webpack-dev-server/client/utils/getCurrentScriptSource.js

'use strict';

function getCurrentScriptSource() {
  // `document.currentScript` is the most accurate way to find the current script,
  // but is not supported in all browsers.
  if (document.currentScript) {
    return document.currentScript.getAttribute('src');
  } // Fall back to getting all scripts in the document.


  var scriptElements = document.scripts || [];
  var currentScript = scriptElements[scriptElements.length - 1];

  if (currentScript) {
    return currentScript.getAttribute('src');
  } // Fail as there was no script to use.


  throw new Error('[WDS] Failed to get current script source.');
}

module.exports = getCurrentScriptSource;