VSCode 插件开发 extension.js 感觉没有调用

Question

场景

extension.js

import * as vscode from 'vscode'

export function activate(context) {
  console.log('active extension')
}

export function deactivate() {}

部分 package.json

{
  "main": "./extension.js",
  "activationEvents": [],
  "categories": [
    "Extension Packs"
  ],
  "devDependencies": {
    "@types/vscode": "^1.36.0",
    "vscode": "^1.1.35"
  }
}

使用 F5 启动后却始终不见控制台打印任何内容