Custom Webpack loader that prepends a Sass import to each imported Sass file

sass-includes-loader.js

/**
 * Loader that automatically prepends a reference to sassIncludes in the Webpack configuration files
 */

import fs from 'fs';
import path from 'path';
import config from './config';

let fileFound = true;

if (!config.sassIncludes || !fs.existsSync(config.sassIncludes)) {
  console.warn('Can not find the sassIncludes files');
  fileFound = false;
}

module.exports = function (content) {
  this.cacheable && this.cacheable();
  
  if (!fileFound) {
    return content;
  }
  
  const relativePath = path.relative(path.dirname(this.resourcePath), config.sassIncludes);
  return `import "${relativePath}"; ${content}`;
};

@ethanve: Please, change fs.exists to fs.existsSync. fs.exists returns undefined.