• There are 21 files with units, with 1,548 lines of code.
• 0 very complex files (McCabe index sum 251+; 0 lines of code)
• 0 complex files (McCabe index sum 126-250; 0 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)
• 21 simple files (McCabe index sum 1-25; 1,548 lines of code)
• 9 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
index.js in src/js/containers/search	74	7	20	27	5
results-list.js in src/js/components/results	191	5	18	9	8
users-form.js in src/js/components/users	135	4	18	13	7
search-input.js in src/js/components/search	119	10	17	14	5
index.js in src/js/actions	99	11	17	17	3
search-map.js in src/js/components/search	153	11	14	9	2
index.js in src/js/reducers	62	4	12	19	4
gulpfile.babel.js in root	238	6	9	4	2
sparkline.js in src/js/components/graphs	45	2	8	18	7
index.js in src/js/containers/results	80	4	5	6	2
results-item-list.js in src/js/components/results	46	3	4	9	2
intro-social.js in src/js/components/intro	51	2	3	6	2
results-footer.js in src/js/components/results	27	3	3	11	1
results-header.js in src/js/components/results	28	3	3	11	1
users-comment.js in src/js/components/users	29	2	3	10	2
index.js in src/js/containers/footer	51	3	3	6	1
index.js in src/js/containers/intro	46	3	3	7	1
results-item-sparkline.js in src/js/components/results	21	2	2	10	1
app.js in src/js	35	1	2	6	2
search-map-intro.js in src/js/components/search	14	1	1	7	1
render.js in src	4	1	1	25	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.