var uf = File.open('main_.js','w')
set_errno            spiffs error: -10001
null
smartjs 26344/876$ uf.write('\x70\x72\x69\x6e\x74\x28\x22\x52\x75\x6e\x6e\x69\x6e\x67\x20\x20\x30\x2e\x32\x22\x29\x3b\x0d\x0a\x76\x61\x72\x20\x66\x77\x50\x69')
Exec error: {"message":"value is not a function"}
Exec error: {"message":"value is not a function"}
smartjs 26344/876$ uf.write('\x6e\x20\x3d\x20\x34\x3b\x0d\x0a\x76\x61\x72\x20\x62\x77\x50\x69\x6e\x20\x3d\x20\x35\x3b\x0d\x0a\x76\x61\x72\x20\x62\x75\x7a\x7a')
Exec error: {"message":"value is not a function"}
Exec error: {"message":"value is not a function"}
smartjs 26344/876$ uf.write('\x50\x69\x6e\x20\x3d\x20\x31\x35\x3b\x0d\x0a')
Exec error: {"message":"value is not a function"}
Exec error: {"message":"value is not a function"}
smartjs 26344/876$ uf.close()
Exec error: {"message":"value is not a function"}
Exec error: {"message":"value is not a function"}
smartjs 26344/876$