Fix documet is not defined issue

src/browser/index.js

@@ -68,7 +68,7 @@ exports.defaultOptions = {
 exports.spawnWorker = (instance, { workerPath }) => {
   let worker;
   if (window.Blob && window.URL) {
-    const blob = new Blob([`importScripts("${resolveURL(workerPath)}");`]);
+    const blob = new Blob([`importScripts("${workerPath}");`]);
     worker = new Worker(window.URL.createObjectURL(blob));
   } else {
     worker = new Worker(workerPath);

src/browser/worker.js

@@ -9,7 +9,6 @@
  */
 
 const check = require('check-types');
-const resolveURL = require('resolve-url');
 const workerUtils = require('../common/workerUtils');
 
 /*
@@ -27,7 +26,7 @@ workerUtils.setAdapter({
   getCore: (corePath, res) => {
     if (check.undefined(global.TesseractCore)) {
       res.progress({ status: 'loading tesseract core', progress: 0 });
-      global.importScripts(resolveURL(corePath));
+      global.importScripts(corePath);
       /*
        * Depending on whether the browser supports WebAssembly,
        * the version of the TesseractCore will be different.

src/common/TesseractWorker.js

@@ -8,6 +8,7 @@
  * @author Jerome Wu <jeromewus@gmail.com>
  */
 const check = require('check-types');
+const resolveURL = process.browser ? require('resolve-url') : s => s;
 const adapter = require('../node');
 const circularize = require('./circularize');
 const TesseractJob = require('./TesseractJob');
@@ -50,6 +51,11 @@ class TesseractWorker {
       ...adapter.defaultOptions,
       ...options,
     };
+    ['corePath', 'workerPath', 'langPath'].forEach((key) => {
+      if (check.not.undefined(options[key])) {
+        this.options = { ...this.options, [key]: resolveURL(options[key]) };
+      }
+    });
     this._currentJob = null;
     this._queue = [];
   }