I'm struggling to get over an error on TS.

I define value (below in the code) according 2 interfaces that I created (WalletInformationsEdit and UserInformationsEdit)

The problem that I encounter is at the line right after the DB query, value[field] is underlined saying :

Element implicitly has an 'any' type because expression of type 'string' can't be used to index type 'WalletInformationsEdit | UserInformationsEdit'.

  No index signature with a parameter of type 'string' was found on type 'WalletInformationsEdit | UserInformationsEdit'.

I have find 2 solutions to avoid this error message, but I am not ok because they make my code less protected:

1/ In TS config, if I take off "strict": true and "noImplicitAny": true -> working

2/ if I define value with "any" type, -> working

But both are not worth it, I suppose.

Do you have any recommandation to handle this case ?

Thanks in advance,

Paul

    public async update(value: WalletInformationsEdit | UserInformationsEdit): Promise<any> {



        try {



            // saving id before elem treatment

            const keepId = value.id

            delete value.id



            let filterFields = []

            for (let elem of Object.keys(value)) {

                filterFields.push(elem)

            }



            let i = 0;

            let updateList = [];

            for (const field of filterFields) {

              updateList.push(`"${field}" = $${++i}`);

            }



            const preparedQuery = {

              text: `UPDATE "${this.constructor.name.toLowerCase()}" SET

                    ${updateList.join()}

                  WHERE id = $${++i}

                  RETURNING *

              `,

              values: [...filterFields.map((field) => value[field]), keepId],

            };            



            const result = await db.query(preparedQuery);            



            return result.rows[0]



        } catch (error) {

            throw new Error(error.message)



        }





    }

WalletInformationsEdit and UserInformationsEdit interfaces

export interface UserInformationsEdit {

    id?: number,

    email?: string,

    password?: string,

    country?: string

}



export interface WalletInformationsEdit {

    id?: number,

    name?: string,

    is_default?: boolean,

}