• There are 10 files with units, with 4,249 lines of code.
• 1 very complex files (McCabe index sum 251+; 2,828 lines of code)
• 2 complex files (McCabe index sum 126-250; 629 lines of code)
• 0 medium complex files (McCabe index sum 51-125; 0 lines of code)
• 0 slightly complex files (McCabe index sum 26-50; 0 lines of code)
• 7 simple files (McCabe index sum 1-25; 792 lines of code)
• 14 main files have no units (e.g. languages without unit analysis, or files without functions) and are not classified.

The McCabe index of a file grows with its size: per 100 lines tells a large but plain file from a dense one, and most complex unit whether the complexity sits in one unit or is spread over many.

File	# lines	# units	McCabe index (sum)	per 100 lines	most complex unit
lodash.js in project/src/v/x/js/lib	2828	174	738	26	67
howler.js in project/src/v/x/js/lib	608	40	163	27	17
curl.js in project/src/v/x/js/lib	21	1	126	600	126
game.js in project/src/v/x/js	138	13	16	12	2
audio.js in project/src/v/x/js/app	93	11	15	16	2
rounds.js in project/src/v/x/js/app	197	12	13	7	2
Gruntfile.js in root	293	3	12	4	9
animFramePolyfill.js in project/src/v/x/js/lib	24	4	9	38	6
boot.js in project/src	21	4	5	24	2
game.js in project/src/v/x/js/app	26	5	5	19	1

• File complexity is the sum of the McCabe indexes (conditional complexity) of the units (methods, functions...) in a file.
• Files are classified in five categories based on that sum: 1-25 (simple files), 26-50 (slightly complex files), 51-125 (medium complex files), 126-250 (complex files), 251+ (very complex files). The default bands are five times the unit complexity bands, as a file is a group of units.
• Only main code files with units are classified. Files without units (languages without unit analysis, or files without functions) have no complexity to measure and are left out rather than counted as simple.
• A very complex file holds many decisions, which often means it has too many responsibilities: a candidate to split, and a place where changes need more testing.