• Well, the blue led on ESP8266 board works different as you figured out by yourself.

    you can use this snippet to revert this

    var LED1 = { 
            set : ()=> {D2.reset();},
            reset : ()=>{ D2.set();} 
    };
    
  • var LED1 = { 
        set : ()=> {D2.reset();},
        reset : ()=>{ D2.set();} 
    };
    
    digitalWrite(LED1, true);
    
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    >Uncaught Error: Invalid pin!
     at line 7 col 24
    digitalWrite(LED1, true);
    
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