Function deepMerge

test/integration/setup/test-harness.js:109–118

(target, source)

    try {
      // Deep merge preferences
      const deepMerge = (target, source) => {
        Object.keys(source).forEach(key => {
          if (source[key] && typeof source[key] === 'object' && !Array.isArray(source[key])) {
            target[key] = target[key] || {};
            deepMerge(target[key], source[key]);
          } else {
            target[key] = source[key];
          }
        });
      };
      deepMerge(prefs, prefUpdates);
    } catch (error) {
      console.error('testHarness.setPrefs: Failed to set preferences:', error);