From 289b2b81cab94258565d288a1a9fa83fbf7dc2f9 Mon Sep 17 00:00:00 2001
From: Islam Shehata <islam@axiom.co>
Date: Wed, 27 Mar 2024 14:03:41 +0200
Subject: [PATCH] stringify event before sending to console

---
 src/logger.ts              |  2 +-
 tests/vercelConfig.test.ts | 17 ++++++-----------
 2 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/src/logger.ts b/src/logger.ts
index 6e8a82ff..45ac0758 100644
--- a/src/logger.ts
+++ b/src/logger.ts
@@ -160,7 +160,7 @@ export class Logger {
     // to send logs to Axiom without HTTP.
     // This saves resources and time on lambda and edge functions
     if (isVercel && (this.config.source === 'edge' || this.config.source === 'lambda')) {
-      this.logEvents.forEach((ev) => console.log(ev));
+      this.logEvents.forEach((ev) => console.log(JSON.stringify(ev)));
       this.logEvents = [];
       return;
     }
diff --git a/tests/vercelConfig.test.ts b/tests/vercelConfig.test.ts
index d0cf1141..61636143 100644
--- a/tests/vercelConfig.test.ts
+++ b/tests/vercelConfig.test.ts
@@ -29,15 +29,10 @@ test('logging to console when running on lambda', async () => {
 
   await logger.flush();
   expect(mockedConsole).toHaveBeenCalledTimes(1);
-  expect(mockedConsole).toHaveBeenCalledWith({
-    _time: time,
-    fields: {},
-    level: 'info',
-    message: 'hello, world!',
-    vercel: {
-      environment: 'test',
-      region: undefined,
-      source: 'lambda',
-    },
-  });
+
+  const calledWithPayload = JSON.parse(mockedConsole.mock.calls[0][0]);
+  expect(calledWithPayload.message).toEqual('hello, world!');
+  expect(calledWithPayload.level).toEqual('info');
+  expect(calledWithPayload._time).toEqual(time);
+  expect(calledWithPayload.vercel.source).toEqual('lambda');
 });