Report jsdoc syntax errors when checkJs is on

Author: sandersn

src/compiler/parser.ts

@@ -6322,6 +6322,12 @@ namespace ts {
                     comment.parent = parent;
                 }
 
+                if (isInJavaScriptFile(parent)) {
+                    if (!sourceFile.jsDocDiagnostics) {
+                        sourceFile.jsDocDiagnostics = [];
+                    }
+                    sourceFile.jsDocDiagnostics.push(...parseDiagnostics);
+                }
                 currentToken = saveToken;
                 parseDiagnostics.length = saveParseDiagnosticsLength;
                 parseErrorBeforeNextFinishedNode = saveParseErrorBeforeNextFinishedNode;

src/compiler/program.ts

@@ -1021,6 +1021,9 @@ namespace ts {
             if (isSourceFileJavaScript(sourceFile)) {
                 if (!sourceFile.additionalSyntacticDiagnostics) {
                     sourceFile.additionalSyntacticDiagnostics = getJavaScriptSyntacticDiagnosticsForFile(sourceFile);
+                    if (isCheckJsEnabledForFile(sourceFile, options)) {
+                        sourceFile.additionalSyntacticDiagnostics = concatenate(sourceFile.additionalSyntacticDiagnostics, sourceFile.jsDocDiagnostics);
+                    }
                 }
                 return concatenate(sourceFile.additionalSyntacticDiagnostics, sourceFile.parseDiagnostics);
             }

src/compiler/types.ts

@@ -2312,16 +2312,19 @@ namespace ts {
         /* @internal */ identifierCount: number;
         /* @internal */ symbolCount: number;
 
-        // File level diagnostics reported by the parser (includes diagnostics about /// references
+        // File-level diagnostics reported by the parser (includes diagnostics about /// references
         // as well as code diagnostics).
         /* @internal */ parseDiagnostics: Diagnostic[];
 
-        // Stores additional file level diagnostics reported by the program
-        /* @internal */ additionalSyntacticDiagnostics?: Diagnostic[];
-
-        // File level diagnostics reported by the binder.
+        // File-level diagnostics reported by the binder.
         /* @internal */ bindDiagnostics: Diagnostic[];
 
+        // File-level JSDoc diagnostics reported by the JSDoc parser
+        /* @internal */ jsDocDiagnostics?: Diagnostic[];
+
+        // Stores additional file-level diagnostics reported by the program
+        /* @internal */ additionalSyntacticDiagnostics?: Diagnostic[];
+
         // Stores a line map for the file.
         // This field should never be used directly to obtain line map, use getLineMap function instead.
         /* @internal */ lineMap: number[];