//retrieve indicator module via accessor or alias
const LWMA = require('alphacate').LWMA;
const BB = require('alphacate').BollingerBands;

//do computation asynchronously
let run = async () => {
    try{
        //pass optional configuration object into the constructor
        let lwma = new LWMA( {periods: 4} );
        let bb = new BB( {periods: 4} );

        let data = [25.5, 26.75, 27.0, 26.5, 27.25];

        //set data series
        lwma.setValues( data );
        bb.setValues( data );

        //invoke calculate() to compute and retrieve result collection
        //an error will be throw if passed data serie or options are invalid
        let lwmaResultCollection = await lwma.calculate();
        let bbResultCollection = await bb.calculate();
        
        for(let i=0, len=lwmaCollection.length; i<len; i++){
            console.log(`Price: ${lwmaCollection[i].price}, LWMA: ${lwmaCollection[i].lwma}, BB Upper: ${bbCollection[i].upper}`);
        }

    }
    catch( err ){
        console.log(err.message);
    }
};

run();