Validate in schema options is not properly typed

[viganll]

Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the bug has not already been reported

Mongoose version

8.3.1

Node.js version

18.17.1

MongoDB server version

6

Typescript version (if applicable)

4.8

Description

The validate config is not properly typed in schema options e.g

 isActive: {
            type: Boolean,
            default: false,
            validate: {
                validator(v) {
                   // this & v are any
                    return !v || this.name === "super admin"
                },
            },
        },

Steps to Reproduce

import { Schema } from "mongoose";

interface User {
  name: string;
  isActive: boolean;
}

const userSchema = new Schema<User>({
  name: {
    type: String,
    required: [true, "Name on card is required"],
  },
  isActive: {
    type: Boolean,
    default: false,
    validate: {
      validator(v) {
        return !v || this.name === "super admin";
      },
    },
  },
});

Expected Behavior

I would expect that this is properly typed.

[vkarpov15]

Re opening based on comments in #14720

[akshdev1998]

import { Schema } from "mongoose";

interface User {
  name: string;
  isActive: boolean;
}

const userSchema = new Schema<User>({
  name: {
    type: String,
    required: [true, "Name on card is required"],
  },
  isActive: {
    type: Boolean,
    default: false,
    validate: {
      validator(this: User, v: boolean) {
        // Now `this` is properly typed as `User`
        return !v || this.name === "super admin";
      },
    },
  },
});

TRY THESE ONE!