As a simple example, I would like to annotate the following @guard x string. This is in effect returning a boolean, which narrows down the type of the argument x.
---@param x unknown
---@guard x string
local function isString(x)
return type(x) == "string"
end
---@param x string | number
local function main(x)
if isString(x) then
-- x is string
print(x)
else
-- x is number
print(x)
end
end
As a simple example, I would like to annotate the following
@guard x string. This is in effect returning a boolean, which narrows down the type of the argument x.