Function prettyLoggerTty

packages/effect/src/internal/logger.ts:354–412

(options: {
  readonly colors: boolean
  readonly stderr: boolean
  readonly formatDate: (date: Date) => string
})

}

const prettyLoggerTty = (options: {
  readonly colors: boolean
  readonly stderr: boolean
  readonly formatDate: (date: Date) => string
}) => {
  const color = options.colors ? withColor : withColorNoop
  return makeLogger<unknown, void>(
    ({ annotations, cause, context, date, fiberId, logLevel, message: message_, spans }) => {
      const services = FiberRefs.getOrDefault(context, defaultServices.currentServices)
      const console = Context.get(services, consoleTag).unsafe
      const log = options.stderr === true ? console.error : console.log

      const message = Arr.ensure(message_)

      let firstLine = color(`[${options.formatDate(date)}]`, colors.white)
        + ` ${color(logLevel.label, ...logLevelColors[logLevel._tag])}`
        + ` (${fiberId_.threadName(fiberId)})`

      if (List.isCons(spans)) {
        const now = date.getTime()
        const render = logSpan_.render(now)
        for (const span of spans) {
          firstLine += " " + render(span)
        }
      }

      firstLine += ":"
      let messageIndex = 0
      if (message.length > 0) {
        const firstMaybeString = structuredMessage(message[0])
        if (typeof firstMaybeString === "string") {
          firstLine += " " + color(firstMaybeString, colors.bold, colors.cyan)
          messageIndex++
        }
      }

      log(firstLine)
      console.group()

      if (!Cause.isEmpty(cause)) {
        log(Cause.pretty(cause, { renderErrorCause: true }))
      }

      if (messageIndex < message.length) {
        for (; messageIndex < message.length; messageIndex++) {
          log(Inspectable.redact(message[messageIndex]))
        }
      }

      if (HashMap.size(annotations) > 0) {
        for (const [key, value] of annotations) {
          log(color(`${key}:`, colors.bold, colors.white), Inspectable.redact(value))
        }
      }

      console.groupEnd()
    }
  )