Merge pull request #45 from adamhathcock/expose-asyncenum-net20

Expose AsyncEnumerable on NETSTANDARD20 with dependency

Author: electricessence

Open.ChannelExtensions/Extensions.Source.cs

@@ -254,9 +254,7 @@ public static ChannelReader<T> Source<T>(
 		TextReader source,
 		CancellationToken cancellationToken)
 		=> Source(target, source, out _, false, cancellationToken);
-
-#if NETSTANDARD2_0
-#else
+	
 	/// <inheritdoc cref="SourceAsync{TWrite, TRead}(Channel{TWrite, TRead}, IEnumerable{ValueTask{TWrite}}, out ValueTask{long}, bool, CancellationToken)"/>
 	public static ChannelReader<TRead> Source<TWrite, TRead>(
 		this Channel<TWrite, TRead> target,
@@ -288,5 +286,4 @@ public static ChannelReader<TRead> Source<TWrite, TRead>(
 		IAsyncEnumerable<TWrite> source,
 		CancellationToken cancellationToken)
 		=> Source(target, source, false, cancellationToken);
-#endif
 }

Open.ChannelExtensions/Extensions.Write.cs

@@ -308,9 +308,7 @@ public static ValueTask<long> WriteAllLines(
 		bool complete,
 		CancellationToken cancellationToken)
 		=> WriteAllLines(target, source, complete, false, cancellationToken);
-
-#if NETSTANDARD2_0
-#else
+	
 	/// <summary>
 	/// Asynchronously writes all entries from the source to the channel.
 	/// </summary>
@@ -383,5 +381,4 @@ public static ValueTask<long> WriteAllAsync<T>(
 		bool complete,
 		CancellationToken cancellationToken)
 		=> WriteAllAsync(target, source, complete, false, cancellationToken);
-#endif
 }

Open.ChannelExtensions/Extensions._.cs

@@ -336,8 +336,7 @@ public static ChannelReader<T> ToChannel<T>(this IEnumerable<T> source,
 		=> CreateChannel<T>(capacity, singleReader)
 			.Source(source, deferredExecution, cancellationToken);
 
-#if NETSTANDARD2_0
-#else
+
 	/// <summary>
 	/// Writes all entries from the source to a channel and calls complete when finished.
 	/// </summary>
@@ -430,7 +429,6 @@ static async IAsyncEnumerable<TOut> AsAsyncEnumerableCore(Channel<TIn, TOut> cha
 				&& await reader.WaitToReadAsync(cancellationToken).ConfigureAwait(false));
 		}
 	}
-#endif
 
 	/// <summary>
 	/// Asynchronously executes all entries and writes their results to a channel.

Open.ChannelExtensions/Open.ChannelExtensions.csproj

@@ -54,6 +54,10 @@
 		<PackageReference Include="System.Collections.Immutable" Version="8.*" />
 	</ItemGroup>
 
+	<ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0' ">
+		<PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="6.0.0" />
+	</ItemGroup>
+
 	<!-- Disable the nullable warnings when compiling for .NET Standard 2.0 -->
 	<PropertyGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
 		<NoWarn>$(NoWarn);nullable</NoWarn>