Capture console in shiny synchronously (real time)

shiny
1

Is there a way to capture console output to Shiny UI synchronously?
I searched some solutions like this one. It works nicely with standard errors, but not standard out like information by print or cat.

Is there a way I can catch them all?
e.g a function:

foo <- function() {
    cat("one\n")
    Sys.sleep(3)
    print(1)
    cat("two\n")
}

if I use verbatimTextOutput, I can only see the results after everything is done. The standard error solution above is not working for this case.

Thanks

2

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