@stencil/less

This package is used to easily precompile Less files within the Stencil components.

First, npm install within the project:

npm install @stencil/less --save-dev

Next, within the project's stencil.config.js file, import the plugin and add it to the config's plugins config:

stencil.config.ts

import { Config } from '@stencil/core';
import { less } from '@stencil/less';

export const config: Config = {
  plugins: [
    less()
  ]
};

During development, this plugin will kick-in for .less style urls, and precompile them to CSS.

Options

Plugins

The plugins config is an array of Less plugins.

const LessPluginAutoPrefix = require('less-plugin-autoprefix');

exports.config = {
  plugins: [
    less({
      plugins: [
        new LessPluginAutoPrefix({
          browsers: ['last 2 versions']
        })
      ]
    })
  ]
};

Inject Globals Less Paths

The injectGlobalPaths config is an array of paths that automatically get added as @import declarations to all components. This can be useful to inject Less variables, mixins and functions to override defaults of external collections. Relative paths within injectGlobalPaths should be relative to the stencil.config.js file.

exports.config = {
  plugins: [
    less({
      injectGlobalPaths: [
        'src/globals/variables.less',
        'src/globals/mixins.less'
      ]
    })
  ]
};

Note that each of these files are always added to each component, so in most cases they shouldn't contain CSS because it'll get duplicated in each component. Instead, injectGlobalPaths should only be used for Less variables, mixins and functions, but not contain any CSS.

Related

• Less
• LessPluginAutoPrefix
• Stencil
• Stencil Worldwide Slack
• Ionic Components
• Ionicons

Contributing

Please see our Contributor Code of Conduct for information on our rules of conduct.