feat: flag configs clear up

__tests__/client.test.ts

@@ -362,3 +362,16 @@ test('configure httpClient, success', async () => {
   const v = client.variant('flag');
   expect(v).toEqual({ value: 'key' });
 });
+
+test('ExperimentClient.clear, clear all variants in the cache and storage', async () => {
+  const client = new ExperimentClient(API_KEY, {
+    httpClient: new TestHttpClient(),
+  });
+  await client.fetch(testUser);
+  const variant = client.variant(serverKey);
+  expect(variant).toEqual(serverVariant);
+
+  client.clear();
+  var clearedVariants = client.all();
+  expect(clearedVariants).toEqual({});
+});

src/experimentClient.ts

@@ -172,6 +172,14 @@ export class ExperimentClient implements Client {
     return { ...this.secondaryVariants(), ...this.sourceVariants() };
   }
 
+  /**
+   * Clear all variants in the cache and storage.
+   */
+  public clear() {
+    this.storage.clear();
+    this.storage.save();
+  }
+
   /**
    * Get a copy of the internal {@link ExperimentUser} object if it is set.
    *

src/stubClient.ts

@@ -35,5 +35,7 @@ export class StubExperimentClient implements Client {
     return {};
   }
 
+  public clear() {}
+
   public exposure(_key: string): void {}
 }