1 files changed, 9 insertions, 1 deletions
diff --git a/packages/taler-util/src/http-client/exchange.ts b/packages/taler-util/src/http-client/exchange.ts
index ea7f44cf9..0ff1a8874 100644
--- a/packages/taler-util/src/http-client/exchange.ts
+++ b/packages/taler-util/src/http-client/exchange.ts
@@ -33,7 +33,7 @@ import {
   codecForExchangeConfig,
   codecForExchangeKeys,
 } from "./types.js";
-import { addPaginationParams } from "./utils.js";
+import { CacheEvictor, addPaginationParams, nullEvictor } from "./utils.js";
 
 export type TalerExchangeResultByMethod<
   prop extends keyof TalerExchangeHttpClient,
@@ -42,17 +42,25 @@ export type TalerExchangeErrorsByMethod<
   prop extends keyof TalerExchangeHttpClient,
 > = FailCasesByMethod<TalerExchangeHttpClient, prop>;
 
+export enum TalerExchangeCacheEviction {
+  CREATE_DESCISION,
+}
+
+
 /**
  */
 export class TalerExchangeHttpClient {
   httpLib: HttpRequestLibrary;
   public readonly PROTOCOL_VERSION = "18:0:1";
+  cacheEvictor: CacheEvictor<TalerExchangeCacheEviction>;
 
   constructor(
     readonly baseUrl: string,
     httpClient?: HttpRequestLibrary,
+    cacheEvictor?: CacheEvictor<TalerExchangeCacheEviction>,
   ) {
     this.httpLib = httpClient ?? createPlatformHttpLib();
+    this.cacheEvictor = cacheEvictor ?? nullEvictor;
   }
 
   isCompatible(version: string): boolean {