From 3f79b18a264241861bf34fe2f42d4b09444f8e8e Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Sun, 4 Sep 2022 16:25:15 -0400
Subject: [PATCH 01/28] feat: run tests on Deno

Re: #9056
---
 .github/workflows/test.yml          | 17 +++++++++++++++
 lib/schematype.js                   |  2 +-
 package.json                        |  1 +
 test/deno.js                        | 33 +++++++++++++++++++++++++++++
 test/docs/lean.test.js              |  7 +++++-
 test/query.test.js                  |  7 ++++++
 test/schema.subdocumentpath.test.js |  3 +--
 test/schema.test.js                 |  5 +++++
 test/schematype.test.js             |  2 ++
 9 files changed, 73 insertions(+), 4 deletions(-)
 create mode 100644 test/deno.js

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8edfff05c8c..89da7ec2a4a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -91,6 +91,23 @@ jobs:
         with:
           name: coverage
           path: coverage
+  
+  test-deno:
+    runs-on: ubuntu-latest
+    name: Deno tests
+    steps:
+      - uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b # v3.0.2
+      - name: Setup node
+        uses: actions/setup-node@2fddd8803e2f5c9604345a0b591c3020ee971a93 # v3.4.1
+        with:
+          node-version: 16
+      - name: Setup Deno
+        uses: actions/setup-deno #v1
+        with:
+          deno-version: v1.25.x
+      - run: npm install
+      - name: Run Deno tests
+        run: npm run test-deno
 
   test-replica-sets:
     needs:
diff --git a/lib/schematype.js b/lib/schematype.js
index 0cc6c3eea59..837719a32a9 100644
--- a/lib/schematype.js
+++ b/lib/schematype.js
@@ -56,7 +56,7 @@ function SchemaType(path, options, instance) {
   const defaultOptionsKeys = Object.keys(defaultOptions);
 
   for (const option of defaultOptionsKeys) {
-    if (defaultOptions.hasOwnProperty(option) && !options.hasOwnProperty(option)) {
+    if (defaultOptions.hasOwnProperty(option) && !Object.prototype.hasOwnProperty.call(options, option)) {
       options[option] = defaultOptions[option];
     }
   }
diff --git a/package.json b/package.json
index 2767c008775..3360a3ccc8c 100644
--- a/package.json
+++ b/package.json
@@ -94,6 +94,7 @@
     "release-legacy": "git pull origin 5.x && git push origin 5.x --tags && npm publish --tag legacy",
     "mongo": "node ./tools/repl.js",
     "test": "mocha --exit ./test/*.test.js",
+    "test-deno": "deno run --allow-env --allow-read --allow-net --allow-run --unstable ./test/deno.js",
     "test-rs": "START_REPLICA_SET=1 mocha --timeout 30000 --exit ./test/*.test.js",
     "test-tsd": "node ./test/types/check-types-filename && tsd",
     "tdd": "mocha ./test/*.test.js --inspect --watch --recursive --watch-files ./**/*.{js,ts}",
diff --git a/test/deno.js b/test/deno.js
new file mode 100644
index 00000000000..a13618ae410
--- /dev/null
+++ b/test/deno.js
@@ -0,0 +1,33 @@
+'use strict';
+
+import { createRequire } from "https://deno.land/std/node/module.ts";
+
+import { parse } from "https://deno.land/std/flags/mod.ts"
+const args = parse(Deno.args);
+
+const require = createRequire(import.meta.url);
+
+const Mocha = require('mocha');
+const fs = require('fs');
+const path = require('path');
+
+const mocha = new Mocha({
+  ...(args.g ? { fgrep: '' + args.g } : {})
+});
+
+const testDir = 'test';
+const files = fs.readdirSync(testDir);
+
+const ignoreFiles = new Set(['browser.test.js', 'connection.test.js', 'index.test.js']);
+
+for (const file of files) {
+  if (!file.endsWith('.test.js') || ignoreFiles.has(file)) {
+    continue;
+  }
+
+  mocha.addFile(path.join(testDir, file));
+}
+
+mocha.run(function(failures) {
+  process.exitCode = failures ? 1 : 0;  // exit with non-zero status if there were failures
+});
\ No newline at end of file
diff --git a/test/docs/lean.test.js b/test/docs/lean.test.js
index 49cd0c45aad..576d8bcdcf3 100644
--- a/test/docs/lean.test.js
+++ b/test/docs/lean.test.js
@@ -1,7 +1,6 @@
 'use strict';
 
 const assert = require('assert');
-const v8Serialize = require('v8').serialize;
 const start = require('../common');
 
 // This file is in `es-next` because it uses async/await for convenience
@@ -23,6 +22,12 @@ describe('Lean Tutorial', function() {
   });
 
   it('compare sizes lean vs not lean', async function() {
+    // acquit:ignore:start
+    if (typeof Deno !== 'undefined') {
+      return this.skip(); // Deno does not support v8.serialize()
+    }
+    const v8Serialize = require('v8').serialize;
+    // acquit:ignore:end
     const schema = new mongoose.Schema({ name: String });
     const MyModel = mongoose.model('Test', schema);
 
diff --git a/test/query.test.js b/test/query.test.js
index d357d256001..fc1ad0b4080 100644
--- a/test/query.test.js
+++ b/test/query.test.js
@@ -2339,6 +2339,13 @@ describe('Query', function() {
       });
 
       it('throw on sync exceptions in callbacks (gh-6178)', function(done) {
+        // Deno doesn't support 'uncaughtException', so there's no way to test this in Deno
+        // without starting a separate process.
+        // See: https://stackoverflow.com/questions/64871554/deno-how-to-handle-exceptions
+        if (typeof Deno !== 'undefined') {
+          return this.skip();
+        }
+
         const schema = new Schema({});
         const Test = db.model('Test', schema);
 
diff --git a/test/schema.subdocumentpath.test.js b/test/schema.subdocumentpath.test.js
index d7a131ab5c3..60d4a1e2f3c 100644
--- a/test/schema.subdocumentpath.test.js
+++ b/test/schema.subdocumentpath.test.js
@@ -179,7 +179,7 @@ describe('SubdocumentPath', function() {
     assert.ok(err);
     assert.ok(err.errors['nested']);
 
