fonteva-design-guide/force-app/main/default/lwc/pfmSnippet/pfmSnippet.js

## Dev, Build and Test

import { LightningElement, api, track } from 'lwc';
import { loadScript, loadStyle } from 'lightning/platformResourceLoader';
import PORTAL from '@salesforce/resourceUrl/PFM_Portal';
import SLDS_FRAMEWORK from '@salesforce/resourceUrl/PFM_Base';

export default class Snippet extends LightningElement {
    @track adding;
    @track copyState = 'Copy';
    connectedCallback() {
        this.loadDependentStyles();
        //        Prism.highlightAll();
    }
    renderedCallback() {
        const code = this.template.querySelector('code');
        this.adding = code.outerText;
    }
    toClipboard() {
        const code = this.template.querySelector('code'),
            str = this.template.querySelector('textarea'),
            self = this;

        this.copyState = 'Copied';
        str.select();
        document.execCommand('copy');
        str.blur();

        setTimeout(function () {
            self.copyState = 'Copy';
        }, 1500);
    }
    loadDependentStyles() {
        if (!window.pfmSnippetStylesLoaded) {
            loadStyle(this, SLDS_FRAMEWORK + '/css/prism.css');
            loadScript(this, SLDS_FRAMEWORK + '/js/prism.js');
            window.pfmSnippetStylesLoaded = true;
        }
    }
}