[Bug]: Outputting an array via code node produces a render error for the node (and I'm pretty sure tanks the performance)

[andris1]

What happened?

I have this code node that takes arr1 like ['a', 'b'] and arr2 like [['1', '2', '3', '4', '5'], ['7','8','9','10','11']] and produces arr3 like [[a,1][a,2][a,3][a,4][a,5],[b,7],[b,8],[b,9],[b,10],[b,11]].

The code node works, but it doesn't render the output (shows a rendering error).

And I'm pretty sure is the cause of a rendering-related performance drop for that graph (can barely click & drag the graph).

The code for the code node:

for(let i = 0; i < inputs.arr1.value.length; i++) {
    for(let j = 0; j < inputs.arr2.value[i].length; j++) {
        arr3.push([inputs.arr1.value[i], inputs.arr2.value[i][j]])
    }
}
return {
    arr3: {
        type: 'string[]',
        value: arr3
    }
};

What was the expected functionality?

Expected no rendering error or performance impact.

Describe your environment

Win11. Browser mode.

Relevant log output

No response

Relevant screenshots

No response

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[abrenneke]

It's expecting you to output a string[], so it's trying to render a list of strings, but it's actually a string[][] so that's why the rendering error is happening

[andris1]

omg :/ 🤦 ; that is true