-    mongoose.Schema.Types.Subdocument.set('required', false);
+    delete mongoose.Schema.Types.Subdocument.defaultOptions.required;
   });
 
   it('supports setting _id globally (gh-11541) (gh-8883)', function() {
@@ -197,6 +197,5 @@ describe('SubdocumentPath', function() {
     assert.ok(!doc.nested._id);
 
     delete mongoose.Schema.Types.Subdocument.defaultOptions._id;
-    mongoose.Schema.Types.Subdocument.set('required', false);
   });
 });
diff --git a/test/schema.test.js b/test/schema.test.js
index c09895de3b3..0a994b87398 100644
--- a/test/schema.test.js
+++ b/test/schema.test.js
@@ -1178,6 +1178,11 @@ describe('schema', function() {
 
   describe('other contexts', function() {
     it('work', function(done) {
+      if (typeof Deno !== 'undefined') {
+        // Deno throws "Not implemented: Script.prototype.runInNewContext"
+        return this.skip();
+      }
+
       const str = 'code = {' +
         '  name: String' +
         ', arr1: Array ' +
diff --git a/test/schematype.test.js b/test/schematype.test.js
index 6b96bde4377..6e07390a2bc 100644
--- a/test/schematype.test.js
+++ b/test/schematype.test.js
@@ -224,6 +224,8 @@ describe('schematype', function() {
 
         // Assert
         assert.equal(schema.path('test').options.someRandomOption, true);
+
+        delete type.defaultOptions.someRandomOption;
       });
     });
   });

From c1a4823d7f6a06d58ab1c68b3ac274fc0a94be2e Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Sun, 4 Sep 2022 16:30:37 -0400
Subject: [PATCH 02/28] chore: correct action name

---
 .github/workflows/test.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 89da7ec2a4a..bb4fed97caf 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -102,7 +102,7 @@ jobs:
         with:
           node-version: 16
       - name: Setup Deno
-        uses: actions/setup-deno #v1
+        uses: denoland/setup-deno@v1
         with:
           deno-version: v1.25.x
       - run: npm install

From 52110b64600e175d96779c78d9d7dfc2d003bf02 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Sun, 4 Sep 2022 16:33:24 -0400
Subject: [PATCH 03/28] chore: setup MongoDB server on deno tests

Re: #9056
---
 .github/workflows/test.yml | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index bb4fed97caf..d3023817a68 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -93,10 +93,20 @@ jobs:
           path: coverage
   
   test-deno:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     name: Deno tests
     steps:
       - uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b # v3.0.2
+      - name: Setup
+        run: |
+          wget -q https://downloads.mongodb.org/linux/mongodb-linux-x86_64-ubuntu-2004-6.0.0.tgz
+          tar xf mongodb-linux-x86_64-ubuntu-2004-6.0.0.tgz
+          mkdir -p ./data/db/27017 ./data/db/27000
+          printf "\ntimeout: 8000" >> ./.mocharc.yml
+          ./mongodb-linux-x86_64-ubuntu-2004-6.0.0/bin/mongod --setParameter ttlMonitorSleepSecs=1 --fork --dbpath ./data/db/27017 --syslog --port 27017
+          sleep 2
+          mongod --version
+          echo `pwd`/mongodb-linux-x86_64-ubuntu-2004-6.0.0/bin >> $GITHUB_PATH
       - name: Setup node
         uses: actions/setup-node@2fddd8803e2f5c9604345a0b591c3020ee971a93 # v3.4.1
         with:

From 8697ce575f861aeb1301dc55e7f34837eeed4dab Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Sun, 4 Sep 2022 16:35:34 -0400
Subject: [PATCH 04/28] chore: correct download path re: #9056

---
 .github/workflows/test.yml | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d3023817a68..6c2dc7af353 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -99,14 +99,14 @@ jobs:
       - uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b # v3.0.2
       - name: Setup
         run: |
-          wget -q https://downloads.mongodb.org/linux/mongodb-linux-x86_64-ubuntu-2004-6.0.0.tgz
-          tar xf mongodb-linux-x86_64-ubuntu-2004-6.0.0.tgz
+          wget -q https://downloads.mongodb.org/linux/mongodb-linux-x86_64-ubuntu2004-6.0.0.tgz
+          tar xf mongodb-linux-x86_64-ubuntu2004-6.0.0.tgz
           mkdir -p ./data/db/27017 ./data/db/27000
           printf "\ntimeout: 8000" >> ./.mocharc.yml
-          ./mongodb-linux-x86_64-ubuntu-2004-6.0.0/bin/mongod --setParameter ttlMonitorSleepSecs=1 --fork --dbpath ./data/db/27017 --syslog --port 27017
+          ./mongodb-linux-x86_64-ubuntu2004-6.0.0/bin/mongod --setParameter ttlMonitorSleepSecs=1 --fork --dbpath ./data/db/27017 --syslog --port 27017
           sleep 2
           mongod --version
-          echo `pwd`/mongodb-linux-x86_64-ubuntu-2004-6.0.0/bin >> $GITHUB_PATH
+          echo `pwd`/mongodb-linux-x86_64-ubuntu2004-6.0.0/bin >> $GITHUB_PATH
       - name: Setup node
         uses: actions/setup-node@2fddd8803e2f5c9604345a0b591c3020ee971a93 # v3.4.1
         with:

From 32e805566be06427c844848be86001c5fc84afbd Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 11:39:51 -0400
Subject: [PATCH 05/28] test: convert #3973 test to async/await to try to work
 around deno test failures re: #9056

---
 test/model.populate.test.js | 53 ++++++++++++++++---------------------
 1 file changed, 23 insertions(+), 30 deletions(-)

diff --git a/test/model.populate.test.js b/test/model.populate.test.js
index 58c808c2fb1..0c438e0d09c 100644
--- a/test/model.populate.test.js
+++ b/test/model.populate.test.js
@@ -3783,7 +3783,7 @@ describe('model: populate:', function() {
       }
     });
 
-    it('4 level population (gh-3973)', function(done) {
+    it('4 level population (gh-3973)', async function() {
       const level4Schema = new Schema({
         name: { type: String }
       });
@@ -3809,36 +3809,29 @@ describe('model: populate:', function() {
       const level1 = db.model('Test', level1Schema);
 
       const l4docs = [{ name: 'level 4' }];
+      const l4 = await level4.create(l4docs);
 
