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Do arrow functions save more memory than normal functions? at least on the ESP8266??? @Gordon

thank you that worked perfectly.

Every time I try to use the espruino tools I get the error below on windows. But using the Espruino web IDE native it connects without a problem.

Any suggestions?

$ espruino --list

Espruino Command-line Tool 0.1.29

C:\Users\medma\AppData\Roaming\npm\node_modules\espruino\node_modules\usb\usb.js:34

    this.__open()
         ^

Error: LIBUSB_ERROR_NOT_SUPPORTED

at Device.usb.Device.open (C:\Users\medma\AppData\Roaming\npm\node_modules\espruino\node_modules\usb\usb.js:34:7)
at BluetoothHciSocket.bindUser (C:\Users\medma\AppData\Roaming\npm\node_modules\espruino\node_modules\@abandonware\bluetooth-hci-socket\lib\usb.js:90:19)    
at BluetoothHciSocket.bindRaw (C:\Users\medma\AppData\Roaming\npm\node_modules\espruino\node_modules\@abandonware\bluetooth-hci-socket\lib\usb.js:43:8)      
at Hci.init (C:\Users\medma\AppData\Roaming\npm\node_modules\espruino\node_modules\@abandonware\noble\lib\hci-socket\hci.js:101:35)
at NobleBindings.init (C:\Users\medma\AppData\Roaming\npm\node_modules\espruino\node_modules\@abandonware\noble\lib\hci-socket\bindings.js:82:13)
at Noble.<anonymous> (C:\Users\medma\AppData\Roaming\npm\node_modules\espruino\node_modules\@abandonware\noble\lib\noble.js:57:24)
at process._tickCallback (internal/process/next_tick.js:61:11)
at Function.Module.runMain (internal/modules/cjs/loader.js:745:11)
at startup (internal/bootstrap/node.js:282:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:743:3)

Thank you

If my wifi config saved then I don't need to try to do wifi.connect()?

but how do I know when to skip this wifi.connect()?