netflix / x-element - Conditional Complexity

Intro

Conditional complexity (also called cyclomatic complexity) is a term used to measure the complexity of software. The term refers to the number of possible paths through a program function. A higher value ofter means higher maintenance and testing costs (infosecinstitute.com).
Conditional complexity is calculated by counting all conditions in the program that can affect the execution path (e.g. if statement, loops, switches, and/or operators, try and catch blocks...).
Conditional complexity is measured at the unit level (methods, functions...).
Units are classified in four categories based on the measured McCabe index: 1-5 (simple units), 6-10 (medium complex units), 11-25 (complex units), 26+ (very complex units).

Conditional Complexity Overall

Legend:

51+

26-50

11-25

6-10

1-5

Alternative Visuals

Conditional Complexity per Extension

51+

26-50

11-25

6-10

1-5

Conditional Complexity per Logical Component

primary logical decomposition

51+

26-50

11-25

6-10

1-5

Most Complex Units

Top 29 most complex units

Unit	# lines	McCabe index	# params
static parse() in x-parser.js	113	29	2
static repeat() in x-template.js	17	7	3
static requestListener() in server.js	34	7	2
listen() in x-element.js	19	6	4
unlisten() in x-element.js	19	6	4
static render() in x-template.js	19	5	2
render() in x-element.js	12	3	0
static sendUnknownMimeType() in server.js	6	2	2
static sendRootIndex() in server.js	10	2	1
static html() in x-template.js	3	1	2
static ifDefined() in x-template.js	6	1	1
static sendFileNotFound() in server.js	6	1	1
static sendRedirect() in server.js	4	1	2
static sendFile() in server.js	4	1	4
static get observedAttributes() in x-element.js	4	1	0
static get defaultTemplateEngine() in x-element.js	3	1	0
static get templateEngine() in x-element.js	3	1	0
static get styles() in x-element.js	3	1	0
static get properties() in x-element.js	3	1	0
static get listeners() in x-element.js	3	1	0
static createRenderRoot() in x-element.js	3	1	1
static template() in x-element.js	3	1	2
constructor() in x-element.js	4	1	0
connectedCallback() in x-element.js	3	1	0
attributeChangedCallback() in x-element.js	4	1	3
disconnectedCallback() in x-element.js	3	1	0
dispatchError() in x-element.js	5	1	1
get internal() in x-element.js	3	1	0
static getErrorContext() in x-parser.js	3	1	1