anthropics/claude-code
File Complexity*
The distribution of files by complexity: the sum of the McCabe indexes of their units.
File Complexity Overall
  • There are 164 files with units, with 9,186 lines of code.
    • 1 very complex files (McCabe index sum 251+; 1,211 lines of code)
    • 2 complex files (McCabe index sum 126-250; 1,211 lines of code)
    • 5 medium complex files (McCabe index sum 51-125; 1,045 lines of code)
    • 6 slightly complex files (McCabe index sum 26-50; 984 lines of code)
    • 150 simple files (McCabe index sum 1-25; 4,735 lines of code)
  • 772 main files have no units (e.g. languages without unit analysis, or files without functions) and are not classified.
system13% | 13% | 11% | 10% | 51%
Legend:
251+
126-250
51-125
26-50
1-25


explore: grouped by folders | grouped by complexity
File Complexity per Extension
251+
126-250
51-125
26-50
1-25
py33% | 11% | 28% | 6% | 19%
ts0% | 16% | 0% | 14% | 69%
tsx0% | 0% | 0% | 0% | 100%
File Complexity per Logical Decomposition
primary
251+
126-250
51-125
26-50
1-25
plugins36% | 12% | 22% | 7% | 21%
mods0% | 15% | 0% | 4% | 79%
.github0% | 0% | 100% | 0% | 0%
scripts0% | 0% | 0% | 100% | 0%
Most Complex Files (Top 50)

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# unitsMcCabe index
(sum)		per 100
lines		most complex
unit
security_reminder_hook.py
in plugins/security-guidance/hooks
 1211 24 270 22 51
register.ts
in mods/diff/hooks
 806 48 182 23 47
gitutil.py
in plugins/security-guidance/hooks
 405 19 143 35 17
check_workflow_hardening.py
in .github/scripts
 278 14 117 42 32
diffstate.py
in plugins/security-guidance/hooks
 232 12 78 34 20
extensibility.py
in plugins/security-guidance/hooks
 181 11 71 39 21
rule_engine.py
in plugins/hookify/core
 170 8 61 36 28
config_loader.py
in plugins/hookify/core
 184 5 55 30 26
ensure_agent_sdk.py
in plugins/security-guidance/hooks
 138 3 43 31 36
register.ts
in mods/agents-md/hooks
 213 3 38 18 34
session_state.py
in plugins/security-guidance/hooks
 100 7 35 35 14
sweep.ts
in scripts
 127 3 33 26 15
177 4 30 17 23
229 6 27 12 17
_base.py
in plugins/security-guidance/hooks
 89 4 25 28 14
review_api.py
in plugins/security-guidance/hooks
 267 8 24 9 11
telemetry-of.ts
in mods/telemetry/hooks/telemetry-of
 142 9 24 17 6
dialog-pane.tsx
in mods/diff/hooks/views/dialog-pane
 110 4 23 21 14
dock-plan-of.ts
in mods/diff/hooks/views/body/plan
 58 1 23 40 23
kind-walk-of.ts
in mods/diff/hooks/git/probes/kind-walk-of
 43 4 19 44 7
checked-value.ts
in mods/telemetry/hooks/entries/checked-value
 52 5 17 33 5
parse-file-diffs.ts
in mods/diff/hooks/git/parse/parse-file-diffs
 66 1 16 24 16
parse-numstat.ts
in mods/diff/hooks/git/parse
 44 1 15 34 15
register.ts
in mods/sec-default/hooks
 83 3 15 18 7
mode-label-of.ts
in mods/diff/hooks/pane-state/mode-label-of
 28 2 13 46 7
wrapped-lines.ts
in mods/diff/hooks/views/layout/wrapped-lines
 47 1 13 28 13
checked-mark.ts
in mods/telemetry/hooks/entries
 37 5 13 35 5
branch-base-of.ts
in mods/diff/hooks/git/probes/branch-base-of
 52 2 12 23 9
body-layout-of.ts
in mods/diff/hooks/views/body/plan
 46 1 11 24 11
rename-display-of.ts
in mods/diff/hooks/git/rename-display-of
 33 1 11 33 11
head-key-of.ts
in mods/diff/hooks/git/probes/head-key-of
 48 2 11 23 10
register.ts
in mods/telemetry/hooks
 343 7 11 3 4
list-block-of.tsx
in mods/diff/hooks/views/body
 65 1 10 15 10
fetch-hunks.ts
in mods/diff/hooks/git/fetch-hunks
 61 1 10 16 10
identity-of.ts
in mods/telemetry/hooks/context/identity
 33 1 10 30 10
is-analytics-off.ts
in mods/telemetry/hooks/is-analytics-off
 27 1 10 37 10
empty-state-of.ts
in mods/diff/hooks/pane-state
 51 1 9 18 9
message-pane-of.tsx
in mods/diff/hooks/views/dialog-pane/message-pane-of
 57 1 9 16 9
org-server-names.ts
in mods/sec-default/hooks/policy/managed-tools-restored/is-org-tool/org-server-names
 16 1 9 56 9
terminal-of.ts
in mods/telemetry/hooks/context/terminal-of
 58 1 9 16 9
list-body-of.ts
in mods/diff/hooks/views/dialog-pane/list-body-of
 27 1 8 30 8
dialog-focus-of.ts
in mods/diff/hooks/views/dialog-pane
 27 1 8 30 8
cell-width.ts
in mods/diff/hooks/views/layout/cell-width
 16 1 8 50 8
code-blocks-of.ts
in mods/diff/hooks/views/detail/code-blocks-of
 40 1 8 20 8
placeholder-of.ts
in mods/diff/hooks/views/detail/placeholder-of
 27 1 8 30 8
branch-tier.ts
in mods/diff/hooks/git/tiers
 39 3 8 21 6
pretooluse.py
in plugins/hookify/hooks
 39 1 7 18 7
default-branch-of.ts
in mods/diff/hooks/git/probes/default-branch-of
 32 2 7 22 4
checked-props.ts
in mods/telemetry/hooks/entries/checked-props
 26 3 7 27 3
client-type-of.ts
in mods/telemetry/hooks/context/client-type-of
 16 1 7 44 7
About This Analysis
  • 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.
Learn more...