• There are 27 files with units, with 4,093 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)
• 1 medium complex files (McCabe index sum 51-125; 314 lines of code)
• 6 slightly complex files (McCabe index sum 26-50; 2,058 lines of code)
• 20 simple files (McCabe index sum 1-25; 1,721 lines of code)
• 7 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
Config.scala in facia-json/src/main/scala/com/gu/facia/client/models	314	7	54	17	18
ItemKicker.scala in fapi-client/src/main/scala/com/gu/facia/api/utils	195	7	50	26	18
FAPI.scala in fapi-client/src/main/scala/com/gu/facia/api	478	19	49	10	6
collection.scala in fapi-client/src/main/scala/com/gu/facia/api/models	460	11	45	10	18
CustomSubnav.scala in facia-json/src/main/scala/com/gu/facia/client/models	181	8	44	24	10
ContentApi.scala in fapi-client/src/main/scala/com/gu/facia/api/contentapi	218	11	33	15	12
curatedcontent.scala in fapi-client/src/main/scala/com/gu/facia/api/models	526	15	31	6	5
FaciaContentUtils.scala in fapi-client/src/main/scala/com/gu/facia/api/utils	289	3	15	5	6
ResolvedMetaData.scala in fapi-client/src/main/scala/com/gu/facia/api/utils	244	4	15	6	7
CardStyle.scala in fapi-client/src/main/scala/com/gu/facia/api/utils	104	2	15	14	14
Response.scala in fapi-client-core/src/main/scala/com/gu/facia/api	104	8	15	14	4
Backfill.scala in fapi-client/src/main/scala/com/gu/facia/api/utils	90	2	13	14	8
collectionconfig.scala in fapi-client/src/main/scala/com/gu/facia/api/models	179	6	13	7	7
front.scala in fapi-client/src/main/scala/com/gu/facia/api/models	67	5	12	18	6
Collection.scala in facia-json/src/main/scala/com/gu/facia/client/models	225	6	12	5	4
FaciaPressQueue.scala in fapi-client/src/main/scala/com/gu/facia/api/models/faciapress	45	3	10	22	4
CustomSubnavService.scala in fapi-client/src/main/scala/com/gu/facia/api	35	2	8	23	5
package.scala in facia-json/src/main/scala/com/gu/facia/client/models	22	1	8	36	8
ContainerBrandingFinder.scala in fapi-client/src/main/scala/com/gu/facia/api/utils	51	2	7	14	6
JodaFormat.scala in facia-json/src/main/scala/com/gu/facia/client/json	31	2	7	23	6
ApiClient.scala in facia-json/src/main/scala/com/gu/facia/client	56	3	5	9	3
IdsSearchQueries.scala in fapi-client/src/main/scala/com/gu/facia/api/contentapi	27	1	4	15	4
ExternalLinks.scala in fapi-client/src/main/scala/com/gu/facia/api/utils	37	2	4	11	2
ContentApiUtils.scala in fapi-client/src/main/scala/com/gu/facia/api/utils	62	2	4	6	3
IntegerString.scala in fapi-client/src/main/scala/com/gu/facia/api/utils	7	1	1	14	1
facia-scala-client-testing.ts in cdk/lib	31	1	1	3	1
Environment.scala in fapi-client-core/src/main/scala/com/gu/facia/client	15	1	1	7	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.