1. module webpack-node-externals
   1. function webpack-node-externals (options)

module webpack-node-externals

function webpack-node-externals (options)

• description and source-code

  function nodeExternals(options) {
      options = options || {};
      var whitelist = [].concat(options.whitelist || []);
      var binaryDirs = [].concat(options.binaryDirs || ['.bin']);
      var importType = options.importType || 'commonjs';
      var modulesDir = options.modulesDir || 'node_modules';
      var modulesFromFile = !!options.modulesFromFile;
  
      // helper function
      function isNotBinary(x) {
          return !contains(binaryDirs, x);
      }
  
      // create the node modules list
      var nodeModules = modulesFromFile ? readFromPackageJson() : readDir(modulesDir).filter(isNotBinary);
  
      // return an externals function
      return function(context, request, callback) {
          var moduleName = options.includeAbsolutePaths ? getModuleName(request) : request.split('/')[0];
          if (contains(nodeModules, moduleName) && !containsPattern(whitelist, request)) {
              // mark this module as external
              // https://webpack.github.io/docs/configuration.html#externals
              return callback(null, importType + " " + request);
          };
          callback();
      }
  }

• example usage

  n/a