• There are 103 files with units, with 8,607 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)
• 6 medium complex files (McCabe index sum 51-125; 1,886 lines of code)
• 11 slightly complex files (McCabe index sum 26-50; 2,221 lines of code)
• 86 simple files (McCabe index sum 1-25; 4,500 lines of code)
• 137 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
stub-modal.js in public/components/stub-modal	485	25	82	17	19
StubAPI.scala in common-lib/src/main/scala/com/gu/workflow/api	245	33	68	28	4
content-list-item.js in public/components/content-list-item	318	22	64	20	17
content-service.js in public/lib	252	24	58	23	18
composer-service.js in public/lib	217	23	56	26	9
content-list.js in public/components/content-list	369	14	53	14	28
content-list-drawer.js in public/components/content-list-drawer	321	25	50	16	9
date-service.js in public/lib	172	16	45	26	10
sidebar-filter.js in public/components/sidebar-filter	207	12	43	21	11
filters-service.js in public/lib	258	12	43	17	14
date-time-picker.js in public/components/date-time-picker	175	15	38	22	12
Admin.scala in app/controllers	249	13	37	15	7
Api.scala in app/controllers	362	31	37	10	3
capi-content-service.js in public/lib	125	11	33	26	13
punters.js in public/components/punters	109	9	26	24	8
editable-field.js in public/components/editable-field	168	12	26	15	6
http-session-service.js in public/lib	75	3	26	35	19
ui-filter-list.js in public/components/directives	92	5	22	24	15
Application.scala in app/controllers	165	7	20	12	6
toolbar-sections-dropdown.js in public/components/toolbar-sections-dropdown	104	7	20	19	7
preferences-service.js in public/lib	107	10	20	19	5
StubDecorator.scala in common-lib/src/main/scala/com/gu/workflow/util	57	6	19	33	5
location-service.js in public/lib	73	10	18	25	4
Response.scala in common-lib/src/main/scala/models/api	99	10	15	15	3
PanDomainAuthActions.scala in app/controllers	42	4	13	31	7
column-service.js in public/lib	82	7	13	16	4
LoggingContext.scala in common-lib/src/main/scala/com/gu/workflow/util	64	6	13	20	3
atom-service.js in public/lib	58	8	12	21	3
dashboard-toolbar.js in public/layouts/dashboard	134	5	11	8	4
capi-atom-service.js in public/lib	79	10	11	14	2
ApiUtils.scala in common-lib/src/main/scala/com/gu/workflow/api	45	5	11	24	3
EditorialSupportTeamsController.scala in app/controllers	57	3	10	18	5
location-picker.js in public/components/location-picker	56	8	10	18	2
word-count-helpers.ts in public/components/content-list-item	37	2	10	27	6
polling-service.js in public/lib	51	7	10	20	2
user.js in public/lib	62	4	10	16	4
tag-api-service.js in public/lib	58	7	10	17	4
DBResponseToAPI.scala in common-lib/src/main/scala/com/gu/workflow/lib	32	2	10	31	7
SectionsAPI.scala in common-lib/src/main/scala/com/gu/workflow/api	49	5	10	20	2
presence-indicators.js in public/components/presence-indicator	71	2	9	13	7
visibility-service.js in public/lib	36	5	9	25	4
filter-defaults.js in public/lib	186	3	8	4	6
SectionDeskMappingsAPI.scala in common-lib/src/main/scala/com/gu/workflow/api	44	4	8	18	2
presence.js in public/lib	87	7	7	8	1
user-message.js in public/components/user-message	46	4	6	13	3
feature-switches.js in public/components/feature-switches	58	4	6	10	3
settings-service.js in public/lib	30	3	6	20	3
DateFormat.scala in common-lib/src/main/scala/models	38	4	6	16	2
EditorialSupportStaff.scala in common-lib/src/main/scala/models	57	4	6	11	3
ClientMessageLoggable.scala in common-lib/src/main/scala/com/gu/workflow/lib	28	1	6	21	6

• 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.