const weekDays = ['dimanche', 'lundi', 'mardi', 'mercredi', 'jeudi', 'vendredi', 'samedi']

// eslint-disable-next-line @typescript-eslint/no-unused-vars
interface Date {
    getWeekDay(): string,
    toSQLDate(): string,
}

Date.prototype.toSQLDate = function (): string {
    return (new Date(this)).toISOString().split('T')[0]
}

Date.prototype.getWeekDay = function () {
    return weekDays[this.getDay()]
}