Implementing JavaScript compiler (transpiler) and TypeScript support

Author: fabiocav

.gitignore

@@ -14,4 +14,5 @@ Publish
 /TestResults
 
 /tools/NuGet.exe
-/node_modules
+/node_modules
+/.output

CustomDictionary.xml

@@ -82,6 +82,7 @@
       <Term CompoundAlternate="TableName">tableName</Term>
       <Term CompoundAlternate="ETag">etag</Term>
       <Term CompoundAlternate="ETag">eTag</Term>
+      <Term CompoundAlternate="Typescript">TypeScript</Term>
     </Compound>
     <DiscreteExceptions>
 		<Term>WebJobs</Term>

WebJobs.Script.sln

@@ -442,6 +442,12 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "swagger", "swagger", "{DCC9
 		sample\.azurefunctions\swagger\swagger.json = sample\.azurefunctions\swagger\swagger.json
 	EndProjectSection
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "HttpTrigger-TypeScript", "HttpTrigger-TypeScript", "{62489417-341D-42AD-9E84-E97EB8236979}"
+	ProjectSection(SolutionItems) = preProject
+		sample\HttpTrigger-TypeScript\function.json = sample\HttpTrigger-TypeScript\function.json
+		sample\HttpTrigger-TypeScript\index.ts = sample\HttpTrigger-TypeScript\index.ts
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SharedMSBuildProjectFiles) = preSolution
 		test\WebJobs.Script.Tests.Shared\WebJobs.Script.Tests.Shared.projitems*{35a2025d-f68a-4b57-83a2-ed4eb9c3894d}*SharedItemsImports = 4
@@ -566,5 +572,6 @@ Global
 		{EB76E1C8-C823-4707-BD83-20304425EFC4} = {FF9C0818-30D3-437A-A62D-7A61CA44F459}
 		{7D50E081-A161-4E83-A6D4-F8529E518613} = {FF9C0818-30D3-437A-A62D-7A61CA44F459}
 		{DCC9EBEB-5F60-4117-95D2-26507F9DE9A6} = {7D50E081-A161-4E83-A6D4-F8529E518613}
+		{62489417-341D-42AD-9E84-E97EB8236979} = {FF9C0818-30D3-437A-A62D-7A61CA44F459}
 	EndGlobalSection
 EndGlobal

sample/HttpTrigger-TypeScript/function.json

@@ -0,0 +1,15 @@
+{
+    "bindings": [
+        {
+            "type": "httpTrigger",
+            "name": "req",
+            "direction": "in",
+            "methods": [ "get" ]
+        },
+        {
+            "type": "http",
+            "name": "$return",
+            "direction": "out"
+        }
+    ]
+}

sample/HttpTrigger-TypeScript/index.ts

@@ -0,0 +1,29 @@
+export function index(context: any, req: any) {
+    context.log('Node.js HTTP trigger function processed a request. Name=%s', req.query.name);
+    var headerValue = req.headers['test-header'];
+    if (headerValue) {
+        context.log('test-header=' + headerValue);
+    }
+
+    var res;
+    if (typeof req.query.name == 'undefined') {
+        res = {
+            status: 400,
+            body: "Please pass a name on the query string",
+            headers: {
+                'Content-Type': 'text/plain'
+            }
+        };
+    }
+    else {
+        res = {
+            status: 200,
+            body: "Hello" + req.query.name,
+            headers: {
+                'Content-Type': 'text/plain'
+            }
+        };
+    }
+
+    context.done(null, res);
+}

src/WebJobs.Script.WebHost/App_Data/secrets/httptrigger-typescript.json

@@ -0,0 +1,9 @@
+{
+  "keys": [
+    {
+      "name": "default",
+      "value": "YdNA3eqpIMrJeYX567Lh5f2oPSQjOloCkKlnrJLzZIZZHtKcMckBiQ==",
+      "encrypted": false
+    }
+  ]
+}

src/WebJobs.Script/Description/Compilation/ICompilation.cs

@@ -0,0 +1,22 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+using System;
+using System.Collections.Immutable;
+using System.Threading;
+using Microsoft.CodeAnalysis;
+
+namespace Microsoft.Azure.WebJobs.Script.Description
+{
+    public interface ICompilation
+    {
+        ImmutableArray<Diagnostic> GetDiagnostics();
+
+        object Emit(CancellationToken cancellationToken);
+    }
+
+    public interface ICompilation<TOutput> : ICompilation
+    {
+        new TOutput Emit(CancellationToken cancellationToken);
+    }
+}

src/WebJobs.Script/Description/Compilation/ICompilationService.cs

@@ -0,0 +1,28 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace Microsoft.Azure.WebJobs.Script.Description
+{
+    public interface ICompilationService
+    {
+        string Language { get; }
+
+        /// <summary>
+        /// Gets a value indicating whether this compilation service persists compilation output to the common file system.
+        /// </summary>
+        bool PersistsOutput { get; }
+
+        IEnumerable<string> SupportedFileTypes { get; }
+
+        Task<object> GetFunctionCompilationAsync(FunctionMetadata functionMetadata);
+    }
+
+    public interface ICompilationService<TCompilation> : ICompilationService where TCompilation : ICompilation
+    {
+        new Task<TCompilation> GetFunctionCompilationAsync(FunctionMetadata functionMetadata);
+    }
+}

src/WebJobs.Script/Description/DotNet/ICompilationServiceFactory.cs renamed to src/WebJobs.Script/Description/Compilation/ICompilationServiceFactory.cs

@@ -6,10 +6,10 @@
 
 namespace Microsoft.Azure.WebJobs.Script.Description
 {
-    public interface ICompilationServiceFactory
+    public interface ICompilationServiceFactory<TCompilationService, TMetadata> where TCompilationService : ICompilationService
     {
         ImmutableArray<ScriptType> SupportedScriptTypes { get; }
 
-        ICompilationService CreateService(ScriptType scriptType, IFunctionMetadataResolver metadataResolver);
+        TCompilationService CreateService(ScriptType scriptType, TMetadata metadata);
     }
 }