@ldrick/trade-indicators/dist/averages/ma.js

Trade Indicators

import { apply as AP, either as E, function as F, readonlyNonEmptyArray as RNEA } from 'fp-ts/lib';
import * as arr from '../utils/array.js';
import * as num from '../utils/number.js';
const calculation = (values, period, cb) => F.pipe(RNEA.range(0, values.length - period), RNEA.traverse(E.Applicative)((r) => F.pipe(values.slice(r, period + r), arr.validateRequiredSize(period), E.map(cb))));
/**
 * Moving Average
 *
 * @internal
 */
export const ma = (values, period, cb) => F.pipe(AP.sequenceS(E.Applicative)({
    periodV: num.validatePositiveInteger(period),
    valuesV: arr.validateRequiredSize(period)(values),
}), E.bind('valuesB', ({ valuesV }) => arr.toBig(valuesV)), E.chain(({ valuesB, periodV }) => calculation(valuesB, periodV, cb)), E.map(arr.toNumber));