tools: update to ESLint 4.3.0

PR-URL: https://github.com/nodejs/node/pull/14417
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Teddy Katz <teddy.katz@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Refael Ackermann <refack@gmail.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/tools/eslint/lib/rules/no-extra-parens.js b/tools/eslint/lib/rules/no-extra-parens.js
index fd6fd0b78b..879529bf09 100644
--- a/tools/eslint/lib/rules/no-extra-parens.js
+++ b/tools/eslint/lib/rules/no-extra-parens.js
@@ -418,6 +418,7 @@ module.exports = {
         function checkExpressionOrExportStatement(node) {
             const firstToken = isParenthesised(node) ? sourceCode.getTokenBefore(node) : sourceCode.getFirstToken(node);
             const secondToken = sourceCode.getTokenAfter(firstToken, astUtils.isNotOpeningParenToken);
+            const thirdToken = secondToken ? sourceCode.getTokenAfter(secondToken) : null;
 
             if (
                 astUtils.isOpeningParenToken(firstToken) &&
@@ -427,7 +428,8 @@ module.exports = {
                         secondToken.value === "function" ||
                         secondToken.value === "class" ||
                         secondToken.value === "let" && astUtils.isOpeningBracketToken(sourceCode.getTokenAfter(secondToken, astUtils.isNotClosingParenToken))
-                    )
+                    ) ||
+                    secondToken && secondToken.type === "Identifier" && secondToken.value === "async" && thirdToken && thirdToken.type === "Keyword" && thirdToken.value === "function"
                 )
             ) {
                 tokensToIgnore.add(secondToken);