kubernetes/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/promlint.go

type Linter …

// New creates a new Linter that reads an input stream of Prometheus metrics in
// the Prometheus text exposition format.
func New(r io.Reader) *Linter { … }

// NewWithMetricFamilies creates a new Linter that reads from a slice of
// MetricFamily protobuf messages.
func NewWithMetricFamilies(mfs []*dto.MetricFamily) *Linter { … }

// AddCustomValidations adds custom validations to the linter.
func (l *Linter) AddCustomValidations(vs ...Validation) { … }

// Lint performs a linting pass, returning a slice of Problems indicating any
// issues found in the metrics stream. The slice is sorted by metric name
// and issue description.
func (l *Linter) Lint() ([]Problem, error) { … }

// lint is the entry point for linting a single metric.
func (l *Linter) lint(mf *dto.MetricFamily) []Problem { … }