-      level4.create(l4docs, function(error, l4) {
-        assert.ifError(error);
-        const l3docs = [{ name: 'level 3', level4: l4[0]._id }];
-        level3.create(l3docs, function(error, l3) {
-          assert.ifError(error);
-          const l2docs = [{ name: 'level 2', level3: l3[0]._id }];
-          level2.create(l2docs, function(error, l2) {
-            assert.ifError(error);
-            const l1docs = [{ name: 'level 1', level2: l2[0]._id }];
-            level1.create(l1docs, function(error, l1) {
-              assert.ifError(error);
-              const opts = {
-                path: 'level2',
-                populate: {
-                  path: 'level3',
-                  populate: {
-                    path: 'level4'
-                  }
-                }
-              };
-              level1.findById(l1[0]._id).populate(opts).exec(function(error, obj) {
-                assert.ifError(error);
-                assert.equal(obj.level2[0].level3[0].level4[0].name, 'level 4');
-                done();
-              });
-            });
-          });
-        });
-      });
+      const l3docs = [{ name: 'level 3', level4: l4[0]._id }];
+      const l3 = await level3.create(l3docs);
+
+      const l2docs = [{ name: 'level 2', level3: l3[0]._id }];
+      const l2 = await level2.create(l2docs);
+
+      const l1docs = [{ name: 'level 1', level2: l2[0]._id }];
+      const l1 = await level1.create(l1docs);
+
+      const opts = {
+        path: 'level2',
+        populate: {
+          path: 'level3',
+          populate: {
+            path: 'level4'
+          }
+        }
+      };
+
+      const obj = await level1.findById(l1[0]._id).populate(opts).exec();
+      assert.equal(obj.level2[0].level3[0].level4[0].name, 'level 4');
     });
 
     it('deep populate two paths (gh-3974)', function(done) {

From f4d8f611081db9e1cc9fbbdaf5ec6667bc9d209d Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 11:49:41 -0400
Subject: [PATCH 06/28] test: ignore deno.js for linter, convert a few more
 populate tests to async/await for better debug

---
 scripts/create-tarball.js   |   2 +-
 test/.eslintrc.yml          |   2 +
 test/model.populate.test.js | 130 +++++++++++++++---------------------
 3 files changed, 57 insertions(+), 77 deletions(-)

diff --git a/scripts/create-tarball.js b/scripts/create-tarball.js
index e38a3c63b4a..f93d229691a 100644
--- a/scripts/create-tarball.js
+++ b/scripts/create-tarball.js
@@ -4,4 +4,4 @@ const { execSync } = require('child_process');
 const { name, version } = require('../package.json');
 
 execSync('npm pack');
-execSync(`mv ${name}-${version}.tgz ${name}.tgz`);
\ No newline at end of file
+execSync(`mv ${name}-${version}.tgz ${name}.tgz`);
diff --git a/test/.eslintrc.yml b/test/.eslintrc.yml
index 038d1bbc52f..5caa2b37c25 100644
--- a/test/.eslintrc.yml
+++ b/test/.eslintrc.yml
@@ -3,3 +3,5 @@ env:
 rules:
   # In `document.test.js` we sometimes use self assignment to test setters
   no-self-assign: off
+ignorePatterns:
+  - deno.js
\ No newline at end of file
diff --git a/test/model.populate.test.js b/test/model.populate.test.js
index 0c438e0d09c..03bd6b26af3 100644
--- a/test/model.populate.test.js
+++ b/test/model.populate.test.js
@@ -3713,7 +3713,7 @@ describe('model: populate:', function() {
       assert.deepEqual(arr, ['Shaq', 'Kobe', 'Horry']);
     });
 
-    it('deep populate array -> array (gh-3954)', function(done) {
+    it('deep populate array -> array (gh-3954)', async function() {
       const personSchema = new Schema({
         name: { type: String }
       });
@@ -3731,56 +3731,42 @@ describe('model: populate:', function() {
       const Team = db.model('Team', teamSchema);
       const Game = db.model('Test', gameSchema);
 
-      const people = [
+      const people = await Person.create([
         { name: 'Shaq' },
         { name: 'Kobe' },
         { name: 'Horry' },
         { name: 'Duncan' },
         { name: 'Robinson' },
         { name: 'Johnson' }
-      ];
+      ]);
 
-      Person.create(people, function(error, people) {
-        assert.ifError(error);
-        const lakers = {
-          name: 'Lakers',
-          members: [people[0]._id, people[1]._id, people[2]._id]
-        };
-        const spurs = {
-          name: 'Spurs',
-          members: [people[3]._id, people[4]._id, people[5]._id]
-        };
-        const teams = [lakers, spurs];
-        Team.create(teams, function(error, teams) {
-          assert.ifError(error);
-          const game = {
-            teams: [teams[0]._id, teams[1]._id]
-          };
-          Game.create(game, function(error, game) {
-            assert.ifError(error);
-            test(game._id);
-          });
-        });
-      });
+      const lakers = {
+        name: 'Lakers',
+        members: [people[0]._id, people[1]._id, people[2]._id]
+      };
+      const spurs = {
+        name: 'Spurs',
+        members: [people[3]._id, people[4]._id, people[5]._id]
+      };
+      const teams = await Team.create([lakers, spurs]);
 
-      function test(id) {
-        const query = Game.findById(id).populate({
-          path: 'teams',
-          select: 'name members',
-          populate: { path: 'members', select: 'name' }
-        });
-        query.exec(function(error, doc) {
-          assert.ifError(error);
-          const players = doc.toObject().teams[0].members.
-            concat(doc.toObject().teams[1].members);
-          const arr = players.map(function(v) {
-            return v.name;
-          });
-          assert.deepEqual(arr,
-            ['Shaq', 'Kobe', 'Horry', 'Duncan', 'Robinson', 'Johnson']);
-          done();
-        });
-      }
+      const game = {
+        teams: [teams[0]._id, teams[1]._id]
+      };
+      const { _id } = await Game.create(game);
+
+      const doc = await Game.findById(_id).populate({
+        path: 'teams',
+        select: 'name members',
+        populate: { path: 'members', select: 'name' }
+      });
+      const players = doc.toObject().teams[0].members.
+        concat(doc.toObject().teams[1].members);
+      const arr = players.map(function(v) {
+        return v.name;
+      });
+      assert.deepEqual(arr,
+        ['Shaq', 'Kobe', 'Horry', 'Duncan', 'Robinson', 'Johnson']);
     });
 
     it('4 level population (gh-3973)', async function() {
@@ -3834,7 +3820,7 @@ describe('model: populate:', function() {
       assert.equal(obj.level2[0].level3[0].level4[0].name, 'level 4');
     });
 
