No function expr in JS with GritQL

json

{  "$schema": ".node_modules/@biomejs/biome/configuration_schema.json",  "plugins": ["./plugins/no-fn-decl.grit", "./plugins/no-fn-expr.grit"],  "linter": {    "enabled": true,    "rules": {      "recommended": true,      "complexity": {        "useArrowFunction": "error"      }    }  }}

language js;
`$var = function $maybeName?($params) { $body }` where {  register_diagnostic(    span = $var,    message = "Prefer an arrow function over a function expression"  )}

language js;
`function $name($params) { $body }` where {  register_diagnostic(    span = $name,    message = "Use `const $name = ($params) => …` instead of a function declaration"  )}