feat: Initial devtools support (#1125)

test-dts/defineComponent.test-d.tsx

@@ -622,7 +622,7 @@ describe('emits', () => {
   defineComponent({
     emits: {
       click: (n: number) => typeof n === 'number',
-      input: (b: string) => null
+      input: (b: string) => b.length > 1
     },
     setup(props, { emit }) {
       emit('click', 1)

test-dts/ref.test-d.ts

@@ -76,11 +76,13 @@ function bailType(arg: HTMLElement | Ref<HTMLElement>) {
   expectType<HTMLElement>(unref(arg))
 
   // ref inner type should be unwrapped
+  // eslint-disable-next-line no-restricted-globals
   const nestedRef = ref({ foo: ref(document.createElement('DIV')) })
 
   expectType<Ref<{ foo: HTMLElement }>>(nestedRef)
   expectType<{ foo: HTMLElement }>(nestedRef.value)
 }
+// eslint-disable-next-line no-restricted-globals
 const el = document.createElement('DIV')
 bailType(el)