-    it('deep populate two paths (gh-3974)', function(done) {
+    it('deep populate two paths (gh-3974)', async function() {
       const level3Schema = new Schema({
         name: { type: String }
       });
@@ -3854,42 +3840,34 @@ describe('model: populate:', function() {
       const level2 = db.model('Test1', level2Schema);
       const level1 = db.model('Test2', level1Schema);
 
-      const l3 = [
+      let l3 = [
         { name: 'level 3/1' },
         { name: 'level 3/2' }
       ];
-      level3.create(l3, function(error, l3) {
-        assert.ifError(error);
-        const l2 = [
-          { name: 'level 2', level31: l3[0]._id, level32: l3[1]._id }
-        ];
-        level2.create(l2, function(error, l2) {
-          assert.ifError(error);
-          const l1 = [{ name: 'level 1', level2: l2[0]._id }];
-          level1.create(l1, function(error, l1) {
-            assert.ifError(error);
-            level1.findById(l1[0]._id).
-              populate({
-                path: 'level2',
-                populate: [{
-                  path: 'level31'
-                }]
-              }).
-              populate({
-                path: 'level2',
-                populate: [{
-                  path: 'level32'
-                }]
-              }).
-              exec(function(error, obj) {
-                assert.ifError(error);
-                assert.equal(obj.level2[0].level31[0].name, 'level 3/1');
-                assert.equal(obj.level2[0].level32[0].name, 'level 3/2');
-                done();
-              });
-          });
+      l3 = await level3.create(l3);
+
+      const l2 = await level2.create([
+        { name: 'level 2', level31: l3[0]._id, level32: l3[1]._id }
+      ]);
+
+      const l1 = await level1.create([{ name: 'level 1', level2: l2[0]._id }]);
+
+      const obj = await level1.findById(l1[0]._id).
+        populate({
+          path: 'level2',
+          populate: [{
+            path: 'level31'
+          }]
+        }).
+        populate({
+          path: 'level2',
+          populate: [{
+            path: 'level32'
+          }]
         });
-      });
+
+      assert.equal(obj.level2[0].level31[0].name, 'level 3/1');
+      assert.equal(obj.level2[0].level32[0].name, 'level 3/2');
     });
 
     it('out-of-order discriminators (gh-4073)', function() {

From 0698d9adec2758463a3b1676f8100faafe32748a Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 11:55:04 -0400
Subject: [PATCH 07/28] test: print error to debug why #3973 test only fails on
 Deno in GH workflows re: #9056

---
 test/model.populate.test.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/test/model.populate.test.js b/test/model.populate.test.js
index 03bd6b26af3..91b7f33d846 100644
--- a/test/model.populate.test.js
+++ b/test/model.populate.test.js
@@ -3798,7 +3798,10 @@ describe('model: populate:', function() {
       const l4 = await level4.create(l4docs);
 
       const l3docs = [{ name: 'level 3', level4: l4[0]._id }];
-      const l3 = await level3.create(l3docs);
+      const l3 = await level3.create(l3docs).catch(err => {
+        console.log(err);
+        throw err;
+      });
 
       const l2docs = [{ name: 'level 2', level3: l3[0]._id }];
       const l2 = await level2.create(l2docs);

From 356a13249795c20f958d0bb88c8b0e99f6fda5d9 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 12:22:28 -0400
Subject: [PATCH 08/28] test: print some more errors re: #9056

---
 test/model.populate.test.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/test/model.populate.test.js b/test/model.populate.test.js
index 91b7f33d846..7cf7e1902b4 100644
--- a/test/model.populate.test.js
+++ b/test/model.populate.test.js
@@ -3800,6 +3800,9 @@ describe('model: populate:', function() {
       const l3docs = [{ name: 'level 3', level4: l4[0]._id }];
       const l3 = await level3.create(l3docs).catch(err => {
         console.log(err);
+        console.log(err?.errors);
+        console.log(err?.errors?.level4);
+        console.log(err?.errors?.level4?.reason);
         throw err;
       });
 

From 2bcebe00bf21a963fa962accff59f7cc99a46e49 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 12:27:21 -0400
Subject: [PATCH 09/28] avoid using elvis operator

---
 test/model.populate.test.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/test/model.populate.test.js b/test/model.populate.test.js
index 7cf7e1902b4..5eb732cc3ff 100644
--- a/test/model.populate.test.js
+++ b/test/model.populate.test.js
@@ -3800,9 +3800,9 @@ describe('model: populate:', function() {
       const l3docs = [{ name: 'level 3', level4: l4[0]._id }];
       const l3 = await level3.create(l3docs).catch(err => {
         console.log(err);
-        console.log(err?.errors);
-        console.log(err?.errors?.level4);
-        console.log(err?.errors?.level4?.reason);
+        console.log(err.errors);
+        console.log(err.errors.level4);
+        console.log(err.errors.level4.reason);
         throw err;
       });
 

From 79fb5b2677dceed2f152266eb2564cd27c6d7b71 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 12:34:01 -0400
Subject: [PATCH 10/28] test: try cleaning up castNonArrays option to fix Deno
 tests re: #9056

---
 test/types.array.test.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/test/types.array.test.js b/test/types.array.test.js
index 68d5b2dcd0f..69f7fe81a19 100644
--- a/test/types.array.test.js
+++ b/test/types.array.test.js
@@ -1160,7 +1160,7 @@ describe('types array', function() {
     });
   });
 
-  describe('options', function() {
+  describe.skip('options', function() {
     let arrOptions;
     let docArrOptions;
 
@@ -2166,7 +2166,7 @@ describe('types array', function() {
     assert.strictEqual(arr[0], 42);
   });
 
-  it('test "castNonArrays" property option', function() {
+  it.skip('test "castNonArrays" property option', function() {
     const Model = db.model('Test', new Schema({ x1: { castNonArrays: false, type: [String] }, x2: { castNonArrays: true, type: [String] }, x3: { type: [String] } }));
 
     const string = 'hello';
@@ -2205,5 +2205,7 @@ describe('types array', function() {
 
     // Assert
     assert.ifError(user.validateSync());
+
+    delete m.Schema.Types.Array.options.castNonArrays;
   });
 });

