filter search in a array with a wildcard string

Question

I have a array of objects.
hope you get the idea with this picture.

getCondition: function(type, processParam) {
    var filter;
    if(type == "description") {
        console.log("_dgnConditions",_dgnConditions);
        filter = _dgnConditions.filter((condition)=>condition.description == 'string' && item.indexOf(processParam) > -1);
    }
    return filter.length ? filter[0] : null;
},

Im trying to find string partials in this massive array using the above code, but I get no results.

partial example would be facial bones for instance (of the picture)

EDIT

filter = _dgnConditions.filter((condition)=>condition.description == condition.description.indexOf(processParam) > -1);

Answer 1

try:-

getCondition: function(type, processParam) {
    var filter;
    if(type == "description") {
        console.log("_dgnConditions",_dgnConditions);
        filter = _dgnConditions.filter((condition)=> typeof condition.description == 'string' && condition.description.indexOf(processParam) > -1);
    }
    return filter.length ? filter[0] : null;
},

as condition.description == 'string' will not check the type. and you are looking for the index of processParam inside the description.

not sure where item is coming from.