code: function parseImports(data, file, extensions) {
  
  	const imports = [];
  
  	let result = importRegExp.exec(data);
  	let encoding;
  
  	while(result !== null) {
  
  		encoding = extensions[path.extname(result[2])];
  
  		// Filter irrelevant imports.
  		if(encoding !== undefined) {
  
  			imports.push(new FileImport(
  				result.index,
  				importRegExp.lastIndex,
  				result[1],
  				path.resolve(path.dirname(file), result[2]),
  				encoding
  			));
  
  		}
  
  		result = importRegExp.exec(data);
  
  	}
  
  	return Promise.resolve([imports, data]);
  
  }
docs: Parses the file for import statements.
  
  @private
  @param {String} data - The file contents.
  @param {String} file - The path of the source file.
  @param {Object} extensions - Extensions of imports that shall be inlined.
  @return {Promise} A promise.