From f89f8332acdbc3c769beea0aa46dfdd2a61817a3 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 12:39:59 -0400
Subject: [PATCH 11/28] test: correctly reset castNonArrays

---
 test/types.array.test.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/test/types.array.test.js b/test/types.array.test.js
index 69f7fe81a19..010b173a5f9 100644
--- a/test/types.array.test.js
+++ b/test/types.array.test.js
@@ -1160,7 +1160,7 @@ describe('types array', function() {
     });
   });
 
-  describe.skip('options', function() {
+  describe('options', function() {
     let arrOptions;
     let docArrOptions;
 
@@ -2166,7 +2166,7 @@ describe('types array', function() {
     assert.strictEqual(arr[0], 42);
   });
 
-  it.skip('test "castNonArrays" property option', function() {
+  it('test "castNonArrays" property option', function() {
     const Model = db.model('Test', new Schema({ x1: { castNonArrays: false, type: [String] }, x2: { castNonArrays: true, type: [String] }, x3: { type: [String] } }));
 
     const string = 'hello';
@@ -2206,6 +2206,6 @@ describe('types array', function() {
     // Assert
     assert.ifError(user.validateSync());
 
-    delete m.Schema.Types.Array.options.castNonArrays;
+    m.Schema.Types.Array.options.castNonArrays = true;
   });
 });

From 5045b5b95611dd4e7d83c96df867187f0c702bed Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 12:51:33 -0400
Subject: [PATCH 12/28] test: skip child_process test in Deno, explicitly exit
 when tests are done re: #9056

---
 package.json                   | 2 +-
 test/deno.js                   | 1 +
 test/errors.validation.test.js | 5 +++++
 test/query.test.js             | 1 -
 4 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index 3360a3ccc8c..4b98cd2d7ca 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   ],
   "license": "MIT",
   "dependencies": {
-    "bson": "^4.6.5",
+    "bson": "^4.7.0",
     "kareem": "2.4.1",
     "mongodb": "4.9.1",
     "mpath": "0.9.0",
diff --git a/test/deno.js b/test/deno.js
index a13618ae410..672556569a7 100644
--- a/test/deno.js
+++ b/test/deno.js
@@ -30,4 +30,5 @@ for (const file of files) {
 
 mocha.run(function(failures) {
   process.exitCode = failures ? 1 : 0;  // exit with non-zero status if there were failures
+  process.exit(process.exitCode);
 });
\ No newline at end of file
diff --git a/test/errors.validation.test.js b/test/errors.validation.test.js
index b881d4bf80a..e778c126208 100644
--- a/test/errors.validation.test.js
+++ b/test/errors.validation.test.js
@@ -234,6 +234,11 @@ describe('ValidationError', function() {
 
   describe('when user code defines a r/o Error#toJSON', function() {
     it('should not fail', function(done) {
+      if (typeof Deno !== 'undefined') {
+        // Deno doesn't support child_process.fork
+        return this.skip();
+      }
+
       const err = [];
       const child = require('child_process')
         .fork('./test/isolated/project-has-error.toJSON.js', ['--no-warnings'], { silent: true });
diff --git a/test/query.test.js b/test/query.test.js
index fc1ad0b4080..dc26ca44fd8 100644
--- a/test/query.test.js
+++ b/test/query.test.js
@@ -3478,7 +3478,6 @@ describe('Query', function() {
     const userSchema = Schema({ token: String });
     const User = db.model('Test', userSchema);
 
-
     const original = await User.create({ token: 'rightToken' });
     let doc = await User.findOne({ token: 'wrongToken', _bsontype: 'a' });
     assert.ok(!doc);

From c13f2a66bf8a7ba9ba71863e8aab50f36d41cca0 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 13:03:17 -0400
Subject: [PATCH 13/28] test: check if #8222 error is caught in Deno re: #9056

---
 test/model.populate.test.js | 3 ---
 test/query.test.js          | 5 ++++-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/test/model.populate.test.js b/test/model.populate.test.js
index 5eb732cc3ff..91b7f33d846 100644
--- a/test/model.populate.test.js
+++ b/test/model.populate.test.js
@@ -3800,9 +3800,6 @@ describe('model: populate:', function() {
       const l3docs = [{ name: 'level 3', level4: l4[0]._id }];
       const l3 = await level3.create(l3docs).catch(err => {
         console.log(err);
-        console.log(err.errors);
-        console.log(err.errors.level4);
-        console.log(err.errors.level4.reason);
         throw err;
       });
 
diff --git a/test/query.test.js b/test/query.test.js
index dc26ca44fd8..dec6c135e44 100644
--- a/test/query.test.js
+++ b/test/query.test.js
@@ -3479,7 +3479,10 @@ describe('Query', function() {
     const User = db.model('Test', userSchema);
 
     const original = await User.create({ token: 'rightToken' });
-    let doc = await User.findOne({ token: 'wrongToken', _bsontype: 'a' });
+
+    let doc = await User.findOne({ token: 'wrongToken', _bsontype: 'a' }).catch(err => {
+      console.log('Caught', err, err instanceof Error);
+    });
     assert.ok(!doc);
 
     doc = await User.findOne(original._id);

From d6f6ce8a282f012c05ba4a852d69898c023c36d2 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 13:32:34 -0400
Subject: [PATCH 14/28] test: temporarily skip strictQuery tests to see if they
 fix #9056 test failure

---
 .github/workflows/test.yml | 1 +
 test/query.test.js         | 4 +---
 test/schema.test.js        | 2 +-
 3 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6c2dc7af353..7fd517eb6d1 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -115,6 +115,7 @@ jobs:
         uses: denoland/setup-deno@v1
         with:
           deno-version: v1.25.x
+      - run: deno --version
       - run: npm install
       - name: Run Deno tests
         run: npm run test-deno
diff --git a/test/query.test.js b/test/query.test.js
index dec6c135e44..0058fdeb2af 100644
--- a/test/query.test.js
+++ b/test/query.test.js
@@ -3480,9 +3480,7 @@ describe('Query', function() {
 
     const original = await User.create({ token: 'rightToken' });
 
-    let doc = await User.findOne({ token: 'wrongToken', _bsontype: 'a' }).catch(err => {
-      console.log('Caught', err, err instanceof Error);
-    });
+    let doc = await User.findOne({ token: 'wrongToken', _bsontype: 'a' });
     assert.ok(!doc);
 
     doc = await User.findOne(original._id);
diff --git a/test/schema.test.js b/test/schema.test.js
index 0a994b87398..0ef15184f32 100644
--- a/test/schema.test.js
+++ b/test/schema.test.js
@@ -2442,7 +2442,7 @@ describe('schema', function() {
     assert.ok(!schema.virtuals.id);
   });
 
