fix(json-render-ui): clear action errors on retry

packages/json-render-ui/src/action-bridge.ts

@@ -15,7 +15,7 @@ export interface JsonRenderActionBridge {
   handlers: Record<string, (params?: Record<string, unknown>) => Promise<unknown>>
   /** Reactive per-action loading flags. */
   loading: Record<string, boolean>
-  /** The most recent action failure, or `null`. */
+  /** The most recent action failure, cleared when that action is retried. */
   error: { value: JsonRenderActionError | null }
 }
 
@@ -53,6 +53,8 @@ export function createActionBridge(
         error.value = { action, error: err }
         throw err
       }
+      if (error.value?.action === action)
+        error.value = null
       loading[action] = true
       try {
         return await rpc.call(action, params)

packages/json-render-ui/test/action-bridge.test.ts

@@ -49,4 +49,64 @@ describe('action bridge', () => {
     expect(call).not.toHaveBeenCalled()
     expect(bridge.error.value?.action).toBe('doThing')
   })
+
+  it('clears an action error when retrying and keeps it clear after success', async () => {
+    expect.assertions(6)
+    const retry = Promise.withResolvers<string>()
+    const call = vi.fn(async () => 'ok')
+      .mockRejectedValueOnce(new Error('first attempt failed'))
+      .mockReturnValueOnce(retry.promise)
+    const bridge = createActionBridge({ call })
+
+    await expect(bridge.handlers.refreshData()).rejects.toThrow('first attempt failed')
+    const pending = bridge.handlers.refreshData()
+    expect(bridge.loading.refreshData).toBe(true)
+    expect(bridge.error.value).toBeNull()
+    retry.resolve('ok')
+    await expect(pending).resolves.toBe('ok')
+    expect(bridge.error.value).toBeNull()
+    expect(bridge.loading.refreshData).toBe(false)
+  })
+
+  it('reports the new error when a retry fails', async () => {
+    expect.assertions(3)
+    const retryError = new Error('retry failed')
+    const call = vi.fn()
+      .mockRejectedValueOnce(new Error('first attempt failed'))
+      .mockRejectedValueOnce(retryError)
+    const bridge = createActionBridge({ call })
+
+    await expect(bridge.handlers.refreshData()).rejects.toThrow('first attempt failed')
+    await expect(bridge.handlers.refreshData()).rejects.toThrow('retry failed')
+    expect(bridge.error.value).toEqual({ action: 'refreshData', error: retryError })
+  })
+
+  it('preserves an error when another action succeeds', async () => {
+    expect.assertions(3)
+    const error = new Error('refresh failed')
+    const call = vi.fn(async () => 'ok').mockRejectedValueOnce(error)
+    const bridge = createActionBridge({ call })
+
+    await expect(bridge.handlers.refreshData()).rejects.toThrow('refresh failed')
+    await expect(bridge.handlers.saveData()).resolves.toBe('ok')
+    expect(bridge.error.value).toEqual({ action: 'refreshData', error })
+  })
+
+  it('preserves a failure received while a retry is pending', async () => {
+    expect.assertions(4)
+    const retry = Promise.withResolvers<string>()
+    const error = new Error('save failed')
+    const call = vi.fn(async () => 'ok')
+      .mockRejectedValueOnce(new Error('refresh failed'))
+      .mockReturnValueOnce(retry.promise)
+      .mockRejectedValueOnce(error)
+    const bridge = createActionBridge({ call })
+
+    await expect(bridge.handlers.refreshData()).rejects.toThrow('refresh failed')
+    const pending = bridge.handlers.refreshData()
+    await expect(bridge.handlers.saveData()).rejects.toThrow('save failed')
+    retry.resolve('ok')
+    await expect(pending).resolves.toBe('ok')
+    expect(bridge.error.value).toEqual({ action: 'saveData', error })
+  })
 })