doasedit

doasedit is the doas equivalent to sudoedit.
sudoedit is pretty nice but sudo is insecure and has had many vulnerabilities over the years, which is why, if you are on GNU/Linux, you should switch to doas. Most BSD users probably already use doas.

Installation

doas curl -sL "https://raw.githubusercontent.com/koalagang/doasedit/main/doasedit" -o /usr/bin/doasedit && doas chmod +x /usr/bin/doasedit

To uninstall, just run doas rm /usr/bin/doasedit

It is not 100% necessary but it is recommended that you enable persistence in your doas.conf for more convenient use. To enable persistence, (provided that you are part of the wheel group) add the following line to /etc/doas.conf:

permit persist :wheel

You should also make sure that /etc/doas.conf is owned by root but you have read permissions. If the file is writeable for anyone then you have a major security vulnerability on your system (anyone can give themselves root privilidges).
You can do this by issuing the following command:

doas chown -c root:root '/etc/doas.conf' && doas chmod 0444 '/etc/doas.conf'

If the source file is not readable then doasedit will not work. You can mark a file as readable with the following command:

doas chmod +r '/path/of/file'

doas is only required if the file is owned by root.

Some software hardcode the use of sudo if they need root privilidges. This issue can be overcome by uninstalling sudo and then symlinking doas to sudo with the following command:

Make sure to remove the sudo package first.

doas ln -s /usr/bin/doas /usr/bin/sudo