Add .js Extensions to Imports statements

[rkodev]

We need to evaluate whether to add .js extensions to import statements across all packages in this repository.

Verify the configuration of tsconfig. Depending on the options set, it can:

• Automatically add the missing .js extension or not.
• Automatically add index or not.

Additionally, define the hows and whys of this process.

[EricAtMSFT]

I noticed that the Kiota lib I generated (using V 1.27.0) there were quite a few imports statements pointing to .js files....that don't exist since the client generates .ts assets. I removed all then ".js" manually and the client built fine after that but it does seem like there's an issue here.

[baywet]

@EricAtMSFT the reason why kiota generates typescript code with a .js extension for all relative imports is because it's required by the ESM specification and its implementation through node/TypeScript. Let us know if you have any additional comments or questions.

[pzimmerman-bmi]

@EricAtMSFT the reason why kiota generates typescript code with a .js extension for all relative imports is because it's required by the ESM specification and its implementation through node/TypeScript. Let us know if you have any additional comments or questions.

Hmm, this is the first I've learned of that. I haven't seen any library adhere to that standard. So in typescript, its invalid to use 'path/to/code'? Seems like it defeats the purpose of typescript to append ".js" to the end of every import.