• There are 328 files with units, with 73,177 lines of code.
• 0 very complex files (McCabe index sum 251+; 0 lines of code)
• 1 complex files (McCabe index sum 126-250; 25 lines of code)
• 3 medium complex files (McCabe index sum 51-125; 1,004 lines of code)
• 9 slightly complex files (McCabe index sum 26-50; 3,034 lines of code)
• 315 simple files (McCabe index sum 1-25; 69,114 lines of code)
• 1,098 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
curl-with-js-and-domReady.js in dotcom-rendering/src/static/js	25	1	156	624	156
discussion.ts in dotcom-rendering/src/lib	381	94	110	29	2
feCricketMatchData.ts in dotcom-rendering/src/frontend	93	60	60	65	1
enhanceCards.ts in dotcom-rendering/src/model	530	8	55	10	10
feFootballMatchListPage.ts in dotcom-rendering/src/frontend	113	41	41	36	1
feFootballMatchInfoPage.ts in dotcom-rendering/src/frontend	94	37	37	39	1
enhance-images.ts in dotcom-rendering/src/model	397	14	36	9	10
StackedProgress.stories.tsx in dotcom-rendering/src/components/ElectionTrackers	246	27	33	13	2
ValuesWithChange.stories.tsx in dotcom-rendering/src/components/ElectionTrackers	242	31	31	13	1
BannerWrapper.tsx in dotcom-rendering/src/components/marketing/banners/common	402	9	31	8	12
client.ts in ab-testing/config/lib/fastly	188	19	30	16	3
CricketMatchHeader.tsx in dotcom-rendering/src/components/CricketMatchHeader	657	9	27	4	11
DecideLayout.stories.tsx in dotcom-rendering/src/layouts	695	27	27	4	1
useDesignableBannerModel.ts in dotcom-rendering/src/components/marketing/banners/designableBanner	370	23	25	7	2
ReaderRevenueBanner.tsx in dotcom-rendering/src/components/StickyBottomBanner	352	5	22	6	15
BrazeBannersSystem.tsx in dotcom-rendering/src/lib/braze	1200	12	22	2	8
NewsletterSignupForm.island.stories.tsx in dotcom-rendering/src/components	227	21	21	9	1
FootballMatchHeader.stories.tsx in dotcom-rendering/src/components/FootballMatchHeader	274	21	21	8	1
Metrics.island.tsx in dotcom-rendering/src/components	195	5	20	10	9
GalleryLayout.tsx in dotcom-rendering/src/layouts	643	5	20	3	9
test-group-mvt-manager.ts in ab-testing/config/scripts/build	110	4	20	18	10
FootballMatchHeader.tsx in dotcom-rendering/src/components/FootballMatchHeader	561	8	19	3	5
productBlockElement.ts in dotcom-rendering/fixtures/manual	791	18	18	2	1
TextBlockComponent.tsx in dotcom-rendering/src/components	356	4	15	4	6
iframe-titles.ts in scripts/deno	172	8	15	9	6
ManyNewsletterSignUp.island.tsx in dotcom-rendering/src/components	405	8	14	3	3
Liveness.island.tsx in dotcom-rendering/src/components	218	3	13	6	6
enhanceLists.ts in dotcom-rendering/src/model	157	4	13	8	6
main.web.ts in dotcom-rendering/src/client	129	13	13	10	1
DiscussionWeb.island.tsx in dotcom-rendering/src/components	91	12	12	13	1
NotificationsToggle.stories.tsx in dotcom-rendering/src/components	76	12	12	16	1
ArticleMeta.web.stories.tsx in dotcom-rendering/src/components	369	12	12	3	1
Notifications.stories.tsx in dotcom-rendering/src/components/FootballMatchHeader	127	12	12	9	1
USCongress.stories.tsx in dotcom-rendering/src/components/ElectionTrackers	189	8	12	6	2
CricketMatchHeaderTabsDemo.stories.tsx in dotcom-rendering/src/components	140	12	12	9	1
ThreeTierChoiceCards.tsx in dotcom-rendering/src/components/marketing/shared	353	4	12	3	8
storybook.ts in dotcom-rendering/src/components/marketing/banners/utils	140	12	12	9	1
enhanceTableOfContents.ts in dotcom-rendering/src/model	110	4	12	11	3
Caption.tsx in dotcom-rendering/src/components	396	1	11	3	11
scheduler.ts in dotcom-rendering/src/lib	90	6	11	12	5
footballMatchV2.ts in dotcom-rendering/src	263	5	10	4	5
Branding.island.tsx in dotcom-rendering/src/components	248	1	10	4	10
LiveBlogEpic.island.tsx in dotcom-rendering/src/components	275	2	10	4	9
DesignableBannerReminderSignedOut.tsx in dotcom-rendering/src/components/marketing/banners/designableBanner/components	254	5	10	4	3
AdmiralScript.island.tsx in dotcom-rendering/src/components	277	9	10	4	2
sIndicator.ts in dotcom-rendering/src/client	200	1	10	5	10
DirectoryPageNav.island.tsx in dotcom-rendering/src/components	533	9	9	2	1
LightboxLink.tsx in dotcom-rendering/src/components	154	1	9	6	9
CricketMatchHeader.stories.tsx in dotcom-rendering/src/components/CricketMatchHeader	396	9	9	2	1
ContributionsEpic.tsx in dotcom-rendering/src/components/marketing/epics	406	2	9	2	5

• 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.