Require whitespace after a tag name

As discussed in #1990

Author: Gerrit0

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ### Bug Fixes
 
+-   Tags must now contain whitespace after the tag name to be parsed as a tag, `@jest/globals` in a comment will no longer be parsed as a tag #1990.
 -   The private member visibility option will now be respected in generated sites, #1992.
 -   Overload rendering will no longer be broken if JavaScript is disabled, #453.
 -   All overloads are now shown at once rather than requiring clicks to see the documentation for each signature, #1100.

src/lib/converter/comments/blockLexer.ts

@@ -201,7 +201,10 @@ function* lexBlockComment2(
                     }
                 }
 
-                if (lookahead !== pos + 1) {
+                if (
+                    lookahead !== pos + 1 &&
+                    (lookahead === end || /\s/.test(file[lookahead]))
+                ) {
                     braceStartsType = true;
                     yield makeToken(TokenSyntaxKind.Tag, lookahead - pos);
                     break;

src/lib/converter/comments/lineLexer.ts

@@ -167,7 +167,10 @@ function* lexLineComments2(
                     }
                 }
 
-                if (lookahead !== pos + 1) {
+                if (
+                    lookahead !== pos + 1 &&
+                    (lookahead === end || /\s/.test(file[lookahead]))
+                ) {
                     braceStartsType = true;
                     yield makeToken(TokenSyntaxKind.Tag, lookahead - pos);
                     break;

src/lib/converter/comments/rawLexer.ts

@@ -165,7 +165,10 @@ function* lexCommentString2(
                     }
                 }
 
-                if (lookahead !== pos + 1) {
+                if (
+                    lookahead !== pos + 1 &&
+                    (lookahead === end || /\s/.test(file[lookahead]))
+                ) {
                     braceStartsType = true;
                     yield makeToken(TokenSyntaxKind.Tag, lookahead - pos);
                     break;

src/test/comments.test.ts

@@ -253,6 +253,17 @@ describe("Block Comment Lexer", () => {
         ]);
     });
 
+    it("Should not mistake a scoped package for a tag", () => {
+        const tokens = lex("/* @typescript-eslint/parser @jest/globals */");
+        equal(tokens, [
+            {
+                kind: TokenSyntaxKind.Text,
+                text: "@typescript-eslint/parser @jest/globals",
+                pos: 3,
+            },
+        ]);
+    });
+
     it("Should allow escaping @ in an email", () => {
         const tokens = lex("/* test\\@example.com */");
         equal(tokens, [
@@ -651,6 +662,17 @@ describe("Line Comment Lexer", () => {
         ]);
     });
 
+    it("Should not mistake a scoped package for a tag", () => {
+        const tokens = lex("// @typescript-eslint/parser @jest/globals");
+        equal(tokens, [
+            {
+                kind: TokenSyntaxKind.Text,
+                text: "@typescript-eslint/parser @jest/globals",
+                pos: 3,
+            },
+        ]);
+    });
+
     it("Should allow escaping @ in an email", () => {
         const tokens = lex("// test\\@example.com");
         equal(tokens, [
@@ -949,6 +971,17 @@ describe("Raw Lexer", () => {
         ]);
     });
 
+    it("Should not mistake a scoped package for a tag", () => {
+        const tokens = lex("@typescript-eslint/parser @jest/globals");
+        equal(tokens, [
+            {
+                kind: TokenSyntaxKind.Text,
+                text: "@typescript-eslint/parser @jest/globals",
+                pos: 0,
+            },
+        ]);
+    });
+
     it("Should allow escaping @ in an email", () => {
         const tokens = lex("test\\@example.com");
         equal(tokens, [