小编Ved*_*ede的帖子

我是打字稿新手，我尝试通过运行命令将打字稿文件转换为javascript文件tsc filename.ts。但它显示错误。

C:\Program Files (x86)\Nodist\bin\node_modules\typescript\lib\tsc.js:93
  for (let i = startIndex ?? 0; i < array.length; i++) {
                           ^

SyntaxError: Unexpected token ?
    at Module._compile (internal/modules/cjs/loader.js:749:23)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:816:10)
    at Module.load (internal/modules/cjs/loader.js:672:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:612:12)
    at Function.Module._load (internal/modules/cjs/loader.js:604:3)
    at Module.require (internal/modules/cjs/loader.js:711:19)
    at require (internal/modules/cjs/helpers.js:14:16)
    at Object.<anonymous> (C:\Program Files (x86)\Nodist\bin\node_modules\typescript\bin\tsc:2:1)
    at Module._compile (internal/modules/cjs/loader.js:805:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:816:10)

我尝试将节点安装到最新版本。