Frontools theme inheritance temporary workaround

theme-inheritance.js

module.exports = function() {
  // global vars
  var gulp    = this.gulp,
      plugins = this.opts.plugins,
      config  = this.opts.configs;

  // local plugins
  const fs = require('fs');
  const path = require('path');
  const mkdirp = require('mkdirp');

  // local vars
  var themeName = plugins.util.env.theme || false,
      themes = themeName ? [themeName] : Object.keys(config.themes);

  // Cycles through themes defined in themes.json
  themes.forEach(name => {
    var theme = config.themes[name];

    // Triggers if the current theme has a 'parent' argument
    if (theme.parent) {
      var parentSrc = config.themes[theme.parent].src;

      // Creates an array of paths for every .scss file in the parent theme
      var partials = plugins.globby.sync(
          [
            config.projectPath + parentSrc + '/**/*.scss'
          ]
      );

      // Iterates through the array
      partials.forEach(function(partial) {
            // Grabs the relative file path after the parent theme dir name
        var relPath = path.parse(partial).dir.split(parentSrc).pop(),
            // Stores only the partial's file name in a variable
            fileName = path.parse(partial).base;

        // Creates empty directory structures based on paths from the globby array
        // This will ONLY create necessary folder structures (no templates or layout folders are included)

        mkdirp(config.projectPath + theme.src + relPath, () => {
          // when the callback fires, symlinks to each of the scss partials are established based on the parent theme
          fs.symlink(
            partial, config.projectPath + theme.src + relPath + '/' + fileName,
            () => {
              plugins.util.log(
                plugins.util.colors.green(
                  'Symlinked: ' + relPath + '/' + fileName + ' to ' + name
                )
              );
            }
          );
        });
      })
    }
  });
};