Mongoose slows down performance of VSCode (TSServer) by a lot

Do you want to request a feature or report a bug?

bug

What is the current behavior?

It slows down vscode by a lot, even with small projects. I have a very small project, with like 2 small schemas, and the 2 other files, containing on average 160 lines of code, and vscode slows down a lot as soon as I install mongoose. This does not happen when I install most other libraries (haven’t tested them all lmao). If I uninstall mongoose, it comes back and works perfectly normal. To clarify “slowing down” means that typescript language server needs 3-5 seconds to realise that I’m importing somethign invalid, and just vscode in general to realise I’m importing something that’s never used takes around 2-4 seconds. Usually it happens in under a second so like… you know… And it’s not like vscode is taking a lot of ram/cpu either, it just grows slow. Btw I think this is a mongoose issue, since it happens with no other library, its a special case here Reloading typescript server or project doesn’t help

If the current behavior is a bug, please provide the steps to reproduce.

Have vscode to edit your code Install mongoose on your current project (npm i mongoose

My tsconfig.json:

{
    "compilerOptions": {
        "allowJs": true,
        "moduleResolution": "Node",
        "esModuleInterop": true,
        "target": "ES6",
        "resolveJsonModule": true,
        "outDir": "./dist",
        "checkJs": true,
        "module": "CommonJS",
        "lib": ["ESNext"]
    },
    "include": ["src"]
}

What is the expected behavior?

It to not be like this, lmao.

What are the versions of Node.js, Mongoose and MongoDB you are using? Note that “latest” is not a version.

Node: v16.2.0 Mongoose: 5.12.13 Linux: 5.12.7-arch1-1

[Thisura98]

Decided to give it one more shot by taking into consideration feedback by @TigranAvagyan18. And I got it to work!

Commands:

npm i mongoose@5.10.19 --save
npm i @types/mongoose@5.10.5 --save

Summary:

• Downgrade to last version before Mongoose’s own TS types
• Install DefinitelyTyped’s Mongoose types.

My existing code worked with these versions without issues. Code completion performance is also back! It feels so good to have the snappy completion back.

As a side note, Mongoose introduced their own types in version 5.11.0 according to this. 5.10.19 was the last version released before that according to this

I will test some more tonight to see if my current code was affected by this downgrade and update this post if I find any.

[nikolaninkovninkov]

This really needs a fix… Programming is not possible like this.