From 715440a64ffe3f0d84082653485f16ee686cbe23 Mon Sep 17 00:00:00 2001
From: Jordan Harband <ljharb@gmail.com>
Date: Wed, 27 Oct 2021 15:17:22 -0700
Subject: [PATCH] fix: Dispatch on eslint 8 differences

---
 src/lib/rule-finder.js | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/src/lib/rule-finder.js b/src/lib/rule-finder.js
index 26f2229..63afb82 100644
--- a/src/lib/rule-finder.js
+++ b/src/lib/rule-finder.js
@@ -19,12 +19,20 @@ function _getConfigFile(specifiedFile) {
 }
 
 function _getConfigs(configFile, files) {
-  const cliEngine = new eslint.CLIEngine({
-    // Ignore any config applicable depending on the location on the filesystem
-    useEslintrc: false,
-    // Point to the particular config
-    configFile
-  });
+  const cliEngine = eslint.ESLint
+    ?  new eslint.ESLint({
+      // Ignore any config applicable depending on the location on the filesystem
+      useEslintrc: false,
+      // Point to the particular config
+      overrideConfigFile: configFile
+    })
+    : new eslint.CLIEngine({
+      // Ignore any config applicable depending on the location on the filesystem
+      useEslintrc: false,
+      // Point to the particular config
+      configFile
+    });
+
   return new Set(files
                  .map(filePath => cliEngine.isPathIgnored(filePath) ? false : cliEngine.getConfigForFile(filePath))
                  .filter(Boolean));
@@ -67,7 +75,7 @@ function _getPluginRules(config) {
 }
 
 function _getCoreRules() {
-  return eslint.linter.getRules();
+  return (eslint.Linter ? new eslint.Linter() : eslint.linter).getRules();
 }
 
 function _filterRuleNames(ruleNames, rules, predicate) {