Add typeof guard to performance variable (#986)

* Fixes #768 * Fix comment and add changelog
maplibre · Feb 11, 2022 · 9d600e6 · 9d600e6
1 parent 8ff0907
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -3,7 +3,7 @@
 ### Features and improvements
 
 - Default compact attribution to be open by default to comply with OpenSteetMap Attribution Guidelines (#795)
-- Export `Source` classes (`GeoJSONSource` etc.) declarations. ([#801](https://github.com/maplibre/maplibre-gl-js/issues/801))
+- Export `Source` classes (`GeoJSONSource` etc.) declarations. (#801)
 - Make `AJAXError` public so error HTTP responses can be handled differently from other errors.
 - *...Add new stuff here...*
 
@@ -12,6 +12,7 @@
 - Fix compact attribution button showing when attribution is blank (#795)
 - Fix error mismatched image size for CJK characters (#718)
 - Fire `dataabort` and `sourcedataabort` events when a tile request is aborted (#794)
+- Fix NextJs `performance` undefined (#768)
 - *...Add new stuff here...*
 
 ## 2.1.1

diff --git a/src/util/browser.ts b/src/util/browser.ts
@@ -1,6 +1,6 @@
 import type {Cancelable} from '../types/cancelable';
 
-const now = performance && performance.now ?
+const now = typeof performance !== 'undefined' && performance && performance.now ?
     performance.now.bind(performance) :
     Date.now.bind(Date);