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---@meta
---@class io
---@field stdin file
---@field stdout file
---@field stderr file
io = {}
---@alias openmode
---|>'"r"'
---| '"w"'
---| '"a"'
---| '"r+"'
---| '"w+"'
---| '"a+"'
---| '"rb"'
---| '"wb"'
---| '"ab"'
---| '"r+b"'
---| '"w+b"'
---| '"a+b"'
---@param file file?
---@return boolean suc?
---@return exitcode exitcode?
---@return integer code?
function io.close(file) end
function io.flush() end
---@overload fun():file
---@param file string|file
function io.input(file) end
---@param filename string?
---@vararg readmode
---@return fun():string|number
function io.lines(filename, ...) end
---@param filename string
---@param mode openmode
---@return file?
---@return string errmsg?
function io.open(filename, mode) end
---@overload fun():file
---@param file string|file
function io.output(file) end
---@alias popenmode
---| '"r"'
---| '"w"'
---@param prog string
---@param mode popenmode?
---@return file?
---@return string errmsg?
function io.popen(prog, mode) end
---@vararg readmode
---@return string|number
---@return ...
function io.read(...) end
---@return file
function io.tmpfile() end
---@alias filetype
---| '"file"'
---| '"closed file"'
---| 'nil'
---@param file file
---@return filetype
function io.type(file) end
---@return file
---@return string errmsg?
function io.write(...) end
return io
|
