From 0f145548a8c26f7761d33d274e5988e69ce2251e Mon Sep 17 00:00:00 2001
From: JustinChou <jackychou315@gmail.com>
Date: Wed, 1 Aug 2018 13:05:01 +0800
Subject: [PATCH] The argument of followsFrom function should support Span
 (#109)

* Fix params type error.

The followsFrom function should have alternative args type of `Span`.
---
 src/functions.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/functions.ts b/src/functions.ts
index 64b5a3a..862dd28 100644
--- a/src/functions.ts
+++ b/src/functions.ts
@@ -25,7 +25,7 @@ export function childOf(spanContext: SpanContext | Span): Reference {
  *        reference.
  * @return a REFERENCE_FOLLOWS_FROM reference pointing to `spanContext`
  */
-export function followsFrom(spanContext: SpanContext): Reference {
+export function followsFrom(spanContext: SpanContext | Span): Reference {
     // Allow the user to pass a Span instead of a SpanContext
     if (spanContext instanceof Span) {
         spanContext = spanContext.context();