message: render fiber id better
diff: @@ -45,5 +45,7 @@ export const newFiberId = () =>
  * Format a fiber id
  */
  export function prettyFiberId(_: FiberID) {
  - return `[${_.seqNumber}](started at: ${_.startTimeMillis})`
  + return `(sequence: ${_.seqNumber}, start_time: ${new Date(
  + _.startTimeMillis
  + ).toISOString()})`
  }
  