how to await when using class-transformer in nestjs?

Question

i'm new to nestjs.

i'm trying to transform plaintext password to crypted string but i'm receiving it as "Promise { }"

how can I await here?

import { Transform } from 'class-transformer';
import * as bcrypt from "bcrypt";


const hashPass = async user => {
    return await bcrypt.hash(user.password, 7);
      }
export class UserDto {

    readonly name: string;
    readonly phone: number;
    readonly username: string;
    readonly email: string;
 
    @Transform( hashPass, {toClassOnly: true})
    readonly  password: string;
}

Answer 1

You can't as of now, since class-transformer doesn't support it.

The transformer decorator expects a synchronous transform function.

As a workaround, you can try the non-promise version of bcrypt:

bcrypt.hashSync(user.password, 7);