Check for unused function arguments (#6583)

* eslint: Check for unused function arguments

* eslint: Ignore unused '_' in argument list

Also allow any number of '_' e.g., '__' or '___' which is to be used sparingly

* Remove and rename unused arguments

1 files changed, 1 insertions, 1 deletions

diff --git a/.eslintrc b/.eslintrc
index ecf59c68c..53033b753 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -133,7 +133,7 @@
     "no-unneeded-ternary": [2, { "defaultAssignment": false }],
     "no-unreachable": 2,
     "no-unsafe-finally": 2,
-    "no-unused-vars": [2, { "vars": "all", "args": "none" }],
+    "no-unused-vars": [2, { "vars": "all", "args": "all", "argsIgnorePattern": "[_]+" }],
     "no-useless-call": 2,
     "no-useless-computed-key": 2,
     "no-useless-constructor": 2,