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ncurses - How to read a key in Go but continue application if no key pressed within x seconds?

This is an easy way to read a key from the console

reader := bufio.NewReader(os.Stdin)

// ...

func readKey() rune {
    char, _, err := reader.ReadRune()
    if err != nil {
        fmt.Println("Error reading key: ", err)
    }
    return char
}

// ...

fmt.Println("Checking keyboard input...")    

loop:
for {
    keyb := readKey()
    switch keyb {
    case 'x':
      fmt.Println("x key pressed, exiting loop")
      break loop
    }
}

However the issue is the application always waits for a key to be read. What if you want to wait only 5 seconds for a key to be read, and if no key is read, continue the application?

I'm thinking that I must pull in a dependency maybe, such as ncurses or a unit (module) that turbopascal had which was called crt and had a readkey function. But is a dependency really necessary or is there an easy way to do it without? Possibly even some defer() tricks, I don't know.

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