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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
Maybe try a webserver on your local PC? It can then directly serve up the files you're developing in whatever IDE you want - so no upload/copy needed.
SSDs may very occasionally fail and lose everything, but so do hard disks - I believe far more often than SSDs. Even with RAID computers get stolen, dropped, accidentally formatted, etc too - you need backups regardless of the storage you're using.