-  describe('mongoose.set(`strictQuery`, value); (gh-6658)', function() {
+  describe.skip('mongoose.set(`strictQuery`, value); (gh-6658)', function() {
     let strictQueryOriginalValue;
 
     this.beforeEach(() => strictQueryOriginalValue = mongoose.get('strictQuery'));

From 72124b88cc889918e904e4c769b751f382ad3df9 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 13:38:17 -0400
Subject: [PATCH 15/28] test: increase test timeout in deno and ensure
 strictQuery is set re: #9056

---
 test/deno.js        | 1 +
 test/query.test.js  | 2 +-
 test/schema.test.js | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/test/deno.js b/test/deno.js
index 672556569a7..3ab43861f14 100644
--- a/test/deno.js
+++ b/test/deno.js
@@ -12,6 +12,7 @@ const fs = require('fs');
 const path = require('path');
 
 const mocha = new Mocha({
+  timeout: 8000,
   ...(args.g ? { fgrep: '' + args.g } : {})
 });
 
diff --git a/test/query.test.js b/test/query.test.js
index 0058fdeb2af..3bc8a1484f9 100644
--- a/test/query.test.js
+++ b/test/query.test.js
@@ -3475,7 +3475,7 @@ describe('Query', function() {
   });
 
   it('query with top-level _bsontype (gh-8222) (gh-8268)', async function() {
-    const userSchema = Schema({ token: String });
+    const userSchema = Schema({ token: String }, { strictQuery: true });
     const User = db.model('Test', userSchema);
 
     const original = await User.create({ token: 'rightToken' });
diff --git a/test/schema.test.js b/test/schema.test.js
index 0ef15184f32..0a994b87398 100644
--- a/test/schema.test.js
+++ b/test/schema.test.js
@@ -2442,7 +2442,7 @@ describe('schema', function() {
     assert.ok(!schema.virtuals.id);
   });
 
-  describe.skip('mongoose.set(`strictQuery`, value); (gh-6658)', function() {
+  describe('mongoose.set(`strictQuery`, value); (gh-6658)', function() {
     let strictQueryOriginalValue;
 
     this.beforeEach(() => strictQueryOriginalValue = mongoose.get('strictQuery'));

From b3c31f180081be841dcbf4b27aeeb77adc5962c6 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 13:49:43 -0400
Subject: [PATCH 16/28] test: add back connection and index tests, skip because
 of dns issue #9056

---
 test/connection.test.js | 4 ++++
 test/deno.js            | 2 +-
 test/index.test.js      | 5 +++++
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/test/connection.test.js b/test/connection.test.js
index b6fad70087d..113d394d46b 100644
--- a/test/connection.test.js
+++ b/test/connection.test.js
@@ -886,6 +886,10 @@ describe('connections:', function() {
   });
 
   it('throws a MongooseServerSelectionError on server selection timeout (gh-8451)', () => {
+    if (typeof Deno !== 'undefined') {
+      // In Deno dns throws an uncatchable error here.
+      return this.skip();
+    }
     const opts = {
       serverSelectionTimeoutMS: 100
     };
diff --git a/test/deno.js b/test/deno.js
index 3ab43861f14..22bd3362b02 100644
--- a/test/deno.js
+++ b/test/deno.js
@@ -19,7 +19,7 @@ const mocha = new Mocha({
 const testDir = 'test';
 const files = fs.readdirSync(testDir);
 
-const ignoreFiles = new Set(['browser.test.js', 'connection.test.js', 'index.test.js']);
+const ignoreFiles = new Set(['browser.test.js']);
 
 for (const file of files) {
   if (!file.endsWith('.test.js') || ignoreFiles.has(file)) {
diff --git a/test/index.test.js b/test/index.test.js
index b67aee31763..683e8136b2f 100644
--- a/test/index.test.js
+++ b/test/index.test.js
@@ -845,6 +845,11 @@ describe('mongoose module:', function() {
     });
 
     it('connect with url doesnt cause unhandled rejection (gh-6997)', async function() {
+      if (typeof Deno !== 'undefined') {
+        // In Deno dns throws an uncatchable error here.
+        return this.skip();
+      }
+
       const m = new mongoose.Mongoose();
       const _options = Object.assign({}, options, { serverSelectionTimeoutMS: 100 });
       const error = await m.connect('mongodb://doesnotexist:27009/test', _options).then(() => null, err => err);

From 1fb268ef62c921c3f0090a9ba8f044f3daad627d Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 13:54:47 -0400
Subject: [PATCH 17/28] test: quick test fix re: #9046

---
 test/connection.test.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/connection.test.js b/test/connection.test.js
index 113d394d46b..02779f18767 100644
--- a/test/connection.test.js
+++ b/test/connection.test.js
@@ -885,7 +885,7 @@ describe('connections:', function() {
     return Model.create({ name: 'test' });
   });
 
-  it('throws a MongooseServerSelectionError on server selection timeout (gh-8451)', () => {
+  it('throws a MongooseServerSelectionError on server selection timeout (gh-8451)', function() {
     if (typeof Deno !== 'undefined') {
       // In Deno dns throws an uncatchable error here.
       return this.skip();

From 17e28318ccedf8c0a9699c74d200ad4539eb8f3d Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 5 Sep 2022 13:59:54 -0400
Subject: [PATCH 18/28] test: correctly clean up model re: #9056

---
 test/connection.test.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test/connection.test.js b/test/connection.test.js
index 02779f18767..d1edc428df1 100644
--- a/test/connection.test.js
+++ b/test/connection.test.js
@@ -271,6 +271,7 @@ describe('connections:', function() {
     });
 
     it('allows passing a schema', function() {
+      mongoose.deleteModel(/Test/);
       const MyModel = mongoose.model('Test', new Schema({
         name: String
       }));

From 66d8cad8a29e86e29f9b0d8b3dcdd59d0d9ab25e Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 3 Oct 2022 16:24:53 -0400
Subject: [PATCH 19/28] test: proof of concept for running Mongoose tests
 without --unstable

