Stop generating .template.config files dynamically. Convert them to plain files on disk.

templates/ReactSpa/.template.config/dotnetcli.host.json

@@ -0,0 +1,17 @@
+{
+  "$schema": "http://json.schemastore.org/dotnetcli.host",
+  "symbolInfo": {
+    "TargetFrameworkOverride": {
+      "isHidden": "true",
+      "longName": "target-framework-override",
+      "shortName": ""
+    },
+    "Framework": {
+      "longName": "framework"
+    },
+    "skipRestore": {
+      "longName": "no-restore",
+      "shortName": ""
+    }
+  }
+}

templates/ReactSpa/.template.config/template.json

@@ -0,0 +1,87 @@
+{
+  "author": "Microsoft",
+  "classifications": [
+    "Web",
+    "MVC",
+    "SPA"
+  ],
+  "groupIdentity": "Microsoft.DotNet.Web.Spa.ProjectTemplates.React",
+  "identity": "Microsoft.DotNet.Web.Spa.ProjectTemplates.React.CSharp",
+  "name": "ASP.NET Core with React.js",
+  "preferNameDirectory": true,
+  "primaryOutputs": [
+    {
+      "path": "WebApplicationBasic.csproj"
+    }
+  ],
+  "shortName": "react",
+  "sourceName": "WebApplicationBasic",
+  "sources": [
+    {
+      "source": "./",
+      "target": "./",
+      "exclude": [
+        ".template.config/**"
+      ]
+    }
+  ],
+  "symbols": {
+    "TargetFrameworkOverride": {
+      "type": "parameter",
+      "description": "Overrides the target framework",
+      "replaces": "TargetFrameworkOverride",
+      "datatype": "string",
+      "defaultValue": ""
+    },
+    "Framework": {
+      "type": "parameter",
+      "description": "The target framework for the project.",
+      "datatype": "choice",
+      "choices": [
+        {
+          "choice": "netcoreapp2.0",
+          "description": "Target netcoreapp2.0"
+        }
+      ],
+      "replaces": "netcoreapp2.0",
+      "defaultValue": "netcoreapp2.0"
+    },
+    "HostIdentifier": {
+      "type": "bind",
+      "binding": "HostIdentifier"
+    },
+    "skipRestore": {
+      "type": "parameter",
+      "datatype": "bool",
+      "description": "If specified, skips the automatic restore of the project on create.",
+      "defaultValue": "false"
+    }
+  },
+  "tags": {
+    "language": "C#",
+    "type": "project"
+  },
+  "postActions": [
+    {
+      "condition": "(!skipRestore)",
+      "description": "Restore NuGet packages required by this project.",
+      "manualInstructions": [
+        {
+          "text": "Run 'dotnet restore'"
+        }
+      ],
+      "actionId": "210D431B-A78B-4D2F-B762-4ED3E3EA9025",
+      "continueOnError": true
+    },
+    {
+      "condition": "(HostIdentifier == \"dotnetcli\" || HostIdentifier == \"dotnetcli-preview\")",
+      "actionId": "AC1156F7-BB77-4DB8-B28F-24EEBCCA1E5C",
+      "description": "\n\n-------------------------------------------------------------------\nIMPORTANT: Before running this project on the command line,\n           you must restore NPM packages by running \"npm install\"\n-------------------------------------------------------------------\n",
+      "manualInstructions": [
+        {
+          "text": "Run \"npm install\""
+        }
+      ]
+    }
+  ]
+}

templates/ReactSpa/.template.config/vs-2017.3.host.json

@@ -0,0 +1,20 @@
+{
+  "$schema": "http://json.schemastore.org/vs-2017.3.host",
+  "name": {
+    "text": "React.js",
+    "package": "{0CD94836-1526-4E85-87D3-FB5274C5AFC9}",
+    "id": "1500"
+  },
+  "description": {
+    "text": "A project template for creating an ASP.NET Core application with React.js",
+    "package": "{0CD94836-1526-4E85-87D3-FB5274C5AFC9}",
+    "id": "1501"
+  },
+  "order": 301,
+  "icon": "icon.png",
+  "learnMoreLink": "https://github.com/aspnet/JavaScriptServices",
+  "uiFilters": [
+    "oneaspnet"
+  ],
+  "minFullFrameworkVersion": "4.6.1"
+}