Improve explicit imports hygiene

Project.toml

@@ -24,8 +24,9 @@ SciMLBase = "1.73, 2"
 julia = "1.6"
 
 [extras]
+ExplicitImports = "7d51a73a-1435-4ff3-83d9-f097790105c7"
 ODEProblemLibrary = "fdc4e326-1af4-4b90-96e7-779fcce2daa5"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Test", "ODEProblemLibrary"]
+test = ["ExplicitImports", "Test", "ODEProblemLibrary"]

src/ODEInterfaceDiffEq.jl

@@ -2,13 +2,20 @@ __precompile__()
 
 module ODEInterfaceDiffEq
 
-    using Reexport
+    using Reexport: @reexport
     @reexport using DiffEqBase
-
-    using ODEInterface, Compat, DataStructures, FunctionWrappers
-    using LinearAlgebra
-
-    import DiffEqBase: solve
+    using DiffEqBase: DiffEqBase
+
+    import Compat
+    import FunctionWrappers
+    import ODEInterface
+    import SciMLBase
+    using DataStructures: BinaryMaxHeap, BinaryMinHeap, counter
+    using LinearAlgebra: I
+    using SciMLBase: CallbackSet, ReturnCode, VectorContinuousCallback, check_keywords,
+        warn_compat
+
+    import DiffEqBase: solve, initialize!, savevalues!
 
     const warnkeywords = (
         :save_idxs, :d_discontinuities, :unstable_check, :tstops,

test/explicit_imports.jl

@@ -0,0 +1,8 @@
+using ExplicitImports
+using ODEInterfaceDiffEq
+using Test
+
+@testset "ExplicitImports" begin
+    @test check_no_implicit_imports(ODEInterfaceDiffEq) === nothing
+    @test check_no_stale_explicit_imports(ODEInterfaceDiffEq) === nothing
+end

test/runtests.jl

@@ -1,6 +1,9 @@
 using ODEInterfaceDiffEq, DiffEqBase
 using Test
 
+@time @testset "Explicit Imports" begin
+    include("explicit_imports.jl")
+end
 @time @testset "Algorithms" begin
     include("algorithm_tests.jl")
 end