From 6b3b8c09496038797e0b3d0ffd8ad0b185cb64fa Mon Sep 17 00:00:00 2001
From: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Date: Fri, 29 May 2026 21:06:25 +0200
Subject: [PATCH] refactor(api): replace mongodb with bson (#67680)

---
 api/__fixtures__/exam-environment-exam.ts | 2 +-
 api/package.json                          | 2 +-
 api/src/routes/protected/user.test.ts     | 2 +-
 api/src/routes/protected/user.ts          | 2 +-
 api/src/routes/public/user.test.ts        | 2 +-
 api/src/routes/public/user.ts             | 2 +-
 api/src/utils/validation.ts               | 2 +-
 pnpm-lock.yaml                            | 6 +++---
 8 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/api/__fixtures__/exam-environment-exam.ts b/api/__fixtures__/exam-environment-exam.ts
index 6ff3b7c20b3..bf8877d8099 100644
--- a/api/__fixtures__/exam-environment-exam.ts
+++ b/api/__fixtures__/exam-environment-exam.ts
@@ -9,7 +9,7 @@ import {
   ExamEnvironmentQuestionSet,
   ExamEnvironmentChallenge
 } from '@prisma/client';
-import { ObjectId } from 'mongodb';
+import { ObjectId } from 'bson';
 import { examEnvironmentPostExamAttempt } from '../src/exam-environment/schemas/index.js';
 
 const defaultUserId = '5bd30e0f1caf6ac3ddddddb5';
diff --git a/api/package.json b/api/package.json
index 6bfc4c3c419..456c5cefaaa 100644
--- a/api/package.json
+++ b/api/package.json
@@ -17,6 +17,7 @@
     "@sentry/node": "9.47.1",
     "ajv": "8.20.0",
     "ajv-formats": "3.0.1",
+    "bson": "7.2.0",
     "date-fns": "4.1.0",
     "date-fns-tz": "3.2.0",
     "dotenv": "16.6.1",
@@ -27,7 +28,6 @@
     "jsonwebtoken": "9.0.3",
     "lodash": "4.18.1",
     "lodash-es": "4.18.1",
-    "mongodb": "6.21.0",
     "nanoid": "3",
     "no-profanity": "1.5.1",
     "nodemailer": "6.10.1",
diff --git a/api/src/routes/protected/user.test.ts b/api/src/routes/protected/user.test.ts
index 3ce266fc603..963896aaa1f 100644
--- a/api/src/routes/protected/user.test.ts
+++ b/api/src/routes/protected/user.test.ts
@@ -14,7 +14,7 @@ import {
 } from 'vitest';
 import jwt, { JwtPayload } from 'jsonwebtoken';
 import { DailyCodingChallengeLanguage, type Prisma } from '@prisma/client';
-import { ObjectId } from 'mongodb';
+import { ObjectId } from 'bson';
 import { omit } from 'lodash-es';
 
 import { createUserInput } from '../../utils/create-user.js';
diff --git a/api/src/routes/protected/user.ts b/api/src/routes/protected/user.ts
index 31cb0e29138..3efe7258415 100644
--- a/api/src/routes/protected/user.ts
+++ b/api/src/routes/protected/user.ts
@@ -1,5 +1,5 @@
 import type { FastifyPluginCallbackTypebox } from '@fastify/type-provider-typebox';
-import { ObjectId } from 'mongodb';
+import { ObjectId } from 'bson';
 import { FastifyInstance, FastifyReply } from 'fastify';
 import jwt from 'jsonwebtoken';
 import { PrismaClientKnownRequestError } from '@prisma/client/runtime/library.js';
diff --git a/api/src/routes/public/user.test.ts b/api/src/routes/public/user.test.ts
index 40b457e4643..2eb4d198408 100644
--- a/api/src/routes/public/user.test.ts
+++ b/api/src/routes/public/user.test.ts
@@ -1,5 +1,5 @@
 import type { Prisma } from '@prisma/client';
-import { ObjectId } from 'mongodb';
+import { ObjectId } from 'bson';
 import { omit } from 'lodash-es';
 import {
   describe,
diff --git a/api/src/routes/public/user.ts b/api/src/routes/public/user.ts
index 423e911fefc..051d255daf8 100644
--- a/api/src/routes/public/user.ts
+++ b/api/src/routes/public/user.ts
@@ -1,6 +1,6 @@
 import { Experience, Portfolio } from '@prisma/client';
 import { type FastifyPluginCallbackTypebox } from '@fastify/type-provider-typebox';
-import { ObjectId } from 'mongodb';
+import { ObjectId } from 'bson';
 import { omit } from 'lodash-es';
 
 import { isRestricted } from '../helpers/is-restricted.js';
diff --git a/api/src/utils/validation.ts b/api/src/utils/validation.ts
index 87779595616..938a9df0d5e 100644
--- a/api/src/utils/validation.ts
+++ b/api/src/utils/validation.ts
@@ -1,4 +1,4 @@
-import { ObjectId } from 'mongodb';
+import { ObjectId } from 'bson';
 
 // This is trivial, but makes it simple to refactor if we swap monogodb for
 // bson, say.
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index c734ba21ddf..2d5e46e1b01 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -128,6 +128,9 @@ importers:
       ajv-formats:
         specifier: 3.0.1
         version: 3.0.1(ajv@8.20.0)
+      bson:
+        specifier: 7.2.0
+        version: 7.2.0
       date-fns:
         specifier: 4.1.0
         version: 4.1.0
@@ -158,9 +161,6 @@ importers:
       lodash-es:
         specifier: 4.18.1
         version: 4.18.1
-      mongodb:
-        specifier: 6.21.0
-        version: 6.21.0(@aws-sdk/credential-providers@3.521.0)(socks@2.8.7)
       nanoid:
         specifier: '3'
         version: 3.3.12