一名开发者探索了向TypeScript编译器引入Go语言defer机制的技术可行性[1]。defer语句在Go中用于延迟函数执行直到其所在函数完成[1]，而TypeScript目前采用try/finally结构来实现类似功能[1]。作者通过实现抽象语法树（AST）转换，将延迟执行的函数调用转化为等价的JavaScript运行时代码[1]。
这一实现方案需要创建栈结构来存储延迟调用，并通过finally块按相反顺序执行这些调用[1]。在具体转换过程中，还需要处理错误聚合、异步清理以及多个错误的报告等复杂场景[1]。尽管从技术角度可行，作者最终认为defer不应被添加到TypeScript中，转而建议采用ECMAScript Explicit Resource Management提案中的using语法作为替代方案[1]。
An author has explored the feasibility of implementing Go's defer statement within the TypeScript compiler through AST transformation techniques.[1] The defer mechanism in Go postpones function execution until the surrounding function completes, a capability that TypeScript currently addresses using try/finally blocks.[1]
The proposed implementation would require creating a stack to store deferred calls and executing them in reverse order through finally blocks.[1] However, this approach introduces additional complexity in handling error aggregation, asynchronous cleanup, and reporting multiple errors.[1] After examining the technical viability of such an addition, the author concluded that despite being implementable, defer should not be added to TypeScript.[1] Instead, the author recommends adopting the using syntax from the ECMAScript Explicit Resource Management proposal as a more appropriate alternative.[1]