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---@meta
-- Copyright (c) 2018. tangzx(love.tangzx@qq.com)
--
-- Licensed under the Apache License, Version 2.0 (the "License"); you may not
-- use this file except in compliance with the License. You may obtain a copy of
-- the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-- WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-- License for the specific language governing permissions and limitations under
-- the License.
--- @class coroutinelib
coroutine =
---
--- Creates a new coroutine, with body `f`. `f` must be a Lua function. Returns
--- this new coroutine, an object with type `"thread"`.
--- @param f async fun(...): any...
--- @return thread
--- @nodiscard
---
--- Returns true when the running coroutine can yield.
---
--- A running coroutine is yieldable if it is not the main thread and it is not
--- inside a non-yieldable C function.
--- @param co? thread
--- @return boolean
--- @nodiscard
--- @version >5.4
---
--- Closes coroutine `co` , closing all its pending to-be-closed variables and putting the coroutine in a dead state.
---
--- @param co thread
--- @return boolean noerror
--- @return any errorobject
---
--- Starts or continues the execution of coroutine `co`. The first time you
--- resume a coroutine, it starts running its body. The values `val1`, ...
--- are passed as the arguments to the body function. If the coroutine has
--- yielded, `resume` restarts it; the values `val1`, ... are passed as the
--- results from the yield.
---
--- If the coroutine runs without any errors, `resume` returns **true** plus any
--- values passed to `yield` (when the coroutine yields) or any values returned
--- by the body function (when the coroutine terminates). If there is any error,
--- `resume` returns **false** plus the error message.
--- @param co thread
--- @param val1? any
--- @param ... any
--- @return boolean success
--- @return any ...
--- @version 5.1, JIT
---
--- Returns the running coroutine, or nil when called by the main thread.
--- @return thread?
--- @nodiscard
--- @version >5.2
---
--- Returns the running coroutine plus a boolean, true when the running
--- coroutine is the main one.
--- @return thread, boolean
--- @nodiscard
---
--- Returns the status of coroutine `co`, as a string: "`running`", if the
--- coroutine is running (that is, it called `status`); "`suspended`", if the
--- coroutine is suspended in a call to `yield`, or if it has not started
--- running yet; "`normal`" if the coroutine is active but not running (that
--- is, it has resumed another coroutine); and "`dead`" if the coroutine has
--- finished its body function, or if it has stopped with an error.
--- @param co thread
--- @return
--- | "running" # Is running.
--- | "suspended" # Is suspended or not started.
--- | "normal" # Is active but not running.
--- | "dead" # Has finished or stopped with an error.
--- @nodiscard
---
--- Creates a new coroutine, with body `f`. `f` must be a Lua function. Returns
--- a function that resumes the coroutine each time it is called. Any arguments
--- passed to the function behave as the extra arguments to `resume`. Returns
--- the same values returned by `resume`, except the first
--- boolean. In case of error, propagates the error.
--- @param f async fun(...): any...
--- @return fun(...): any...
--- @nodiscard
---
--- Suspends the execution of the calling coroutine. Any arguments to `yield`
--- are passed as extra results to `resume`.
--- @async
--- @param ... any
--- @return any ...