code: function readImports(imports, data) {
  
  	return (imports.length === 0) ? Promise.resolve([imports, data]) : new Promise((resolve, reject) => {
  
  		let i = 0;
  
  		(function proceed(error, importData) {
  
  			if(importData) {
  
  				imports[i++].data = importData;
  
  			}
  
  			if(error) {
  
  				reject(error);
  
  			} else if(i === imports.length) {
  
  				resolve([imports, data]);
  
  			} else {
  
  				fs.readFile(imports[i].path, imports[i].encoding, proceed);
  
  			}
  
  		}());
  
  	});
  
  }
docs: Reads the contents of the imported files.
  
  @private
  @param {FileImport[]} imports - A list of relevant import statements.
  @param {String} data - The file contents.
  @return {Promise} A promise.