No Resistances attempt 2

onFoeTryMove: function (target, source, effect) {
    if ((source.side === this.effectData.target.side || effect.id === 'perishsong') && effect.target !== 'foeSide') {
        onEffectiveness: function (typeMod) {
            if (move.typeMod < 0) {
                return 0;
            }
        },
    },
},