diff --git a/packages/compiler/src/template/pipeline/ir/src/enums.ts b/packages/compiler/src/template/pipeline/ir/src/enums.ts
index 776e9c25d59..9d2e9ecd422 100644
--- a/packages/compiler/src/template/pipeline/ir/src/enums.ts
+++ b/packages/compiler/src/template/pipeline/ir/src/enums.ts
@@ -528,3 +528,13 @@ export enum DeferTriggerKind {
   Interaction,
   Viewport,
 }
+
+/**
+ * Repeaters implicitly define these derived variables, and child nodes may read them.
+ */
+export enum DerivedRepeaterVarIdentity {
+  First,
+  Last,
+  Even,
+  Odd,
+}
diff --git a/packages/compiler/src/template/pipeline/ir/src/expression.ts b/packages/compiler/src/template/pipeline/ir/src/expression.ts
index 6b750b87c99..a7adb7c7f2b 100644
--- a/packages/compiler/src/template/pipeline/ir/src/expression.ts
+++ b/packages/compiler/src/template/pipeline/ir/src/expression.ts
@@ -10,7 +10,7 @@ import * as o from '../../../../output/output_ast';
 import type {ParseSourceSpan} from '../../../../parse_util';
 
 import * as t from '../../../../render3/r3_ast';
-import {ExpressionKind, OpKind, SanitizerFn} from './enums';
+import {DerivedRepeaterVarIdentity, ExpressionKind, OpKind, SanitizerFn} from './enums';
 import {ConsumesVarsTrait, UsesVarOffset, UsesVarOffsetTrait} from './traits';
 import {SlotHandle} from './handle';
 import type {XrefId} from './operations';
@@ -820,13 +820,6 @@ export class ConditionalCaseExpr extends ExpressionBase {
   }
 }
 
-export enum DerivedRepeaterVarIdentity {
-  First,
-  Last,
-  Even,
-  Odd,
-}
-
 export class DerivedRepeaterVarExpr extends ExpressionBase {
   override readonly kind = ExpressionKind.DerivedRepeaterVar;