Laravel undefined uPlot library

I’m trying to use the library uPlot into my view. But I’m getting an error of Uncaught ReferenceError: uPlot is not defined it seems that it can’t find the uPlot library but this library is already loaded in the bootstrap as shown below

// resources/js/bootstrap.js

window._ = require('lodash');
try {
window.Popper = require('popper.js').default;
window.$ = window.jQuery = require('jquery');



} catch (e) {}

Now the chart.js is loaded in the resource/js/app.js as shown below


Now in my chart.js I have this

$(function () {

function getSize(elementId) {
return {
width: document.getElementById(elementId).offsetWidth,
height: document.getElementById(elementId).offsetHeight,

let data = [
[0, 1, 2, 3, 4, 5, 6],
[28, 48, 40, 19, 86, 27, 90],
[65, 59, 80, 81, 56, 55, 40]

const optsLineChart = {
... getSize('lineChart'),
scales: {
x: {
time: false,
y: {
range: [0, 100],
series: [
fill: 'transparent',
width: 5,
stroke: 'rgba(60,141,188,1)',
stroke: '#c1c7d1',
width: 5,
fill: 'transparent',

let lineChart = new uPlot(optsLineChart, data, document.getElementById('lineChart'));
window.addEventListener("resize", e => {

Now the element lineChart is already defined but it’s throwing an error when the script reaches the line new uPlot. I checked the pub/js/app.js and the uPlot was successfully imported. As well as the chart.js is included in the app.js. But one this I noticed is the script of chart.js is added at the very top of the app.js file while the uPlot is added at the bottom part.

How can I fix this? It doesn’t seem like the uPlot library is being read or loaded in the chart.js file

from Newest questions tagged laravel-5 – Stack Overflow

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