feat: add method to reset the client

src/client/client.ts

@@ -46,6 +46,13 @@ export default class Client extends BaseClient {
     }
   }
 
+  public reset() {
+    this._latestPeriod = 0;
+    this.latestCommittee = undefined;
+    this.booted = false;
+    this.store.clear();
+  }
+
   public async syncFromCheckpoint(checkpoint: LightClientUpdate) {
     this._latestPeriod = computeSyncPeriodAtSlot(
       checkpoint.attestedHeader.beacon.slot,

src/interfaces.ts

@@ -17,6 +17,7 @@ export interface IStore extends EventEmitter {
   addUpdate(period: number, update: LightClientUpdate): void;
   getUpdate(period: number): Uint8Array;
   hasUpdate(period: number): boolean;
+  clear(): void;
 }
 
 export interface IVerifyingProvider {

src/store.ts

@@ -21,6 +21,10 @@ export default class Store extends EventEmitter implements IStore {
     this.store.options.stdTTL = 0;
   }
 
+  clear(): void {
+    this.store.flushAll();
+  }
+
   addUpdate(period: number, update: LightClientUpdate) {
     try {
       const serialized = capella.ssz.LightClientUpdate.serialize(update);