local function bind(op, outer_opts)
    local outer_opts0 = (outer_opts or {noremap = true})
    local function lo(lhs, rhs, opts)
        local opts0 = vim.tbl_extend("force", outer_opts0, (opts or {}))
        return vim.keymap.set(op, lhs, rhs, opts0)
    end
    return lo
end

local nmap = bind("n", {noremap = false})
local nnoremap = bind("n")
local vnoremap = bind("v")
local xnoremap = bind("x")
local inoremap = bind("i")
local tnoremap = bind("t")

return {
    nmap = nmap,
    nnoremap = nnoremap,
    tnoremap = tnoremap,
    vnoremap = vnoremap,
    xnoremap = xnoremap,
    inoremap = inoremap
}