get date before yielding the event loop

Author: riccardobl

lib/logger.js

@@ -92,6 +92,7 @@ export class JSONLogAttachment extends LogAttachment {
       return Promise.resolve(serialize(m))
     })
 
+    const date = new Date().toISOString()
     Promise.all(messageParts)
       .then(parts => {
         return fetch(this.endpoint, {
@@ -104,7 +105,7 @@ export class JSONLogAttachment extends LogAttachment {
             tags,
             level: Object.entries(LogLevel).find(([k, v]) => v === level)[0],
             message: parts.join(' '),
-            createdAt: new Date().toISOString()
+            createdAt: date
           })
         })
       }).catch(e => console.error('Error in JSONLogAttachment', e))