fix: add SUPPRESS_JEST_WARNINGS environment variable to silence jest warnings

Fix #13373

Author: vkarpov15

lib/helpers/printJestWarning.js

@@ -2,16 +2,18 @@
 
 const utils = require('../utils');
 
-if (typeof jest !== 'undefined' && typeof window !== 'undefined') {
-  utils.warn('Mongoose: looks like you\'re trying to test a Mongoose app ' +
-    'with Jest\'s default jsdom test environment. Please make sure you read ' +
-    'Mongoose\'s docs on configuring Jest to test Node.js apps: ' +
-    'https://mongoosejs.com/docs/jest.html');
-}
+if (typeof jest !== 'undefined' && !process.env.SUPPRESS_JEST_WARNINGS) {
+  if (typeof window !== 'undefined') {
+    utils.warn('Mongoose: looks like you\'re trying to test a Mongoose app ' +
+      'with Jest\'s default jsdom test environment. Please make sure you read ' +
+      'Mongoose\'s docs on configuring Jest to test Node.js apps: ' +
+      'https://mongoosejs.com/docs/jest.html');
+  }
 
-if (typeof jest !== 'undefined' && setTimeout.clock != null && typeof setTimeout.clock.Date === 'function') {
-  utils.warn('Mongoose: looks like you\'re trying to test a Mongoose app ' +
-    'with Jest\'s mock timers enabled. Please make sure you read ' +
-    'Mongoose\'s docs on configuring Jest to test Node.js apps: ' +
-    'https://mongoosejs.com/docs/jest.html');
+  if (setTimeout.clock != null && typeof setTimeout.clock.Date === 'function') {
+    utils.warn('Mongoose: looks like you\'re trying to test a Mongoose app ' +
+      'with Jest\'s mock timers enabled. Please make sure you read ' +
+      'Mongoose\'s docs on configuring Jest to test Node.js apps: ' +
+      'https://mongoosejs.com/docs/jest.html');
+  }
 }