Interface Spanner<Options>

span

• span<Args, Result>(name: string, handler: (updatedOptions: Options, ...rest: Args) => Result): (...args: Args) => Result

• Invokes a handler in the context of a span. When the handler is called, an argument will be inserted at the beginning of the arguments list containing the options that may have been updated by the tracer.

  Type parameters

  • Args: unknown[]

  • Result

  Parameters

  • name: string

    the name of this span, which will appear in the trace.

  • handler: (updatedOptions: Options, ...rest: Args) => Result

    the handler to run. Its first parameter will have the type of options that were passed to makeSpanner

    • • (updatedOptions: Options, ...rest: Args): Result

      • Parameters

        • updatedOptions: Options

        • Rest ...rest: Args

        Returns Result

  Returns (...args: Args) => Result

  a function that will wrap a call to the handler in tracing code, forwarding its parameters

  • • (...args: Args): Result

    • Parameters

      • Rest ...args: Args

      Returns Result