Merge pull request #15 from kMutagene/master

Support netstandard2.0 by not using ArrayPool for that tfw

Author: dustinmoris

src/Giraffe.ViewEngine/Engine.fs

@@ -638,14 +638,23 @@ module RenderView =
 
     [<RequireQualifiedAccess>]
     module AsBytes =
-        open System.Buffers
 
         let private outputAsBytes (sb : StringBuilder) =
-            let chars = ArrayPool<char>.Shared.Rent sb.Length
+            let chars = 
+                #if NETSTANDARD2_0
+                Array.create (sb.Length) Char.MinValue
+                #else
+                System.Buffers.ArrayPool<char>.Shared.Rent sb.Length
+                #endif
+
             sb.CopyTo(0, chars, 0, sb.Length)
             let result = Encoding.UTF8.GetBytes(chars, 0, sb.Length)
             StringBuilderPool.Release sb
-            ArrayPool<char>.Shared.Return chars
+
+            #if !NETSTANDARD2_0
+            System.Buffers.ArrayPool<char>.Shared.Return chars
+            #endif
+
             result
 
         let xmlNode (node : XmlNode) : byte[] =

src/Giraffe.ViewEngine/Giraffe.ViewEngine.fsproj

@@ -8,7 +8,7 @@
     <NeutralLanguage>en-GB</NeutralLanguage>
 
     <!-- Build settings -->
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFrameworks>net5.0;netstandard2.0</TargetFrameworks>
     <DebugType>portable</DebugType>
     <OutputType>Library</OutputType>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
@@ -46,5 +46,5 @@
     <Compile Include="StringBuilderPool.fs" />
     <Compile Include="Engine.fs" />
   </ItemGroup>
-
+  
 </Project>