export const haveSelectedGas = (station, gas) => { if (!station.prices || station.prices.length === 0 ) { return false; } for (let i = 0 ; i < station.prices.length ; i +=1 ){ if (station.prices[i].gasType === gas ) { return true; } } return false; } export const lowerCaseString = (string) => { if ( !string){ return ''; } return string.toLowerCase(); } export const capitalizeFirstLetter = (string) => { if ( !string){ return ''; } return string.charAt(0).toUpperCase() + lowerCaseString(string.slice(1)); }