/**
 * How `ConsoleTracer` renders a completed trace.
 */
export declare enum ConsoleTracerOutputModeEnum {
    /** Indented ASCII tree mirroring the span hierarchy. Best for human readers. */
    Tree = "tree",
    /** Pretty-printed JSON dump of the trace + every span. Best for piping into a tool. */
    Json = "json",
    /** One span per line, no indentation, sorted by start time. Best for grep. */
    Flat = "flat"
}