断言函数 2021.1.13 2023.2.28 前端/typescript 2 1 分钟https://jkchao.github.io/typescript-book-chinese/new/typescript-3.7.html#%E6%96%AD%E8%A8%80%E5%87%BD%E6%95%B0https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#assertion-functions作者:王书硕链接:https://wss.cool/posts/前端/typescript/assertfunction/许可:CC BY-NC-SA 4.0