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-rw-r--r--src/fexpr/mod.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/fexpr/mod.rs b/src/fexpr/mod.rs
index 1738e44..f765acf 100644
--- a/src/fexpr/mod.rs
+++ b/src/fexpr/mod.rs
@@ -13,6 +13,7 @@ use thiserror::Error;
trait DateProducer = filters::values::Producer<Output = chrono::DateTime<chrono::Utc>>;
trait DurationProducer = filters::values::Producer<Output = chrono::Duration>;
+trait CountProducer = filters::values::Producer<Output = u8>;
lalrpop_mod!(#[allow(clippy::all)] pub grammar, "/fexpr/grammar.rs");