Windows had an msdos assembler preinstalled, last time I checked, which was before vista. Now the 16bit support was removed, but edge comes with a javascript engine, right?
With asm I referred to the OP, the javascript engine bit could relate to the chrome developer tools a chromebook should sport or to sites like jsfiddle, codepen, the msp430 challenge at microcorruption.com, etc. etc. I tried to concur with you, basically.