less-vars-to-js

Parse a less variable list and its dependencies and return a map of all resolved variables

Use

Install using

npm install @hon2a/less-vars-to-js

Use to load file and all its imports, resolve all variables, and collect them. E.g. the following setup:

<CWD>/node_modules/some-lib/dist/vars.less

@primary-color: green;
@error-color: brickred; 

src/style/theme.less

@import '~some-lib/dist/vars';
@primary-color: blue;

src/style/variables.less

@import './theme';
@secondary-color: darken(@primary-color, 10);
@match-rate-low-color: @error-color;

yields the following extraction:

import { loadAndResolveLessVars } from '@hon2a/less-vars-to-js'
const theme = await loadAndResolveLessVars('./src/style/variables.less')
/* {
 *   'primary-color': 'blue',
 *   'error-color': 'brickred',
 *   'secondary-color': '#0000cc',
 *   'match-rate-color': 'brickred'
 * }
 */

Note: If you're using external imports (e.g. import '~someLib/path/to/styles.less';), this needs to run in the root folder of your package, so that it finds the libs at ./node_modules.

Pass Less parser options as a second argument to loadAndResolveLessVars if you need to customize them.

Development

Install

Install dependencies using:

npm install

Develop

After you modify sources, run the following (or set up your IDE to do it for you):

• format the code using npm run format
• lint it using npm run lint
• test it using npm test

and fix the errors, if there are any.

Publish

Publishing is done in two steps:

1. Create a new version tag and push it to the repository:

   npm version <patch|minor|major>
   git push --follow-tags

2. Build and publish the new version as a npm package:

   npm publish --access public