Handle namepaths inside JSDoc type expressions a bit better

src/compiler/parser.ts

@@ -2431,6 +2431,25 @@ namespace ts {
 
         function parseJSDocType(): TypeNode {
             scanner.setInJSDocType(true);
+            const moduleSpecifier = parseOptionalToken(SyntaxKind.ModuleKeyword);
+            if (moduleSpecifier) {
+                const moduleTag = createNode(SyntaxKind.JSDocNamepathType, moduleSpecifier.pos) as JSDocNamepathType;
+                terminate: while (true) {
+                    switch (token()) {
+                        case SyntaxKind.CloseBraceToken:
+                        case SyntaxKind.EndOfFileToken:
+                        case SyntaxKind.CommaToken:
+                        case SyntaxKind.WhitespaceTrivia:
+                            break terminate;
+                        default:
+                            nextTokenJSDoc();
+                    }
+                }
+
+                scanner.setInJSDocType(false);
+                return finishNode(moduleTag);
+            }
+
             const dotdotdot = parseOptionalToken(SyntaxKind.DotDotDotToken);
             let type = parseTypeOrTypePredicate();
             scanner.setInJSDocType(false);

src/compiler/scanner.ts

@@ -1995,7 +1995,7 @@ 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/compiler/types.ts

@@ -455,6 +455,8 @@ namespace ts {
         JSDocOptionalType,
         JSDocFunctionType,
         JSDocVariadicType,
+        // https://jsdoc.app/about-namepaths.html
+        JSDocNamepathType,
         JSDocComment,
         JSDocTypeLiteral,
         JSDocSignature,
@@ -2430,6 +2432,11 @@ namespace ts {
         type: TypeNode;
     }
 
+    export interface JSDocNamepathType extends JSDocType {
+        kind: SyntaxKind.JSDocNamepathType;
+        type: TypeNode;
+    }
+
     export type JSDocTypeReferencingNode = JSDocVariadicType | JSDocOptionalType | JSDocNullableType | JSDocNonNullableType;
 
     export interface JSDoc extends Node {

src/harness/fourslash.ts

@@ -1269,6 +1269,10 @@ 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);
 

tests/baselines/reference/api/tsserverlibrary.d.ts

@@ -374,29 +374,30 @@ declare namespace ts {
         JSDocOptionalType = 294,
         JSDocFunctionType = 295,
         JSDocVariadicType = 296,
-        JSDocComment = 297,
-        JSDocTypeLiteral = 298,
-        JSDocSignature = 299,
-        JSDocTag = 300,
-        JSDocAugmentsTag = 301,
-        JSDocAuthorTag = 302,
-        JSDocClassTag = 303,
-        JSDocCallbackTag = 304,
-        JSDocEnumTag = 305,
-        JSDocParameterTag = 306,
-        JSDocReturnTag = 307,
-        JSDocThisTag = 308,
-        JSDocTypeTag = 309,
-        JSDocTemplateTag = 310,
-        JSDocTypedefTag = 311,
-        JSDocPropertyTag = 312,
-        SyntaxList = 313,
-        NotEmittedStatement = 314,
-        PartiallyEmittedExpression = 315,
-        CommaListExpression = 316,
-        MergeDeclarationMarker = 317,
-        EndOfDeclarationMarker = 318,
-        Count = 319,
+        JSDocNamepathType = 297,
+        JSDocComment = 298,
+        JSDocTypeLiteral = 299,
+        JSDocSignature = 300,
+        JSDocTag = 301,
+        JSDocAugmentsTag = 302,
+        JSDocAuthorTag = 303,
+        JSDocClassTag = 304,
+        JSDocCallbackTag = 305,
+        JSDocEnumTag = 306,
+        JSDocParameterTag = 307,
+        JSDocReturnTag = 308,
+        JSDocThisTag = 309,
+        JSDocTypeTag = 310,
+        JSDocTemplateTag = 311,
+        JSDocTypedefTag = 312,
+        JSDocPropertyTag = 313,
+        SyntaxList = 314,
+        NotEmittedStatement = 315,
+        PartiallyEmittedExpression = 316,
+        CommaListExpression = 317,
+        MergeDeclarationMarker = 318,
+        EndOfDeclarationMarker = 319,
+        Count = 320,
         FirstAssignment = 60,
         LastAssignment = 72,
         FirstCompoundAssignment = 61,
@@ -423,9 +424,9 @@ declare namespace ts {
         LastBinaryOperator = 72,
         FirstNode = 149,
         FirstJSDocNode = 289,
-        LastJSDocNode = 312,
-        FirstJSDocTagNode = 300,
-        LastJSDocTagNode = 312,
+        LastJSDocNode = 313,
+        FirstJSDocTagNode = 301,
+        LastJSDocTagNode = 313,
     }
     export enum NodeFlags {
         None = 0,
@@ -1558,6 +1559,10 @@ declare namespace ts {
         kind: SyntaxKind.JSDocVariadicType;
         type: TypeNode;
     }
+    export interface JSDocNamepathType extends JSDocType {
+        kind: SyntaxKind.JSDocNamepathType;
+        type: TypeNode;
+    }
     export type JSDocTypeReferencingNode = JSDocVariadicType | JSDocOptionalType | JSDocNullableType | JSDocNonNullableType;
     export interface JSDoc extends Node {
         kind: SyntaxKind.JSDocComment;
@@ -5671,6 +5676,7 @@ declare namespace ts {
     }
 }
 declare namespace ts {
+    /** The classifier is used for syntactic highlighting in editors via the TSServer */
     function createClassifier(): Classifier;
 }
 declare namespace ts {

