How to combine all meshes in an array (JAVASCRIPT)

I'm making a terrain generation script. I have the perlin noise generation working and what I'm doing now is instantiating lots of "chunks" and putting them into an array. What I have at the moment is lots of planes next to each other, but they aren't joined together. I need a way to use Mesh.CombineMeshes or any other way to combine all meshes in the array.

If you need to see my script, type it in the comments and I'll post it here! Also, if you need a screenshot or something just ask.