How to use the simple-statistics/src/extent function in simple-statistics

import {UndirectedGraph} from 'graphology';
import WebGLRenderer from '../src/renderers/webgl';
import circularLayout from 'graphology-layout/circular';
import {animateNodes} from '../src/animate.js';
import {scaleLinear} from 'd3-scale';
import extent from 'simple-statistics/src/extent';
import miserables from './resources/les-miserables.json';

const nodeSizeExtent = extent(miserables.nodes.map(n => n.size));
const xExtent = extent(miserables.nodes.map(n => n.x));
const yExtent = extent(miserables.nodes.map(n => n.y));

const nodeSizeScale = scaleLinear()
  .domain(nodeSizeExtent)
  .range([3, 15]);

const xScale = scaleLinear()
  .domain(xExtent)
  .range([0, 1]);

const yScale = scaleLinear()
  .domain(yExtent)
  .range([0, 1]);

const graph = new UndirectedGraph();

import {UndirectedGraph} from 'graphology';
import WebGLRenderer from '../src/renderers/webgl';
import circularLayout from 'graphology-layout/circular';
import {animateNodes} from '../src/animate.js';
import {scaleLinear} from 'd3-scale';
import extent from 'simple-statistics/src/extent';
import miserables from './resources/les-miserables.json';

const nodeSizeExtent = extent(miserables.nodes.map(n => n.size));
const xExtent = extent(miserables.nodes.map(n => n.x));
const yExtent = extent(miserables.nodes.map(n => n.y));

const nodeSizeScale = scaleLinear()
  .domain(nodeSizeExtent)
  .range([3, 15]);

const xScale = scaleLinear()
  .domain(xExtent)
  .range([0, 1]);

const yScale = scaleLinear()
  .domain(yExtent)
  .range([0, 1]);

const graph = new UndirectedGraph();

miserables.nodes.forEach((node, i) => {

import {UndirectedGraph} from 'graphology';
import WebGLRenderer from '../src/renderers/webgl';
import circularLayout from 'graphology-layout/circular';
import {animateNodes} from '../src/animate.js';
import {scaleLinear} from 'd3-scale';
import extent from 'simple-statistics/src/extent';
import miserables from './resources/les-miserables.json';

const nodeSizeExtent = extent(miserables.nodes.map(n => n.size));
const xExtent = extent(miserables.nodes.map(n => n.x));
const yExtent = extent(miserables.nodes.map(n => n.y));

const nodeSizeScale = scaleLinear()
  .domain(nodeSizeExtent)
  .range([3, 15]);

const xScale = scaleLinear()
  .domain(xExtent)
  .range([0, 1]);

const yScale = scaleLinear()
  .domain(yExtent)
  .range([0, 1]);

const graph = new UndirectedGraph();