internal

type Caller struct {
	// File is the basename of the file for this call site.
	File string `json:"file"`
	// Line is the line number in the file for this call site.
	Line int `json:"line"`
	// Func is the function name for this call site, or empty if
	// Options.LogCallerFunc is not enabled.
	Func string `json:"function,omitempty"`
}

type Formatter struct {
	// contains filtered or unexported fields
}

type MessageClass int

type Options struct {
	// LogCaller defines when to add a "caller" key to some or all log lines.
	// This has some overhead, so some users might not want it.
	LogCaller MessageClass

	// LogCallerFunc defines if the calling function name shoule be logged.
	// This has no effect if caller logging is not enabled (see
	// Options.LogCaller).
	LogCallerFunc bool

	// MaxLogDepth defines how many levels of nested fields (e.g. a struct that
	// contains a struct, etc.) to log. If this field is not specified, a
	// default value, 16, will be used.
	MaxLogDepth int
}