Guide on integrating the highcharts-border-radius plugin into a LitElement web component

Developed a custom web component with LitElement and incorporated a columnrange chart using highcharts. I wanted to apply border radius exclusively to the top left and top right corners of the bars. To achieve this, I attempted to use the highcharts-border-radius external plugin which offers properties like borderRadiusTopLeft and borderRadiusTopRight. However, I encountered an issue when trying to import this plugin into my component. Upon importing it, an error message indicating that Highcharts is not defined was displayed.

I made various attempts to import the plugin:

import "highcharts-border-radius";

I also tried the following:

const borderRadius = require("highcharts-border-radius");

borderRadius(Highcharts);

However, when utilizing the second method, I received an error stating ReferenceError: require is not defined.

If anyone has any suggestions on how to successfully import this external plugin into a LIT element, your assistance would be greatly appreciated.

typescriptnpmlit-elementlit

Answer №1

While the original highcharts package supports ES module exports, the plugin highcharts-border-radius does not offer this feature.

In order to use the plugin in a browser environment as is, you will need to ensure that Highcharts is globally installed.

One approach to achieve this is by also incorporating the UMD version of highcharts

import 'highcharts';
import 'highcharts-border-radius';

Highcharts.chart(...)

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