How to set default value with typescript

Do you want to request a feature or report a bug? It’s a question or probably a feature request.

What is the current behavior? Currently, I’ve a schema where date is default to Date.now. So it’ll never be undefined. But when I’m defining its interface if I use,

date: number;

Then when I’m saving a doc it always shows I’m missing date and if I use

date?:number

then when working with this model it shows date is possibly undefined. Currently, I’m using

// in interface
date?: number;

// when working with model
myModel.date as number

as a workaround, but what’s the appropriate way to do this? If the current behavior is a bug, please provide the steps to reproduce.

What is the expected behavior? There should be a way to work with default values.

What are the versions of Node.js, Mongoose and MongoDB you are using? Note that “latest” is not a version. node v16.13.0 mongoose v6.1.4 mongodb v4.2.2 typescript v4.5.4

[vkarpov15]

I took a closer look and any[] is correct for Types.Array.push(). Because of Mongoose type casting and change tracking, the below are perfectly valid:

interface User {
  oids: Types.Array<Types.ObjectId>[];
}

const user = new UserDoc({});

user.oids.push('000000000000000000000000'); // Perfectly fine to push a string, Mongoose casts it to ObjectId if possible
user.oids.push(user); // Perfectly fine to push a Document, Mongoose casts it to ObjectId

user.oids.push('fail'); // Push something invalid
user.oids[user.oids.length - 1] = new Types.ObjectId('000000000000000000000000'); // Overwrite the previous invalid oid, and now you can save

await user.save(); // Succeeds

[imranbarbhuiya]

yeah that makes sense. For pure array

Btw, Types.Array makes it any type, so ig that needs a fix.