I am new to typescript, I tried converting a typescript file to a javascript file by running the command tsc filename.ts. But it shows error.
C:Program Files (x86)Nodistbinnode_modulestypescriptlibtsc.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. (C:Program Files (x86)Nodistbinnode_modulestypescriptbintsc:2:1) at Module._compile (internal/modules/cjs/loader.js:805:30) at Object.Module._extensions..js (internal/modules/cjs/loader.js:816:10) I tried installing node to the latest version.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
I encountered the same problem using
TypeScript5.1.6 and Node 12.x versions.You get this problem because of this combination. I downgraded my
TypeScriptto 4.9.5 and it works fine for me.Please check the pictures below for reference:
https://www.typescriptlang.org /docs/handbook/release-notes/typescript-5-1.html