Item 65: Put TypeScript and @types in devDependencies

要点

• Understand the difference between dependencies and devDependencies in package.json.
• Put TypeScript in your project's devDependencies. Don't install TypeScript system-wide.
• Put @types dependencies in devDependencies, not dependencies.
• 理解 package.json 中 dependencies 和 devDependencies 的区别。
• 将 TypeScript 放入项目的 devDependencies 中，不要全局安装 TypeScript。
• 将 @types 依赖放在 devDependencies 中，而不是 dependencies 中。