index.js

'use strict';

module.exports = {
  name: require('./package').name,

  contentFor: function (type, config) {
    if (type === 'body-footer') {
      if (!config.segment || !config.segment.WRITE_KEY) {
        return '';
      }

      let nonceAttr = '';

      if (config.segment.cspNonce) {
        nonceAttr = `nonce="${config.segment.cspNonce}" `;
      }

      const proxyDomain = config.segment.proxyDomain;
      let segmentDomain = proxyDomain || 'https://cdn.segment.com/';

      if (!/\/$/.test(segmentDomain)) {
        segmentDomain += '/';
      }

      return `<script ${nonceAttr} type="text/javascript">
          !function(){var analytics=window.analytics=window.analytics||[];if(!analytics.initialize)if(analytics.invoked)window.console&&console.error&&console.error("Segment snippet included twice.");else{analytics.invoked=!0;analytics.methods=["trackSubmit","trackClick","trackLink","trackForm","pageview","identify","reset","group","track","ready","alias","debug","page","once","off","on","addSourceMiddleware","addIntegrationMiddleware","setAnonymousId","addDestinationMiddleware"];analytics.factory=function(e){return function(){var t=Array.prototype.slice.call(arguments);t.unshift(e);analytics.push(t);return analytics}};for(var e=0;e<analytics.methods.length;e++){var key=analytics.methods[e];analytics[key]=analytics.factory(key)}analytics.load=function(key,e){var t=document.createElement("script");t.type="text/javascript";t.async=!0;t.src="${segmentDomain}analytics.js/v1/" + key + "/analytics.min.js";var n=document.getElementsByTagName("script")[0];n.parentNode.insertBefore(t,n);analytics._loadOptions=e};analytics._writeKey="${config.segment.WRITE_KEY}";analytics.SNIPPET_VERSION="4.13.2";
          analytics.load("${config.segment.WRITE_KEY}");
          }}();
        </script>`;
    }
  },
};