版本
    "mitt": "^3.0.0",
    "save": "^2.4.0",
    "vue": "^3.0.0"

错误如下
Failed to compile.

src/components/ValidateForm.vue:37:5
TS2769: No overload matches this call.
  Overload 1 of 2, '(type: "*", handler: WildcardHandler<Record<EventType, unknown>>): void', gave the following error.
    Argument of type '"form-item-created"' is not assignable to parameter of type '"*"'.
  Overload 2 of 2, '(type: "form-item-created", handler: Handler<unknown>): void', gave the following error.
    Argument of type '(test: string) => void' is not assignable to parameter of type 'Handler<unknown>'.
      Types of parameters 'test' and 'event' are incompatible.
        Type 'unknown' is not assignable to type 'string'.
    35 |     */
    36 |
  > 37 |     emitter.on('form-item-created', callback)
       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    38 |     // emitter.on('form-item-created', e => console.log('form-item-created', e))
    39 |     onUnmounted(() => {
    40 |       emitter.off('form-item-created', e => console.log('form-item-created', e))


部分代码
import mitt from 'mitt'

type ValidateFunc = () => boolean
export const emitter = mitt()
export default defineComponent({
  name: 'ValidateForm',
  emits: ['form-submit'],
  setup (props, context) {
    const submitForm = () => {
      const result = funcArr.map(func => func()).every(result => result)
      context.emit('form-submit', result)
    }
    const callback = (test: string) => {
      console.log(test)
    }
    
    emitter.on('form-item-created', callback)
    // emitter.on('form-item-created', e => console.log('form-item-created', e))
    onUnmounted(() => {
      emitter.off('form-item-created', e => console.log('form-item-created', e))
    })


emitter.on  调用自己写的handler:  callback 编译出错，如果用官网给的（比如注掉的代码）
就可以运行
--
FROM 45.51.104.*