Definitelytyped: @types/mongodb upgrade minimum TypeScript version to v3 in order to fix TypeScript 2 hacks in the codebase

[HosseinAgha]

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  • Authors: @CaselIT @mrcrane
  
  

We are introducing many hacks and workarounds to support complex TypeScript types. These hacks will be no longer needed if we upgrade minimum required TS version to TypeScript v3. For example we've defined Omit using TS 2.7 supported types or we had to use dirty hacks that could easily be avoided using TS 3.0 unknown type. Please take a look at @mrcrane's comment.

As upgrading the minimum TS version for a popular package like mongodb is not easy (requires upgrading the min TS version of dependents and dependents of dependents so on! and then approval of maintainers of those packages) I'm creating this issue as a tracking point for this task.

[CaselIT]

Thanks for creating this issue. I agree that we should update the minimum version of typescript.

Can you also tag the authors of the dependent packages so we have also their feedback?

[HosseinAgha]

I think finding the authors takes the same amount of time as creating the upgrade PR. Plus the repo bot mentions them in the PR when we change their min TS version. I'd be happy to contribute but I'm currently very busy. 🙏

[CaselIT]

@HosseinAgha What is the minimum version that is required to fix the latest work around? 3.0?

[mrcrane]

Version 3.0 would be required to use unknown for the fix that is outlined in #38687

[mrcrane]

This was merged in #38789

[jahir9991]

i solved this problem with "typescript": "3.3.3" but @latest occurred another issues

[HosseinAgha]

@jahir9991 This is the repository for @types/mongodb package that you install to get TypeScript typings and this is an internal issue with the types. What problem are you talking about?