Add performance.now (#1633)

1 files changed, 3 insertions, 0 deletions

diff --git a/js/globals.ts b/js/globals.ts
index e45aee9e2..9e7d20bcc 100644
--- a/js/globals.ts
+++ b/js/globals.ts
@@ -21,6 +21,7 @@ import * as timers from "./timers";
 import * as url from "./url";
 import * as urlSearchParams from "./url_search_params";
 import * as workers from "./workers";
+import * as performanceUtil from "./performance";
 
 // These imports are not exposed and therefore are fine to just import the
 // symbols required.
@@ -93,4 +94,6 @@ export type TextEncoder = textEncoding.TextEncoder;
 window.TextDecoder = textEncoding.TextDecoder;
 export type TextDecoder = textEncoding.TextDecoder;
 
+window.performance = new performanceUtil.Performance();
+
 window.workerMain = workers.workerMain;