Microsoft.Data.Sqlite reproduction

SqliteApp\Program.cs

using SqliteLib;

namespace SqliteApp
{
    class Program
    {
        public static void Main(string[] args) => new Foo();
    }
}

SqliteApp\SqliteApp.csproj

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net47</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <ProjectReference Include="..\SqliteLib\SqliteLib.csproj" />
  </ItemGroup>

</Project>

SqliteLib\Foo.cs

using Microsoft.Data.Sqlite;

namespace SqliteLib
{
    public class Foo
    {
        public Foo() => new SqliteConnection("Data Source=:memory:");
    }
}

SqliteLib\SqliteLib.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.Data.Sqlite" Version="2.1.0-rc1-final" />
  </ItemGroup>
</Project>