From 01a7e2182f69ddd78a3e6a2b251dc85d7130986b Mon Sep 17 00:00:00 2001
From: Steven <srjames@lightstep.com>
Date: Tue, 18 Aug 2020 20:25:17 -0400
Subject: [PATCH] fix: add check for isValid

---
 packages/opentelemetry-tracing/src/Tracer.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/opentelemetry-tracing/src/Tracer.ts b/packages/opentelemetry-tracing/src/Tracer.ts
index 700fe976269..d5c1365ac8d 100644
--- a/packages/opentelemetry-tracing/src/Tracer.ts
+++ b/packages/opentelemetry-tracing/src/Tracer.ts
@@ -72,7 +72,7 @@ export class Tracer implements api.Tracer {
     const spanId = this._idGenerator.generateSpanId();
     let traceId;
     let traceState;
-    if (!parentContext || !parentContext?.isValid()) {
+    if (!parentContext || !parentContext.isValid || !parentContext.isValid()) {
       // New root span.
       traceId = this._idGenerator.generateTraceId();
     } else {