Merge branch 'master' into 8.1

Author: vkarpov15

docs/compatibility.md

@@ -20,7 +20,7 @@ Below are the [semver](http://semver.org/) ranges representing which versions of
 | :------------: | :-------------------------------------: |
 |     `7.x`      |            `^7.4.0 \| ^8.0.0`           |
 |     `6.x`      |      `^6.5.0 \| ^7.0.0 \| ^8.0.0`       |
-|     `5.x`      | `^5.13.0` | `^6.0.0 \| ^7.0.0 \| ^8.0.0`|
+|     `5.x`      | `^5.13.0` \| `^6.0.0 \| ^7.0.0 \| ^8.0.0`|
 |    `4.4.x`     | `^5.10.0 \| ^6.0.0 \| ^7.0.0 \| ^8.0.0` |
 |    `4.2.x`     | `^5.7.0 \| ^6.0.0 \| ^7.0.0 \| ^8.0.0`  |
 |    `4.0.x`     | `^5.2.0 \| ^6.0.0 \| ^7.0.0 \| ^8.0.0`  |

lib/model.js

@@ -1760,9 +1760,7 @@ Model.listIndexes = async function listIndexes() {
  *
  * #### Example:
  *
- *     Event.ensureIndexes(function (err) {
- *       if (err) return handleError(err);
- *     });
+ *     await Event.ensureIndexes();
  *
  * After completion, an `index` event is emitted on this `Model` passing an error if one occurred.
  *
@@ -1773,7 +1771,7 @@ Model.listIndexes = async function listIndexes() {
  *
  *     Event.on('index', function (err) {
  *       if (err) console.error(err); // error occurred during index creation
- *     })
+ *     });
  *
  * _NOTE: It is not recommended that you run this in production. Index creation may impact database performance depending on your load. Use with caution._
  *