Neovim’s vim.keymap.set and similar utilities are very useful for creating and managing keymaps, however they lack some ergonomics when building more complex keymaps that require setting and deleting the keymaps periodically. A simply utility function makes this really clean and easy to do.

I’ve called this function map_fn (because I honestly couldn’t come up with a better name), and when called it will return a class containing chainable set and del methods.

--- @class Map
--- @field set fun(): Map
--- @field del fun(): Map
​
--- Creates a keymap function
--- @param mode string|table
--- @param key string