listHandlers()

调用签名

¥Call signature

worker.listHandlers()

此方法不接受任何参数，并返回 worker 对象上存在的所有处理程序的列表。它主要用于调试和自省目的。

¥This method accepts no arguments and returns a list of all handlers present on the worker object. It’s primarily designed for debugging and introspection purposes.

过滤处理程序

¥Filtering handlers

你可以通过对 .listHandlers() 函数调用的结果实现 instanceof 检查，将处理程序过滤为特定类型（例如，仅 HTTP 或仅 WebSocket 处理程序）。

¥You can filter out the handlers to a particular type (e.g. only HTTP or only WebSocket handlers) by implementing the instanceof check on the result of the .listHandlers() function call.

例如，以下是仅记录 HTTP 处理程序的方法：

¥For example, here’s how to log only HTTP handlers:

import { RequestHandler } from 'msw'
 
const handlers = worker.listHandlers().filter((handler) => {
  // This will include both `http.*` and `graphql.*` handlers
  // while omitting and `ws.*` handlers.
  return handler instanceof RequestHandler
})
 
console.log(handlers)

分别地，handler instanceof WebSocketHandler 仅返回 ws 处理程序。

¥Respectively, handler instanceof WebSocketHandler returns only ws handlers.

• RequestHandler