Support more terminators for parsing jsdoc filepaths

src/compiler/parser.ts

@@ -2428,17 +2428,19 @@ namespace ts {
 
         function parseJSDocType(): TypeNode {
             scanner.setInJSDocType(true);
-            const dotdotdot = parseOptionalToken(SyntaxKind.DotDotDotToken);
             const moduleSpecifier = parseOptionalToken(SyntaxKind.ModuleKeyword);
-            let type = parseTypeOrTypePredicate();
-            scanner.setInJSDocType(false);
             if (moduleSpecifier) {
                 const moduleTag = createNode(SyntaxKind.JSDocNamepathType, moduleSpecifier.pos) as JSDocNamepathType;
-                while (token() !== SyntaxKind.CloseBraceToken && token() !== SyntaxKind.EndOfFileToken) {
+                const terminators = [SyntaxKind.CloseBraceToken, SyntaxKind.EndOfFileToken, SyntaxKind.CommaToken, SyntaxKind.CloseParenToken];
+                while (terminators.indexOf(token()) < 0) {
                     nextTokenJSDoc();
                 }
-                type = finishNode(moduleTag);
+                return finishNode(moduleTag);
             }
+
+            const dotdotdot = parseOptionalToken(SyntaxKind.DotDotDotToken);
+            let type = parseTypeOrTypePredicate();
+            scanner.setInJSDocType(false);
             if (dotdotdot) {
                 const variadic = createNode(SyntaxKind.JSDocVariadicType, dotdotdot.pos) as JSDocVariadicType;
                 variadic.type = type;

src/compiler/scanner.ts

@@ -1983,7 +1983,7 @@ namespace ts {
             // First non-whitespace character on this line.
             let firstNonWhitespace = 0;
             // These initial values are special because the first line is:
-            // firstNonWhitespace = 0 to indicate that we want leading whitspace,
+            // firstNonWhitespace = 0 to indicate that we want leading whitespace,
 
             while (pos < end) {
                 char = text.charCodeAt(pos);

src/harness/fourslash.ts

@@ -1268,6 +1268,10 @@ namespace FourSlash {
 
         private verifySignatureHelpWorker(options: FourSlashInterface.VerifySignatureHelpOptions) {
             const help = this.getSignatureHelp({ triggerReason: options.triggerReason })!;
+            if (!help) {
+                this.raiseError("Could not get a help signature");
+            }
+
             const selectedItem = help.items[help.selectedItemIndex];
             // Argument index may exceed number of parameters
             const currentParameter = selectedItem.parameters[help.argumentIndex] as ts.SignatureHelpParameter | undefined;

src/services/classifier.ts

@@ -1,4 +1,5 @@
 namespace ts {
+    /** The classifier is used for syntactic highlighting in editors via the TSServer */
     export function createClassifier(): Classifier {
         const scanner = createScanner(ScriptTarget.Latest, /*skipTrivia*/ false);