promise \ callback => async \ await

fetch

   const fetch = () => {
        return new Promise((resolve, reject) => {
            this.validate('name')
                .then(result => {
                    return resolve(result.id)
                })
                .catch(reject)

        })
    }

   const fetch = async () => {
        const result = await this.validate('name')
        return result.id
    }