Function is_nix_function_binding

internal/cbm/extract_usages.c:914–919

}

static bool is_nix_function_binding(TSNode node) {
    /* tree-sitter-nix names a simple `x: body` binder `universal`; set
     * destructuring uses the distinct `formals` field. */
    static const char *const fields[] = {"universal", "formals", NULL};
    return ancestor_field_binds(node, "function_expression", fields);
}

static bool is_lean_binder_name(TSNode node) {
    static const char *const binder_kinds[] = {"explicit_binder", "implicit_binder",