Add default conversion for IO (#9)

Project.toml

@@ -1,7 +1,7 @@
 name = "PrecompileSignatures"
 uuid = "91cefc8d-f054-46dc-8f8c-26e11d7c5411"
 authors = ["Rik Huijzer <[email protected]>"]
-version = "3.0.1"
+version = "3.0.2"
 
 [deps]
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"

src/PrecompileSignatures.jl

@@ -134,7 +134,10 @@ end
 
 const SUBMODULES_DEFAULT = true
 const SPLIT_UNIONS_DEFAULT = true
-const TYPE_CONVERSIONS_DEFAULT = Dict{DataType,DataType}(AbstractString => String)
+const TYPE_CONVERSIONS_DEFAULT = Dict{DataType,DataType}(
+        AbstractString => String,
+        IO => IOStream
+    )
 
 """
     Config(

test/runtests.jl

@@ -10,9 +10,10 @@ module M
     b(x::Any) = x
     b(x::Union{Float64,Float32}) = b(x)
     c(x::T) where {T<:AbstractString} = x
+    d(x::IO, y::AbstractString) = x
 end
 
-@test P._module_functions(M) == [M.a, M.b, M.c]
+@test P._module_functions(M) == [M.a, M.b, M.c, M.d]
 
 @test P._unpack_union!(Union{Float64, Int, String, Symbol}) == [Float64, Int, String, Symbol]
 
@@ -78,7 +79,8 @@ sig = Tuple{M.a, Union{String, Number}, Union{Float32, String}}
 @test Set(P.precompilables(M)) == Set([
     Tuple{typeof(Main.M.a), Int},
     Tuple{typeof(Main.M.b), Float64},
-    Tuple{typeof(Main.M.b), Float32}
+    Tuple{typeof(Main.M.b), Float32},
+    Tuple{typeof(Main.M.d), IOStream, String}
 ])
 
 types = P.precompilables(PlutoRunner)