fix(model): filter applying static hooks by default if static name conflicts with mongoose middleware

lib/constants.js

@@ -44,3 +44,30 @@ const aggregateMiddlewareFunctions = [
 ];
 
 exports.aggregateMiddlewareFunctions = aggregateMiddlewareFunctions;
+
+/*!
+ * ignore
+ */
+
+const modelMiddlewareFunctions = [
+  'bulkWrite',
+  'createCollection',
+  'insertMany'
+];
+
+exports.modelMiddlewareFunctions = modelMiddlewareFunctions;
+
+/*!
+ * ignore
+ */
+
+const documentMiddlewareFunctions = [
+  'validate',
+  'save',
+  'remove',
+  'updateOne',
+  'deleteOne',
+  'init'
+];
+
+exports.documentMiddlewareFunctions = documentMiddlewareFunctions;

lib/helpers/model/applyStaticHooks.js

@@ -1,21 +1,28 @@
 'use strict';
 
 const promiseOrCallback = require('../promiseOrCallback');
-const { queryMiddlewareFunctions, aggregateMiddlewareFunctions } = require('../../constants');
+const { queryMiddlewareFunctions, aggregateMiddlewareFunctions, modelMiddlewareFunctions, documentMiddlewareFunctions } = require('../../constants');
 
-const middlewareFunctions = [
-  ...queryMiddlewareFunctions,
-  ...aggregateMiddlewareFunctions
-];
+const middlewareFunctions = Array.from(
+  new Set([
+    ...queryMiddlewareFunctions,
+    ...aggregateMiddlewareFunctions,
+    ...modelMiddlewareFunctions,
+    ...documentMiddlewareFunctions
+  ])  
+);
 
 module.exports = function applyStaticHooks(model, hooks, statics) {
   const kareemOptions = {
     useErrorHandlers: true,
     numCallbackParams: 1
   };
 
+  model.$__insertMany = hooks.createWrapper('insertMany',
+    model.$__insertMany, model, kareemOptions);
+
   hooks = hooks.filter(hook => {
-    // If the custom static overwrites an existing query/aggregate middleware, don't apply
+    // If the custom static overwrites an existing middleware, don't apply
     // middleware to it by default. This avoids a potential backwards breaking
     // change with plugins like `mongoose-delete` that use statics to overwrite
     // built-in Mongoose functions.
@@ -25,9 +32,6 @@
     return hook.model !== false;
   });
 
-  model.$__insertMany = hooks.createWrapper('insertMany',
-    model.$__insertMany, model, kareemOptions);
-
   for (const key of Object.keys(statics)) {
     if (hooks.hasHooks(key)) {
       const original = model[key];

test/model.test.js

@@ -5891,6 +5891,54 @@ describe('Model', function() {
     assert.equal(called, 1);
   });
 
+  it('custom statics that overwrite model functions dont get hooks by default', async function() {
+
+    const schema = new Schema({ name: String });
+
+    schema.statics.insertMany = function(docs) {
+      return model.insertMany.apply(this, [docs]);
+    };
+
+    let called = 0;
+    schema.pre('insertMany', function(next) {
+      ++called;
+      next();
+    });
+    const Model = db.model('Test', schema);
+
+    const res = await Model.insertMany([
+      { name: 'foo' },
+      { name: 'boo' }
+    ]);
+
+    assert.ok(res[0].name);
+    assert.ok(res[1].name);
+    assert.equal(called, 1);
+  });
+
+  it('custom statics that overwrite document functions dont get hooks by default', async function() {
+
+    const schema = new Schema({ name: String });
+
+    schema.statics.save = function() {
+      return 'foo';
+    };
+
+    let called = 0;
+    schema.pre('save', function(next) {
+      ++called;
+      next();
+    });
+
+    const Model = db.model('Test', schema);
+
+    const doc = await Model.save();
+
+    assert.ok(doc);
+    assert.equal(doc, 'foo');
+    assert.equal(called, 0);
+  });
+
   it('error handling middleware passes saved doc (gh-7832)', async function() {
     const schema = new Schema({ _id: Number });