chrome-trace-event

constructor(opts?: TracerOptions);

begin: (fields: Fields) => void;

child: (fields: Fields) => Tracer;

completeEvent: (fields: Fields) => void;

end: (fields: Fields) => void;

flush: () => void;

instantEvent: (fields: Fields) => void;

mkEventFunc: (ph: string) => (fields: Fields) => void;

ph?: string;

pid: number;

tid: number;

ts: number;

[otherData: string]: any;

args?: any;

cat?: any;

[filedName: string]: any;

fields?: Fields | null;

noStream?: boolean;

objectMode?: boolean | null;

parent?: Tracer | null;