How can I port nmap, map, and imap commands to Lua configuration?

Question

How can I port map commands in my vimrc file to Neovim lua configuration? For example:

nmap <silent> <F2> <Plug>(lcn-rename)

Answer 1

You use vim.api.nvim_set_keymap

vim.api.nvim_set_keymap(mode, keys, mapping, options)

So to port

nmap <silent> <F2> <Plug>(lcn-rename)

It would look like

vim.api.nvim_set_keymap('n', '<F2>', "<Plug>(lcn-rename')", { noremap = true, silent = true });

Alternatively you can create convenience functions,

function map(mode, shortcut, command)
  vim.api.nvim_set_keymap(mode, shortcut, command, { noremap = true, silent = true })
end

function nmap(shortcut, command)
  map('n', shortcut, command)
end

function imap(shortcut, command)
  map('i', shortcut, command)
end