---
 package.json |  2 +-
 test/deno.js | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/package.json b/package.json
index c70afc91d6c..40e97ca9a10 100644
--- a/package.json
+++ b/package.json
@@ -94,7 +94,7 @@
     "release-legacy": "git pull origin 5.x && git push origin 5.x --tags && npm publish --tag legacy",
     "mongo": "node ./tools/repl.js",
     "test": "mocha --exit ./test/*.test.js",
-    "test-deno": "deno run --allow-env --allow-read --allow-net --allow-run --unstable ./test/deno.js",
+    "test-deno": "deno run --allow-env --allow-read --allow-net --allow-run ./test/deno.js",
     "test-rs": "START_REPLICA_SET=1 mocha --timeout 30000 --exit ./test/*.test.js",
     "test-tsd": "node ./test/types/check-types-filename && tsd",
     "tdd": "mocha ./test/*.test.js --inspect --watch --recursive --watch-files ./**/*.{js,ts}",
diff --git a/test/deno.js b/test/deno.js
index 22bd3362b02..9a0a9423b4d 100644
--- a/test/deno.js
+++ b/test/deno.js
@@ -2,11 +2,23 @@
 
 import { createRequire } from "https://deno.land/std/node/module.ts";
 
+// Workaround for Mocha getting terminal width, which currently requires `--unstable`
+Object.defineProperty(process.stdout, 'getWindowSize', {
+  value: function() {
+    return [75, 40];
+  }
+});
+
 import { parse } from "https://deno.land/std/flags/mod.ts"
 const args = parse(Deno.args);
 
 const require = createRequire(import.meta.url);
 
+// Workaround for MongoDB getting the current os release, which currently requires `--unstable`
+require('os').release = function() {
+  return 'deno test';
+};
+
 const Mocha = require('mocha');
 const fs = require('fs');
 const path = require('path');

From cdc824dac2f0bfb1abb368f814e166b5d08b455f Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 3 Oct 2022 16:35:45 -0400
Subject: [PATCH 20/28] chore: test with deno v1.26.x

---
 .github/workflows/test.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0df7c1b4686..c46003da46f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -109,7 +109,7 @@ jobs:
       - name: Setup Deno
         uses: denoland/setup-deno@v1
         with:
-          deno-version: v1.25.x
+          deno-version: v1.26.x
       - run: deno --version
       - run: npm install
       - name: Run Deno tests

From 72bf47b3025da5c1d384368580a15749b0f433bd Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 3 Oct 2022 16:51:00 -0400
Subject: [PATCH 21/28] test: add missing test files to deno

---
 test/deno.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/deno.js b/test/deno.js
index 9a0a9423b4d..00382224731 100644
--- a/test/deno.js
+++ b/test/deno.js
@@ -29,7 +29,9 @@ const mocha = new Mocha({
 });
 
 const testDir = 'test';
-const files = fs.readdirSync(testDir);
+const files = fs.readdirSync(testDir).
+  concat(fs.readdirSync(path.join(testDir, 'docs')).map(file => path.join('docs', file))).
+  concat(fs.readdirSync(path.join(testDir, 'helpers')).map(file => path.join('helpers', file)));
 
 const ignoreFiles = new Set(['browser.test.js']);
 

From 759e47d69dce73582626f86bdf65c261a5dfa111 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Wed, 5 Oct 2022 16:57:57 -0400
Subject: [PATCH 22/28] docs: add deno instructions and badges to README

---
 README.md | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 60da3ccde9f..0cf93d883f8 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,11 @@
 # Mongoose
 
-Mongoose is a [MongoDB](https://www.mongodb.org/) object modeling tool designed to work in an asynchronous environment. Mongoose supports both promises and callbacks.
+Mongoose is a [MongoDB](https://www.mongodb.org/) object modeling tool designed to work in an asynchronous environment. Mongoose supports [Node.js](https://nodejs.org/en/) and [Deno](https://deno.land/) (beta).
 
-[![Slack Status](https://img.shields.io/badge/slack-mongoosejsteam-34D058.svg?logo=slack )](https://mongoosejsteam.slack.com)
 [![Build Status](https://github.com/Automattic/mongoose/workflows/Test/badge.svg)](https://github.com/Automattic/mongoose)
 [![NPM version](https://badge.fury.io/js/mongoose.svg)](http://badge.fury.io/js/mongoose)
+[![Deno version](https://deno.land/badge/mongoose/version)](https://deno.land/x/mongoose)
+[![Deno popularity](https://deno.land/badge/mongoose/popularity)](https://deno.land/x/mongoose)
 
 [![npm](https://nodei.co/npm/mongoose.png)](https://www.npmjs.com/package/mongoose)
 
@@ -45,6 +46,8 @@ First install [Node.js](http://nodejs.org/) and [MongoDB](https://www.mongodb.or
 $ npm install mongoose
 ```
 
+Mongoose 6.7.0 also includes beta support for [Deno](https://deno.land/).
+
 ## Importing
 
 ```javascript
@@ -55,6 +58,15 @@ const mongoose = require('mongoose');
 import mongoose from 'mongoose';
 ```
 
+Or, using [Deno's `createRequire()` for CommonJS support](https://deno.land/std@0.113.0/node/README.md?source=#commonjs-modules-loading) as follows.
+
+```javascript
+import { createRequire } from 'https://deno.land/std/node/module.ts';
+const require = createRequire(import.meta.url);
+
+const mongoose = require('mongoose');
+```
+
 ## Mongoose for Enterprise
 
 Available as part of the Tidelift Subscription

From 872b9a3298d43ae4ff34a6d6b038fbb245c0f845 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Wed, 5 Oct 2022 17:01:42 -0400
Subject: [PATCH 23/28] docs: more info on required deno flags

---
 README.md | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 0cf93d883f8..427a967d98e 100644
--- a/README.md
+++ b/README.md
@@ -61,10 +61,19 @@ import mongoose from 'mongoose';
 Or, using [Deno's `createRequire()` for CommonJS support](https://deno.land/std@0.113.0/node/README.md?source=#commonjs-modules-loading) as follows.
 
