How to get an unit？

i read you documentation --> unit.isFriendly() so I wrote this:

let unit = warrior.feel().getUnit();
    if(unit.isFriendly()){
      warrior.rescue();
    }

but the terminal show: Invalid submitted code: Cannot read property ‘isFriendly’ of undefined

My English is not good , can you tell me how to get the unit. thanks

[r-i-c-h]

I think, essentially - The docs of the ‘APIs’ provide no clear idea of these two relationships to the player/warrior const unitAPIObject = warrior.feel().getUnit();
const spaceAPIObject = warrior.feel();

It would be even clearer to just put in the instructions that const space = warrior.feel();
const unit = space.getUnit();

With the inability to log anything to the terminal, it is almost impossible to intuit this.

[olistic]

Hello @383366204! warrior.feel() returns a space, so it’s correct calling .getUnit() on it. However, not all spaces have units on them. You should check if there is a unit before trying to call methods like .isFriendly() on them.

const unit = warrior.feel().getUnit();
if (unit && unit.isFriendly()) {
  warrior.rescue();
}

// OR:

const space = warrior.feel();
if (space.isUnit() && space.getUnit().isFriendly()) {
  warrior.rescue();
}

P.S.: When reporting a problem, please try to follow the issue template and provide the data requested in it.