moddedItemDropRandomizer.js

var seed=99998;
function getItems(){
    var output=[];
    var items=item.typeList;
    for(var i=0;i<items.length;i++){
        output.push(items[i]);
    }
    output.sort();
    return output;
}
function getNewRandomItem(i){
    var index=item.list.indexOf(i);
    var randomizedList=getItems();
    return randomizedList[(seed+index)%randomizedList.length];
}
events.listen("block.break",function(event){
    var ent=event.world.createEntity("item");
    ent.item=getNewRandomItem(event.block.item);
    ent.setPosition(event.block.x+0.5,event.block.y+0.5,event.block.z+0.5);
    ent.spawn();
    event.block.set("minecraft:air");
    event.cancel();
});
events.listen("entity.drops",function(event){
    var ent;
    var itemmm;
    for(var i=0;i<event.drops.length;i++){
        ent=event.world.createEntity("item");
        ent.item=getNewRandomItem(event.drops[i].item);
        ent.setPosition(event.entity.x,event.entity.y,event.entity.z);
        ent.spawn();
    }
    event.cancel();
});