From 4caa34449555d8a680222ec2049d97c59476c11e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=94=AF=E7=84=B6?= <weiran.zsd@outlook.com>
Date: Mon, 8 May 2023 00:52:27 +0800
Subject: [PATCH] refactor: locateConfigFileToUse returns an Error object
 (#17159)

followup of https://github.com/eslint/eslint/pull/17151#discussion_r1185750069
---
 lib/eslint/flat-eslint.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/eslint/flat-eslint.js b/lib/eslint/flat-eslint.js
index faf055b265e..8444153076d 100644
--- a/lib/eslint/flat-eslint.js
+++ b/lib/eslint/flat-eslint.js
@@ -326,7 +326,7 @@ async function loadFlatConfigFile(filePath) {
  * as override config file is not explicitly set to `false`, it will search
  * upwards from the cwd for a file named `eslint.config.js`.
  * @param {import("./eslint").ESLintOptions} options The ESLint instance options.
- * @returns {{configFilePath:string,basePath:string,error:boolean}} Location information for
+ * @returns {{configFilePath:string,basePath:string,error:Error|null}} Location information for
  *      the config file.
  */
 async function locateConfigFileToUse({ configFile, cwd }) {
@@ -334,7 +334,7 @@ async function locateConfigFileToUse({ configFile, cwd }) {
     // determine where to load config file from
     let configFilePath;
     let basePath = cwd;
-    let error = false;
+    let error = null;
 
     if (typeof configFile === "string") {
         debug(`Override config file path is ${configFile}`);
@@ -346,7 +346,7 @@ async function locateConfigFileToUse({ configFile, cwd }) {
         if (configFilePath) {
             basePath = path.resolve(path.dirname(configFilePath));
         } else {
-            error = true;
+            error = new Error("Could not find config file.");
         }
 
     }
@@ -385,7 +385,7 @@ async function calculateConfigArray(eslint, {
 
     // config file is required to calculate config
     if (error) {
-        throw new Error("Could not find config file.");
+        throw error;
     }
 
     const configs = new FlatConfigArray(baseConfig || [], { basePath, shouldIgnore });