From 0dcd8800cb6fa14c2b1e917b8ac560979a158521 Mon Sep 17 00:00:00 2001
From: Pierre Demailly <pierredemailly.pro@gmail.com>
Date: Sun, 5 Jan 2025 12:30:31 +0100
Subject: [PATCH] fix(eslint): allow unused var when leading underscore

---
 src/eslint/src/rules/variables.ts | 10 +++++++++-
 src/eslint/test/fixtures/pass.ts  |  4 ++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/eslint/src/rules/variables.ts b/src/eslint/src/rules/variables.ts
index 1de8137..5aa9e8c 100644
--- a/src/eslint/src/rules/variables.ts
+++ b/src/eslint/src/rules/variables.ts
@@ -27,5 +27,13 @@ export default {
   "no-undefined": "off",
 
   // See: https://eslint.org/docs/rules/no-unused-vars
-  "no-unused-vars": ["error", { "ignoreRestSiblings": true }]
+  "no-unused-vars": ["error", {
+    "args": "all",
+    "argsIgnorePattern": "^_",
+    "caughtErrors": "all",
+    "caughtErrorsIgnorePattern": "^_",
+    "destructuredArrayIgnorePattern": "^_",
+    "varsIgnorePattern": "^_",
+    "ignoreRestSiblings": true
+  }]
 };
diff --git a/src/eslint/test/fixtures/pass.ts b/src/eslint/test/fixtures/pass.ts
index c1739f8..544f442 100644
--- a/src/eslint/test/fixtures/pass.ts
+++ b/src/eslint/test/fixtures/pass.ts
@@ -1,2 +1,6 @@
 const foo: string = "bar";
 console.log(foo);
+function _shouldPassEvenIfNotUsedDueToLeading_(_boo: any) {
+  console.log("bar");
+}
+const _shadow = "foo";