feat: added snippets for defineEmits, defineProps, withDefaults macros

Adds TypeScript snippets for Vue 3 Composition API macros:
- v3emits-ts: defineEmits with TypeScript interface
- v3props-ts: defineProps with TypeScript interface
- v3withdefaults-ts: withDefaults with TypeScript interface

Based on PR sdras#132 from mpchelnikov

Author: long36708

README.md

@@ -125,6 +125,9 @@ These snippets are meant to provide a base scaffold for your single file compone
 | `v3watch-array`     | Vue Composition API - watch as array                  |
 | `v3watcheffect`     | Vue Composition API - watchEffect                     |
 | `v3ref`             | Vue Ref                                               |
+| `v3emits-ts`        | Vue Composition API - defineEmits macros with TS      |
+| `v3props-ts`        | Vue Composition API - defineProps macros with TS      |
+| `v3withdefaults-ts` | Vue Composition API - withDefaults macros with TS      |
 | `v3onmounted`       | Lifecycle hook - onMounted                            |
 | `v3onbeforemount`   | Lifecycle hook - onBeforeMount                        |
 | `v3onbeforeupdate`  | Lifecycle hook - onBeforeUpdate                       |

snippets/vue-script.json

@@ -338,6 +338,41 @@
     "body": ["const ${1:name} = ref(${2:initialValue})"],
     "description": "Vue Ref"
   },
+  "Vue Composition API - defineEmits": {
+    "prefix": "v3emits-ts",
+    "body": [
+      "interface IEmits {",
+      "\t(e: '${1:name}'): ${2},",
+      "}",
+      "",
+      "const emit = defineEmits<IEmits>()"
+    ],
+    "description": "Vue Composition api - defineEmits with Typescript"
+  },
+  "Vue Composition API - defineProps": {
+    "prefix": "v3props-ts",
+    "body": [
+      "interface IProps {",
+      "\t${1:name}: ${2},",
+      "}",
+      "",
+      "const prop = defineProps<IProps>()"
+    ],
+    "description": "Vue Composition api - defineProps with Typescript"
+  },
+  "Vue Composition API - withDefaults": {
+    "prefix": "v3withdefaults-ts",
+    "body": [
+      "interface IProps {",
+      "\t${1:name}: ${2},",
+      "}",
+      "",
+      "const props = withDefaults(defineProps<IProps>(), {",
+      "\t${1:name}: ${3},",
+      "})"
+    ],
+    "description": "Vue Composition api - withDefaults props with Typescript"
+  },
   "Vue Lifecycle Hooks - onMounted": {
     "prefix": "v3onmounted",
     "body": ["onMounted(() => {${1}})"],