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--- Capture `fn`'s upvalues and pass to `delegate`
---@param delegate fun(env: table<string, any>, _: ...): ...
---@param fn function
---@return fun(...): ...
return function(delegate, fn)
local upvalues = {}
for i = 1, debug.getinfo(fn, "u").nups do
local name, value = debug.getupvalue(fn, i)
upvalues[name] = value
end
return function(...)
return delegate(upvalues, ...)
end
end
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