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-rw-r--r--src/timer.ts2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/timer.ts b/src/timer.ts
index 2fc2ade04..dd67dbd29 100644
--- a/src/timer.ts
+++ b/src/timer.ts
@@ -50,7 +50,7 @@ class TimeoutHandle {
* Get a performance counter in milliseconds.
*/
export let performanceNow = (() => {
- if (typeof "process" !== "undefined") {
+ if (typeof process !== "undefined" && process.hrtime) {
return () => {
const t = process.hrtime();
return t[0] * 1e9 + t[1];