• There are 50 files with units, with 6,944 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)
• 2 slightly complex files (McCabe index sum 26-50; 622 lines of code)
• 48 simple files (McCabe index sum 1-25; 6,322 lines of code)
• 161 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
ad-sizes.ts in core/src	406	30	41	10	10
index.ts in bundle/src/lib/header-bidding/prebid	216	10	38	18	8
config.ts in bundle/src/lib/header-bidding/prebid/bidders	619	14	24	4	5
event-timer.ts in core/src	181	7	15	8	5
detect-ad-blocker.ts in core/src	46	2	14	30	11
prepare-permutive.ts in bundle/src/init/consented	252	3	14	6	6
utils.ts in bundle/src/lib/header-bidding/prebid/modules/analyticsAdapter	79	2	12	15	9
email-hash.ts in core/src	42	4	11	26	7
timed-queue.ts in bundle/src/lib	95	4	9	9	4
eventHandlers.ts in bundle/src/lib/header-bidding/prebid/modules/analyticsAdapter	244	4	9	4	5
pubmatic.js in bundle/src/lib/__vendor	34	1	9	26	9
send-commercial-metrics.ts in core/src	197	6	8	4	3
a9-apstag.js in bundle/src/lib/__vendor	32	5	6	19	2
build-page-targeting.ts in core/src/targeting	178	4	5	3	2
guardian-commercial-queue.ts in bundle/src/lib	54	2	5	9	3
article-body-adverts.ts in bundle/src/lib	59	1	5	8	5
youtube-ima.ts in core/src/targeting	91	2	4	4	2
prepare-ad-verification.ts in bundle/src/lib/ad-verification	68	2	4	6	3
passback.ts in bundle/src/lib/messenger	281	1	4	1	4
non-refreshable-line-items.ts in bundle/src/lib/dfp	40	1	4	10	4
playwright.config.ts in bundle	23	1	3	13	3
teads-cookieless.ts in bundle/src/init/consented	38	2	3	8	2
prepare-ootag.ts in bundle/src/init/consentless	42	2	3	7	2
define-slot.ts in bundle/src/define	217	2	3	1	2
commercial.ts in bundle/src	27	3	3	11	1
session.ts in core/src/targeting	92	1	2	2	2
locators.ts in bundle/playwright/lib	37	2	2	5	1
prepare-googletag.ts in bundle/src/init/consented	123	1	2	2	2
static-ad-slots.ts in bundle/src/init/consented	98	1	2	2	2
university-guide.ts in bundle/src/init/pages	55	1	2	4	2
article.ts in bundle/src/insert/spacefinder	268	1	2	1	2
spacefinder.ts in bundle/src/insert/spacefinder	501	2	2	0	1
slot-config.ts in bundle/src/lib/header-bidding	255	1	2	1	2
render-advert.ts in bundle/src/events	185	1	2	1	2
prepare-prebid.ts in bundle/src/init/consented	52	1	1	2	1
rules.ts in bundle/src/insert/spacefinder	270	1	1	0	1
init-slot-ias.ts in bundle/src/define	105	1	1	1	1
Advert.ts in bundle/src/define	399	1	1	0	1
inizio.ts in bundle/src/lib/third-party-tags	50	1	1	2	1
video-progress-reporting.ts in bundle/src/lib	47	1	1	2	1
url.ts in bundle/src/lib	26	1	1	4	1
viewport.ts in bundle/src/lib/messenger	78	1	1	1	1
background.ts in bundle/src/lib/messenger	327	1	1	0	1
liveramp.ts in bundle/src/lib/header-bidding/prebid/id-handlers	80	1	1	1	1
criteo.ts in bundle/src/lib/header-bidding/prebid/bidders	13	1	1	8	1
appnexus.ts in bundle/src/lib/header-bidding/prebid/bidders	98	1	1	1	1
ix.ts in bundle/src/lib/header-bidding/prebid/bidders	12	1	1	8	1
xhb.ts in bundle/src/lib/header-bidding/prebid/bidders	20	1	1	5	1
a9.ts in bundle/src/lib/header-bidding/a9	96	1	1	1	1
on-slot-viewable.ts in bundle/src/events	96	1	1	1	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.