@numio/bigmath/src/mean/utils.js

@numio/bigmath is an arbitrary-precision arithmetic library. It can be used for basic operations with decimal numbers (integers and float)

import { PipeInner } from "../pipe/utils.js";
import { tryBigInt } from "../shared/utils.js";
export const meanInner = (array) => {
    return new PipeInner().div([
        new PipeInner().add(array).bi,
        [tryBigInt(array.length), 0]
    ]).bi;
};