</h1>  
</div>

and the CSS output would be:

 .es-cwtpWi { width:100%}
 .es-gSvEpd { border:red}
 h1 { line-height: 20px; }
 .es-jTfyaK { color:white}
 .es-dhZwgM { font-size:14px}

@TODOS

• Option to create file in disk