@numio/bigmath/src/IQR/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 { quartileInner } from "../quartile/utils.js";
export const IQRInner = (array) => {
    if (array.length < 3) {
        throw Error("To calculate IQR you need at least 3 elements");
    }
    const { Q1, Q3 } = quartileInner(array);
    const { bi: sub } = new PipeInner().sub([Q3, Q1]);
    return sub;
};