feat: log errors

package.json

@@ -19,7 +19,8 @@
     "@types/roarr": "^2.14.2",
     "@types/set-interval-async": "^1.0.0",
     "es6-error": "^4.1.1",
-    "roarr": "^2.15.4"
+    "roarr": "^2.15.4",
+    "serialize-error": "^7.0.1"
   },
   "description": "Database-agnostic task scheduler.",
   "devDependencies": {

src/factories/createPlanton.ts

@@ -1,4 +1,7 @@
 import delay from 'delay';
+import {
+  serializeError,
+} from 'serialize-error';
 import Logger from '../Logger';
 import {
   UnexpectedTaskInstructionsError,
@@ -120,6 +123,11 @@ const createPlanton = (configuration: PlantonConfigurationInput): Planton => {
               limit: concurrency - activeTaskInstructions.length,
             });
           } catch (error) {
+            log.error({
+              error: serializeError(error),
+              taskName: task.name,
+            }, 'scheduler produced an error');
+
             events.emit('error', {
               error,
               taskName: task.name || '',
@@ -134,6 +142,11 @@ const createPlanton = (configuration: PlantonConfigurationInput): Planton => {
               taskName: task.name || '',
             });
 
+            log.error({
+              taskInstructions,
+              taskName: task.name,
+            }, 'scheduler produced an unexpected result; result is not array');
+
             taskInstructions = [];
           }
 
@@ -144,6 +157,11 @@ const createPlanton = (configuration: PlantonConfigurationInput): Planton => {
                 taskName: task.name || '',
               });
 
+              log.error({
+                taskInstructions,
+                taskName: task.name,
+              }, 'scheduler produced an unexpected result; array members are not string');
+
               taskInstructions = [];
 
               break;