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

Trade Indicators

import { Big } from 'big.js';
import { function as F, readonlyNonEmptyArray as RNEA } from 'fp-ts';
/**
 * Weighted Arithmetic Mean.
 *
 * @internal
 */
export const wamean = (values) => {
    const dividend = F.pipe(values, RNEA.reduceWithIndex(new Big(0), (index, reduced, value) => reduced.add(value.mul(index + 1))));
    const divisor = F.pipe(values, RNEA.reduceWithIndex(new Big(0), (index, reduced) => reduced.add(index + 1)));
    return dividend.div(divisor);
};