fix: while a fix provided for decorator detection and useful for inserting empty jsdoc blocks when fixers are enabled, it appears to have a 25% or so degradation in performance when tested with a large repository, so reverting.

Revert "fix: bug with false positive decorator detection (evident sans semi-colons); e.g., `require-jsdoc` fixer"

This reverts commit 6bda6b4.

Author: brettz9

README.md

@@ -9942,12 +9942,6 @@ Defaults to `true`.
 The following patterns are considered problems:
 
 ````js
-requestAnimationFrame(draw)
-
-function bench() {
-}
-// Message: Missing JSDoc comment.
-
 function quux (foo) {
 
 }

src/eslint/getJSDocComment.js

@@ -32,7 +32,8 @@ const getDecorator = (token, sourceCode) => {
         if (tokenBefore && tokenBefore.type === 'Punctuator') {
           if (tokenBefore.value === tokenClose) {
             nested++;
-          } else if (tokenBefore.value === tokenOpen) {
+          }
+          if (tokenBefore.value === tokenOpen) {
             if (nested) {
               nested--;
             } else {
@@ -42,16 +43,18 @@ const getDecorator = (token, sourceCode) => {
         }
       } while (tokenBefore);
 
-      return getDecorator(tokenBefore, sourceCode);
-    }
-    if (token.value === '@') {
-      return token;
+      return tokenBefore;
     }
   }
 
-  const tokenBfr = sourceCode.getTokenBefore(token, {includeComments: true});
+  if (token.type === 'Identifier') {
+    const tokenBefore = sourceCode.getTokenBefore(token, {includeComments: true});
+    if (tokenBefore && tokenBefore.type === 'Punctuator' && tokenBefore.value === '@') {
+      return tokenBefore;
+    }
+  }
 
-  return getDecorator(tokenBfr, sourceCode);
+  return false;
 };
 
 /**

test/rules/assertions/requireJsdoc.js

@@ -6,26 +6,6 @@ export default {
   invalid: [
     {
       code: `
-      requestAnimationFrame(draw)
-
-      function bench() {
-      }
-      `,
-      errors: [{
-        message: 'Missing JSDoc comment.',
-      }],
-      output: `
-      requestAnimationFrame(draw)
-
-      /**
-       *
-       */
-      function bench() {
-      }
-      `,
-    },
-    {
-      code: `
 function quux (foo) {
 
 }`,