Overleaf beamer forest overlays

Question

I would like for the nodes of my forest to be visible sequentially. The code below makes the text sequential, but still shows the boxes for each item. How can I make it so the boxes and text appear sequentially?

Here's my mwe:

\documentclass[xcolor={dvipsnames}]{beamer}
\usepackage{tikz}
\usepackage{forest}
\usepackage{pgfkeys}
\usetikzlibrary{arrows.meta}
\begin{document}
\begin{frame}
\tikzset{
invisible/.style={opacity=0, text opacity=0},
visible on/.style={alt=#1{}{invisible}},
alt/.code args={<#1>#2#3}{%
    \alt<#1>{\pgfkeysalso{#2}}{\pgfkeysalso{#3}} 
  },
  block/.style={rectangle, draw, fill=white!20, text width=2.75cm, text centered, rounded corners, minimum height=1.4cm},
  line/.style={draw, very thick, color=black!80, -Stealth},
}
\forestset{
  visible on/.style={
    for tree={
      /tikz/visible on={#1},
      edge+={/tikz/visible on={#1}}}}}
\begin{forest}
  arrow to/.style n args=2{%
    delay={%
      tikz+={%
      \draw [every edge, line] () -- (!#1) node [above, midway] {#2};
      },
    },
    !u.s sep+=30pt,
  },
  before typesetting nodes={%
    where n=1{%
      edge label/.wrap value={%
       node [left,pos=.75, anchor=mid east] {#1}
      },
    }{%
      edge label/.wrap value={%
        node [right,pos=.75, anchor=mid west] {#1}
      },
    },
  },
  for tree={%
  grow=east,
    parent anchor=east,
    child anchor=west,
    calign=edge midpoint,
    edge+=->,
    block,
    edge={line},
    l sep+=10pt,
  },
    forked edges
 [\visible<1->{some text}
    [\uncover<2->{some more text}
     [\uncover<3->{even more text}]
       [\uncover<3->{more text again}]
        [\uncover<3->{even some more text}]
]
[\uncover&lt;2-&gt;{the last text}
]

]
\end{forest}
\end{frame}
\end{document}

Thank you!

Updated the code: Thanks for pointing out it didn't compile. There was an extra { I removed.

Code from: Positioning and layout in Forest

Answer 1

Your code fails to compile due to multiple errors. Whenever you get an error, the PDF which results is good only for debugging. It is not expected to be as you'd expect if compilation succeeded. It's fine to post code which won't compile if you can't fix it. But please report the error!

It's not clear to me from your code what exactly you're trying to do.

• You use forked edges but don't load the library it requires.
• You define visible on etc. but don't use them.
• You define arrow to, but never use it.
• You include code for positioning edge labels you don't have.

In addition, you have mismatched { }, a blank line in your forest environment, incorrect use of parameters in definitions and miscellaneous other mistakes. All of these have to be corrected before you can decide if the output is correct or not.

Here's a version which compiles. I've left the unused definition of arrow to, but commented out the edge label handling, since that won't work as-is. I've replaced \visible and \uncover by visible on, corrected the { } groups and removed the blank line. I've also moved the remaining definitions to the preamble, so they can be reused without duplication, added the edges library and removed the loading of packages used by forest anyway.

\documentclass[xcolor={dvipsnames}]{beamer}
\usepackage[edges]{forest}
\usetikzlibrary{arrows.meta}
\tikzset{
  invisible/.style={opacity=0, text opacity=0},
  visible on/.style={alt=#1{}{invisible}},
  alt/.code args={<#1>#2#3}{%
    \alt<#1>{\pgfkeysalso{#2}}{\pgfkeysalso{#3}} 
  },
  block/.style={rectangle, draw, fill=white!20, text width=2.75cm, text centered, rounded corners, minimum height=1.4cm},
  line/.style={draw, very thick, color=black!80, -Stealth},
}
\forestset{
  visible on/.style={
    for tree={
      /tikz/visible on={#1},
      edge+={/tikz/visible on={#1}},
    },
  },
  arrow to/.style n args=2{%
    delay={%
      tikz+={%
        \draw [every edge, line] () -- (!#1) node [above, midway] {#2};
      },
    },
    !u.s sep+=30pt,
  },
}
\begin{document}
\begin{frame}
\begin{forest}
%   before typesetting nodes={%
%     where n=1{%
%       edge label/.wrap value={%
%         node [left,pos=.75, anchor=mid east] {#1}
%       },
%     }{%
%       edge label/.wrap value={%
%         node [right,pos=.75, anchor=mid west] {#1}
%       },
%     },
%   },
  for tree={%
    grow=east,
    parent anchor=east,
    child anchor=west,
    calign=edge midpoint,
    edge+=->,
    block,
    edge={line},
    l sep+=10pt,
  },
  forked edges
 [some text, visible on=<1->
    [some more text, visible on=<2->
     [even more text, visible on=<3->]
       [more text again, visible on=<3->]
        [even some more text, visible on=<3->]
    ]
    [the last text, visible on=<2->
    ]
  ]
\end{forest}
\end{frame}
\end{document}