Javascript to create vector from image and save as eps

Hi,

I started writing a script which open all images in a folder and i need to turn those into vectors.

How do i write the following in JavaScript:

1. Open the JPG file
2. Select the image layer/object
3. Create a vector from the image using the Image Trace for high fidelity 
4. Reduce the new vector objec size by %50.
5. save as eps

any help with any of the stages would be very helpful.

thank you