Atom is the preferred code editor for contributors the fabric composer project. Many developers find Atom especially productive due to the wide range of plugins availability to assist with code development activities. These include syntax highlighting for node.js code, JavaScript and the Composer modelling language, or linting to help eliminate potential bugs and ensure a consistent coding style. Developers can also develop their own plugins. Here's a list of Atom plugins for you consider as you develop within the fabric composer project.
Use the linter-eslint plugin to help with linting node.js and JavaScript code. For an example of the eslinter config file see here.
Use the composer-atom plugin for syntax highlighting of the composer modelling language. It is located in the packages/composer-atom directory of the tools repository in the fabric composer project. Follow the instructions in the README to install the plugin.
Use the todo-show plugin to find indicators that code might not be complete by finding instances of indicative text, such as TODO, FUTURE, BUG etc.
Use the highlight-selected plugin to find all matches of a keyword in the current file.
Use the docblockr plugin to create pretty comments, function prototypes and other helpful code decorations.
Use the file-icons plugin to assign visual representations to file extension to help locate files of a given type.