expsoing this.advice in a gekko strat

example.js

// option 1:
const otherFunction = (candle, advice) => {
  // your other function
  // example:
  if(something) {
    advice('long');
  }
}
start.check = (candle) => {
  // whenever you call otherFunction simply pass the advice function
  otherFunction(candle, this.advice)
}


// -------


// option 2:
const otherFunction = () => {
  // your other function
}

strat.init = function() {
  this.otherFunction = otherFunction.bind(this);

  // and now use this.otherFunction
  // it has access to this.advice
}


// ------


// option 3:
strat.init = function() {
  this.otherFunction = () => {
    // your other function
  }
}

strat.check = function() {
  this.otherFunction();
}