text: 
  #include "wiring_api.h"
  
  int LED_BUILTIN = 2;
  
  WASM_EXPORT
  void setup() {
    println("🤩 C++ is running!");
  
    // initialize digital pin LED_BUILTIN as an output.
    pinMode(LED_BUILTIN, OUTPUT);
  }
  
  // the loop function runs over and over again forever
  WASM_EXPORT
  void loop() {
    digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
    delay(100);                        // wait 100ms
    digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
    delay(900);                        // wait 900ms
  }
  