lo/docs/data/core-assert.md

name, slug, sourceRef, category, subCategory, playUrl, variantHelpers, similarHelpers, position, signatures

name	slug	sourceRef	category	subCategory	playUrl	variantHelpers	similarHelpers	position	signatures
Assert	assert	errors.go#L359	core	error-handling	https://go.dev/play/p/Xv8LLKBMNwI	core#error-handling#assert core#error-handling#assertf	core#error-handling#validate core#error-handling#mustx core#error-handling#tryx core#error-handling#tryorx core#error-handling#trycatch core#error-handling#trywitherrorvalue core#error-handling#errorsas	80	func Assert(condition bool, message ...string) func Assertf(condition bool, format string, args ...any)

Does nothing when condition is true; otherwise panics.

// Base variant with optional message
age := 12
lo.Assert(age >= 15, "user age must be >= 15")
// panics: "user age must be >= 15"

// Without message - panics with default message
x := -1
lo.Assert(x > 0)
// panics: "assertion failed: condition is not true"

// Formatted variant with custom message
age = 12
lo.Assertf(age >= 15, "user age must be >= 15, got %d", age)
// panics: "user age must be >= 15, got 12"

// When condition is true - no panic
age = 20
lo.Assert(age >= 15, "user age must be >= 15")
// continues normally

Custom handler

Replace lo.Assert and lo.Assertf with your own statement:

lo.Assertf = func(condition bool, format string, args ...any) {
		if !condition {
			  panic(fmt.Errorf("%s: %s", "customErr", fmt.Sprintf(format, args...)))
		}
}