Canyon Extension

This is a front-end code coverage upload plugin. When the JavaScript code in the page has been staked by istanbul and the user browses the web page, the executed JavaScript code will trigger istanbul's counter to add a window.__coverage__ object to the browser's global object. After that, users can extract the current page's window.__coverage__ object from the plugin's popup interface, and report it to the server together with some data information filled in by the user.