var encoding/json.numberType

4 uses

	encoding/json (current package)
		decode.go#L844: var numberType = reflect.TypeFor[Number]()
		decode.go#L954: 			if v.Type() == numberType && !isValidNumber(t) {
		decode.go#L975: 			if v.Kind() == reflect.String && v.Type() == numberType {
		encode.go#L580: 	if v.Type() == numberType {