cognitive-complexity

Default severity: warning

Reports a function when its cognitive-complexity score exceeds 7. Each control structure adds one plus its nesting depth, so deeply nested decisions cost more than an equivalent sequence of guard clauses.

Bad

func process(items []Item) {
	if ready() {
		for _, item := range items {
			if valid(item) {
				for retry(item) {
					process(item)
				}
			}
		}
	}
}

Good

func process(items []Item) {
	if !ready() {
		return
	}
	for _, item := range items {
		processItem(item)
	}
}

Configuration

The maximum cognitive-complexity score is fixed at 7. Configure the rule’s severity and path exclusions in strider.toml:

[checks.cognitive-complexity]
severity = "error"
excludes = ["generated/**"]