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local M = {}
---@generic T : table
---@param initial_state T
---@param subscriber fun(state: T)
function M.create_state_container(initial_state, subscriber)
-- we do deepcopy to make sure instances of state containers doesn't mutate the initial state
local state = vim.deepcopy(initial_state)
local has_unsubscribed = false
---@param mutate_fn fun(current_state: table)
return function(mutate_fn)
mutate_fn(state)
if not has_unsubscribed then
subscriber(state)
end
end, function()
return state
end, function(val)
has_unsubscribed = val
end
end
return M
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