plugin_webpack_directories.js

/* eslint-disable no-var */

var { execSync } = require('child_process');
var path = require('path');
var fs = require('fs');

// If we get multiple lines, then the plugin_webpack_directories.rb script
// has on the stdout more that just the JSON we want, so we use newline to split and check.
var sanitizeWebpackDirs = pluginDirs => {
  var splitDirs = pluginDirs
    .toString()
    .split('\n')
    .reverse();

  return splitDirs.length > 2 ? splitDirs[1] : pluginDirs;
};

// Get paths that have a specific file or folder
var pluginPath = file => pluginsObj => {
  var paths = [];

  pluginsObj.paths.forEach(entry => {
    var filePath = path.join(path.dirname(entry), file);

    if (fs.existsSync(filePath)) {
      paths.push(filePath);
    }
  });
  return paths;
};
// Create aliases for plugins so that their components are easily accessible.
// Each alias points to /$path_to_plugin/webpack
var aliasPlugins = pluginEntries => {
  var aliases = {};

  Object.keys(pluginEntries).forEach(key => {
    aliases[key] = path.dirname(pluginEntries[key]);
  });
  return aliases;
};

var webpackedDirs = stderr => {
  var handleStderr = stderr || 'ignore';

  return execSync(path.join(__dirname, './plugin_webpack_directories.rb'), {
    stdio: ['pipe', 'pipe', handleStderr],
  });
};

var getPluginDirs = stderr =>
  JSON.parse(sanitizeWebpackDirs(webpackedDirs(stderr)));

var packageJsonDirs = stderr =>
  pluginPath('package.json')(getPluginDirs(stderr)).map(path.dirname);

module.exports = {
  getPluginDirs,
  pluginNodeModules: pluginPath('node_modules'),
  aliasPlugins,
  packageJsonDirs,
  sanitizeWebpackDirs,
  pluginPath,
};