let tc = await import('/lib/finance/technical/v1.0.0/channels.mjs');

let prices = [{price:100},{price:101},{price:102},{price:103},{price:104},{price:105},];

let top = tc.envelop(prices.map(p=>p.price), 3, 0.05, true);
let bottom = tc.envelop(prices.map(p=>p.price), 3, 0.05, false);