Add missing index.ts files to user projects

This makes the language service treat .js files inside node_modules as
part of the parent project, so that you can view the same errors in the
editor as you see in the baselines.

Also update a comment in the parser that I missed in an earlier PR.

Author: sandersn

src/compiler/parser.ts

@@ -3355,7 +3355,7 @@ namespace ts {
                         type = finishNode(factory.createJSDocNonNullableType(type), pos);
                         break;
                     case SyntaxKind.QuestionToken:
-                        // If not in JSDoc and next token is start of a type we have a conditional type
+                        // If next token is start of a type we have a conditional type
                         if (lookAhead(nextTokenIsStartOfType)) {
                             return type;
                         }

tests/cases/user/acorn/index.ts

@@ -0,0 +1 @@
+import x = require('acorn');

tests/cases/user/acorn/tsconfig.json

@@ -7,8 +7,16 @@
         "noEmit": true,
         "allowJs": true,
         "checkJs": true,
-        "types": ["node"],
-        "lib": ["esnext", "dom"],
+        "types": [
+            "node"
+        ],
+        "lib": [
+            "esnext",
+            "dom"
+        ]
     },
-    "include": ["node_modules/acorn"]
-}
+    "include": [
+        "node_modules/acorn",
+        "index.ts"
+    ]
+}

tests/cases/user/adonis-framework/index.ts

@@ -0,0 +1 @@
+import x = require('adonis-framework/src/View');

tests/cases/user/adonis-framework/tsconfig.json

@@ -7,8 +7,16 @@
         "noEmit": true,
         "allowJs": true,
         "checkJs": true,
-        "types": ["node"],
-        "lib": ["esnext", "dom"],
+        "types": [
+            "node"
+        ],
+        "lib": [
+            "esnext",
+            "dom"
+        ]
     },
-    "include": ["node_modules/adonis-framework"]
-}
+    "include": [
+        "node_modules/adonis-framework",
+        "index.ts"
+    ]
+}

tests/cases/user/assert/index.ts

@@ -0,0 +1 @@
+import x = require('assert');

tests/cases/user/assert/tsconfig.json

@@ -7,8 +7,16 @@
         "noEmit": true,
         "allowJs": true,
         "checkJs": true,
-        "types": ["node"],
-        "lib": ["esnext", "dom"],
+        "types": [
+            "node"
+        ],
+        "lib": [
+            "esnext",
+            "dom"
+        ]
     },
-    "include": ["node_modules/assert"]
-}
+    "include": [
+        "node_modules/assert",
+        "index.ts"
+    ]
+}

tests/cases/user/async/index.ts

@@ -0,0 +1 @@
+import async_ = require('async');

tests/cases/user/async/tsconfig.json

@@ -10,5 +10,5 @@
         "types": ["node"],
         "lib": ["esnext", "dom"],
     },
-    "include": ["node_modules/async"]
+    "include": ["index.ts", "node_modules/async"]
 }

tests/cases/user/bcryptjs/index.ts

@@ -0,0 +1 @@
+import x = require('bcryptjs');