1. /* global chrome */

  2. 

  3. // Firefox doesn't support ExecutionWorld.MAIN yet

  4. // https://bugzilla.mozilla.org/show_bug.cgi?id=1736575

  5. function executeScriptForFirefoxInMainWorld({target, files}) {

  6.   return chrome.scripting.executeScript({

  7.     target,

  8.     func: fileNames => {

  9.       function injectScriptSync(src) {

  10.         let code = '';

  11.         const request = new XMLHttpRequest();

  12.         request.addEventListener('load', function () {

  13.           code = this.responseText;

  14.         });

  15.         request.open('GET', src, false);

  16.         request.send();

  17. 

  18.         const script = document.createElement('script');

  19.         script.textContent = code;

  20. 

  21.         // This script runs before the <head> element is created,

  22.         // so we add the script to <html> instead.

  23.         if (document.documentElement) {

  24.           document.documentElement.appendChild(script);

  25.         }

  26. 

  27.         if (script.parentNode) {

  28.           script.parentNode.removeChild(script);

  29.         }

  30.       }

  31. 

  32.       fileNames.forEach(file => injectScriptSync(chrome.runtime.getURL(file)));

  33.     },

  34.     args: [files],

  35.   });

  36. }

  37. 

  38. export function executeScriptInIsolatedWorld({target, files}) {

  39.   return chrome.scripting.executeScript({

  40.     target,

  41.     files,

  42.     world: chrome.scripting.ExecutionWorld.ISOLATED,

  43.   });

  44. }

  45. 

  46. export function executeScriptInMainWorld({target, files}) {

  47.   if (__IS_FIREFOX__) {

  48.     return executeScriptForFirefoxInMainWorld({target, files});

  49.   }

  50. 

  51.   return chrome.scripting.executeScript({

  52.     target,

  53.     files,

  54.     world: chrome.scripting.ExecutionWorld.MAIN,

  55.   });

  56. }
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