feat: Implement WDA restart for unexpected crashes

lib/commands/find.js

@@ -89,8 +89,8 @@ export default {
     if (rewroteSelector) {
       this.log.info(
         `Rewrote incoming selector from '${initSelector}' to ` +
-          `'${selector}' to match XCUI type. You should consider ` +
-          `updating your tests to use the new selectors directly`,
+        `'${selector}' to match XCUI type. You should consider ` +
+        `updating your tests to use the new selectors directly`,
       );
     }
 
@@ -122,7 +122,10 @@ export default {
           els = /** @type {Element[]|undefined} */ (
             await this.proxyCommand(endpoint, method, body)
           );
-        } catch {
+        } catch (err) {
+          if (err.message && err.message.match(/socket hang up/)) {
+            throw err;
+          }
           els = [];
         }
         // we succeed if we get some elements
@@ -132,6 +135,9 @@ export default {
       if (err.message && err.message.match(/Condition unmet/)) {
         // condition was not met setting res to empty array
         els = [];
+      }
+      else if (err.message && err.message.match(/socket hang up/)) {
+        throw err;
       } else {
         throw err;
       }
@@ -193,7 +199,7 @@ function rewriteMagicScrollable(mult, log = null) {
   }
   log?.info(
     'Rewrote request for scrollable descendants to class chain ' +
-      `format with selector '${selector}'`,
+    `format with selector '${selector}'`,
   );
   return [strategy, selector];
 }

lib/desired-caps.js

@@ -383,7 +383,11 @@ const desiredCapConstraints = /** @type {const} */ ({
   pageLoadStrategy: {
     isString: true,
     inclusionCaseInsensitive: ['none', 'eager', 'normal']
-  }
+  },
+  enableWdaRestart: {
+    presence: false,
+    isBoolean: true,
+  },
 });
 
 export {desiredCapConstraints, PLATFORM_NAME_IOS, PLATFORM_NAME_TVOS};