tests/baselines/reference/api/typescript.d.ts

@@ -374,29 +374,30 @@ declare namespace ts {
         JSDocOptionalType = 294,
         JSDocFunctionType = 295,
         JSDocVariadicType = 296,
-        JSDocComment = 297,
-        JSDocTypeLiteral = 298,
-        JSDocSignature = 299,
-        JSDocTag = 300,
-        JSDocAugmentsTag = 301,
-        JSDocAuthorTag = 302,
-        JSDocClassTag = 303,
-        JSDocCallbackTag = 304,
-        JSDocEnumTag = 305,
-        JSDocParameterTag = 306,
-        JSDocReturnTag = 307,
-        JSDocThisTag = 308,
-        JSDocTypeTag = 309,
-        JSDocTemplateTag = 310,
-        JSDocTypedefTag = 311,
-        JSDocPropertyTag = 312,
-        SyntaxList = 313,
-        NotEmittedStatement = 314,
-        PartiallyEmittedExpression = 315,
-        CommaListExpression = 316,
-        MergeDeclarationMarker = 317,
-        EndOfDeclarationMarker = 318,
-        Count = 319,
+        JSDocNamepathType = 297,
+        JSDocComment = 298,
+        JSDocTypeLiteral = 299,
+        JSDocSignature = 300,
+        JSDocTag = 301,
+        JSDocAugmentsTag = 302,
+        JSDocAuthorTag = 303,
+        JSDocClassTag = 304,
+        JSDocCallbackTag = 305,
+        JSDocEnumTag = 306,
+        JSDocParameterTag = 307,
+        JSDocReturnTag = 308,
+        JSDocThisTag = 309,
+        JSDocTypeTag = 310,
+        JSDocTemplateTag = 311,
+        JSDocTypedefTag = 312,
+        JSDocPropertyTag = 313,
+        SyntaxList = 314,
+        NotEmittedStatement = 315,
+        PartiallyEmittedExpression = 316,
+        CommaListExpression = 317,
+        MergeDeclarationMarker = 318,
+        EndOfDeclarationMarker = 319,
+        Count = 320,
         FirstAssignment = 60,
         LastAssignment = 72,
         FirstCompoundAssignment = 61,
@@ -423,9 +424,9 @@ declare namespace ts {
         LastBinaryOperator = 72,
         FirstNode = 149,
         FirstJSDocNode = 289,
-        LastJSDocNode = 312,
-        FirstJSDocTagNode = 300,
-        LastJSDocTagNode = 312,
+        LastJSDocNode = 313,
+        FirstJSDocTagNode = 301,
+        LastJSDocTagNode = 313,
     }
     export enum NodeFlags {
         None = 0,
@@ -1558,6 +1559,10 @@ declare namespace ts {
         kind: SyntaxKind.JSDocVariadicType;
         type: TypeNode;
     }
+    export interface JSDocNamepathType extends JSDocType {
+        kind: SyntaxKind.JSDocNamepathType;
+        type: TypeNode;
+    }
     export type JSDocTypeReferencingNode = JSDocVariadicType | JSDocOptionalType | JSDocNullableType | JSDocNonNullableType;
     export interface JSDoc extends Node {
         kind: SyntaxKind.JSDocComment;
@@ -5671,6 +5676,7 @@ declare namespace ts {
     }
 }
 declare namespace ts {
+    /** The classifier is used for syntactic highlighting in editors via the TSServer */
     function createClassifier(): Classifier;
 }
 declare namespace ts {

tests/baselines/reference/noAssertForUnparseableTypedefs.errors.txt

@@ -1,14 +1,8 @@
-tests/cases/conformance/jsdoc/bug26693.js(1,15): error TS2580: Cannot find name 'module'. Do you need to install type definitions for node? Try `npm i @types/node`.
-tests/cases/conformance/jsdoc/bug26693.js(1,21): error TS1005: '}' expected.
 tests/cases/conformance/jsdoc/bug26693.js(2,22): error TS2307: Cannot find module 'nope'.
 
 
-==== tests/cases/conformance/jsdoc/bug26693.js (3 errors) ====
+==== tests/cases/conformance/jsdoc/bug26693.js (1 errors) ====
     /** @typedef {module:locale} hi */
-                  ~~~~~~
-!!! error TS2580: Cannot find name 'module'. Do you need to install type definitions for node? Try `npm i @types/node`.
-                        ~
-!!! error TS1005: '}' expected.
     import { nope } from 'nope';
                          ~~~~~~
 !!! error TS2307: Cannot find module 'nope'.

tests/cases/fourslash/jsDocDontBreakWithNamespaces.ts

@@ -0,0 +1,45 @@
+///<reference path="fourslash.ts" />
+// @allowJs: true
+// @Filename: 31298.js
+/////**
+//// * @returns {module:@nodefuel/web~Webserver~wsServer#hello} Websocket server object
+//// */
+////function foo() { }
+////foo(''/*foo*/);
+////
+/////**
+//// * @type {module:xxxxx} */
+//// */
+////function bar() { }
+////bar(''/*bar*/);
+////
+/////** @type {function(module:xxxx, module:xxxx): module:xxxxx} */
+////function zee() { }
+////zee(''/*zee*/);
+
+
+verify.signatureHelp({
+  marker: "foo",
+  text: "foo(): any",
+  docComment: "",
+  tags: [
+    { name: "returns", text: "Websocket server object" },
+  ],
+});
+
+verify.signatureHelp({
+  marker: "bar",
+  text: "bar(): void",
+  docComment: "",
+  tags: [],
+});
+
+
+verify.signatureHelp({
+  marker: "zee",
+  text: "zee(): any",
+  docComment: "",
+  tags: [
+    { name: "type", text: "{function(module:xxxx, module:xxxx): module:xxxxx}" },
+  ],
+});