als-statistics/lib/column/add-stats.js

Modular JS statistics toolkit for Node.js and the browser: descriptive stats, correlations (Pearson/Spearman/Kendall), t-tests & ANOVA (Student/Welch), reliability (Cronbach’s alpha), regression (linear/logistic), clustering (DBSCAN/HDBSCAN), and table/co

import Stats from "../descriptive/index.js";
import { Cache } from "./cache.js";

export function addStats(Column) {
   const excludes = new Set(["length", "name", "prototype"])
   Object.getOwnPropertyNames(Stats).forEach(method => {
      if (typeof Stats[method] !== 'function' || excludes.has(method)) return;
      if (Stats[method].length === 1) Object.defineProperty(Column.prototype, method, {
         get() { return this.$(method, Stats[method]) }, configurable: true, enumerable: false
      })
      else Object.defineProperty(Column.prototype, method, {
         value: function (...params) {
            return this.$(Cache.key(method, ...params), () => Stats[method](this, ...params))
         }, writable: true, configurable: true, enumerable: false
      })
   })
}