Bundle sql worker with webpack

preload.js

@@ -688,36 +688,7 @@ try {
   });
 
   if (config.environment === 'test') {
-    // This is a hack to let us run TypeScript tests in the renderer process. See the
-    //   code in `test/index.html`.
-    const pendingDescribeCalls = [];
-    window.describe = (...args) => {
-      pendingDescribeCalls.push(args);
-    };
-
-    /* eslint-disable global-require, import/no-extraneous-dependencies */
-    const fastGlob = require('fast-glob');
-
-    fastGlob
-      .sync('./ts/test-{both,electron}/**/*_test.js', {
-        absolute: true,
-        cwd: __dirname,
-      })
-      .forEach(require);
-
-    delete window.describe;
-
-    window.test = {
-      pendingDescribeCalls,
-      fastGlob,
-      normalizePath: require('normalize-path'),
-      fse: require('fs-extra'),
-      tmp: require('tmp'),
-      path: require('path'),
-      basePath: __dirname,
-      attachmentsPath: window.Signal.Migrations.attachmentsPath,
-    };
-    /* eslint-enable global-require, import/no-extraneous-dependencies */
+    require('./preload_test.js');
   }
 } catch (error) {
   /* eslint-disable no-console */