 ```javascript
-import { createRequire } from 'https://deno.land/std/node/module.ts';
+import { createRequire } from "https://deno.land/std/node/module.ts";
 const require = createRequire(import.meta.url);
 
 const mongoose = require('mongoose');
+
+mongoose.connect('mongodb://localhost:27017/test')
+  .then(() => console.log('Connected!'));
+```
+
+You can then run the above script using the following.
+
+```
+deno run --allow-env --allow-read --allow-net mongoose-test.js
 ```
 
 ## Mongoose for Enterprise

From bd5e28ae92a37ec3afaf626f41d024b74613d75a Mon Sep 17 00:00:00 2001
From: Uzlopak <aras.abbasi@googlemail.com>
Date: Fri, 28 Oct 2022 20:44:20 +0200
Subject: [PATCH 24/28] Apply suggestions from code review

---
 .github/workflows/test.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c46003da46f..4b7c9ebaf07 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -109,7 +109,7 @@ jobs:
       - name: Setup Deno
         uses: denoland/setup-deno@v1
         with:
-          deno-version: v1.26.x
+          deno-version: v1.27.x
       - run: deno --version
       - run: npm install
       - name: Run Deno tests

From e4e26f15a64defb050632b7552b61b18d420bfd3 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 28 Nov 2022 12:11:55 -0500
Subject: [PATCH 25/28] Update README.md

Co-authored-by: Uzlopak <aras.abbasi@googlemail.com>
---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 427a967d98e..a159210081f 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ First install [Node.js](http://nodejs.org/) and [MongoDB](https://www.mongodb.or
 $ npm install mongoose
 ```
 
-Mongoose 6.7.0 also includes beta support for [Deno](https://deno.land/).
+Mongoose 6.8.0 also includes beta support for [Deno](https://deno.land/).
 
 ## Importing
 

From 0a3723232ac5c1a3580542e4c2935a2c78d67ca2 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 28 Nov 2022 12:21:01 -0500
Subject: [PATCH 26/28] fix: use deno 1.28 in tests, use --allow-sys, no more
 --unstable

---
 .github/workflows/test.yml | 2 +-
 README.md                  | 2 +-
 package.json               | 2 +-
 test/deno.js               | 5 -----
 4 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4e2c798def6..d362114672d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -109,7 +109,7 @@ jobs:
       - name: Setup Deno
         uses: denoland/setup-deno@v1
         with:
-          deno-version: v1.27.x
+          deno-version: v1.28.x
       - run: deno --version
       - run: npm install
       - name: Run Deno tests
diff --git a/README.md b/README.md
index a159210081f..0d27b549e46 100644
--- a/README.md
+++ b/README.md
@@ -73,7 +73,7 @@ mongoose.connect('mongodb://localhost:27017/test')
 You can then run the above script using the following.
 
 ```
-deno run --allow-env --allow-read --allow-net mongoose-test.js
+deno run --allow-net --allow-read --allow-sys --allow-env mongoose-test.js
 ```
 
 ## Mongoose for Enterprise
diff --git a/package.json b/package.json
index 4737725fd2b..5018f58c812 100644
--- a/package.json
+++ b/package.json
@@ -95,7 +95,7 @@
     "release-legacy": "git pull origin 5.x && git push origin 5.x --tags && npm publish --tag legacy",
     "mongo": "node ./tools/repl.js",
     "test": "mocha --exit ./test/*.test.js",
-    "test-deno": "deno run --allow-env --allow-read --allow-net --allow-run ./test/deno.js",
+    "test-deno": "deno run --allow-env --allow-read --allow-net --allow-run --allow-sys ./test/deno.js",
     "test-rs": "START_REPLICA_SET=1 mocha --timeout 30000 --exit ./test/*.test.js",
     "test-tsd": "node ./test/types/check-types-filename && tsd",
     "tdd": "mocha ./test/*.test.js --inspect --watch --recursive --watch-files ./**/*.{js,ts}",
diff --git a/test/deno.js b/test/deno.js
index 00382224731..922766f1b20 100644
--- a/test/deno.js
+++ b/test/deno.js
@@ -14,11 +14,6 @@ const args = parse(Deno.args);
 
 const require = createRequire(import.meta.url);
 
-// Workaround for MongoDB getting the current os release, which currently requires `--unstable`
-require('os').release = function() {
-  return 'deno test';
-};
-
 const Mocha = require('mocha');
 const fs = require('fs');
 const path = require('path');

From b41f2de5eeacb73fa34697784f4a346bc18e8e05 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 28 Nov 2022 12:27:56 -0500
Subject: [PATCH 27/28] test: clear data between query cursor tests

---
 test/query.cursor.test.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/test/query.cursor.test.js b/test/query.cursor.test.js
index 575d06e79b6..6f22c0eab4d 100644
--- a/test/query.cursor.test.js
+++ b/test/query.cursor.test.js
@@ -27,13 +27,14 @@ describe('QueryCursor', function() {
   afterEach(() => require('./util').clearTestData(db));
   afterEach(() => require('./util').stopRemainingOps(db));
 
-  beforeEach(function() {
+  beforeEach(async function() {
     const schema = new Schema({ name: String });
     schema.virtual('test').get(function() { return 'test'; });
 
     Model = db.model('Test', schema);
 
-    return Model.create({ name: 'Axl' }, { name: 'Slash' });
+    await Model.deleteMany({});
+    await Model.create({ name: 'Axl' }, { name: 'Slash' });
   });
 
   describe('#next()', function() {

From 68ec07d1c2cd76024480de816aad19065c862552 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 28 Nov 2022 12:57:38 -0500
Subject: [PATCH 28/28] quick note about alpha support for deno

---
 README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 0d27b549e46..10d443f45ab 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Mongoose
 
-Mongoose is a [MongoDB](https://www.mongodb.org/) object modeling tool designed to work in an asynchronous environment. Mongoose supports [Node.js](https://nodejs.org/en/) and [Deno](https://deno.land/) (beta).
+Mongoose is a [MongoDB](https://www.mongodb.org/) object modeling tool designed to work in an asynchronous environment. Mongoose supports [Node.js](https://nodejs.org/en/) and [Deno](https://deno.land/) (alpha).
 
 [![Build Status](https://github.com/Automattic/mongoose/workflows/Test/badge.svg)](https://github.com/Automattic/mongoose)
 [![NPM version](https://badge.fury.io/js/mongoose.svg)](http://badge.fury.io/js/mongoose)
@@ -46,7 +46,7 @@ First install [Node.js](http://nodejs.org/) and [MongoDB](https://www.mongodb.or
 $ npm install mongoose
 ```
 
-Mongoose 6.8.0 also includes beta support for [Deno](https://deno.land/).
+Mongoose 6.8.0 also includes alpha support for [Deno](https://deno.land/).
 
 ## Importing