From 541281b9f32881d0a7b12973c3aded57b7f0b95d Mon Sep 17 00:00:00 2001
From: Mathias Bynens <mathias@qiwi.be>
Date: Thu, 30 Apr 2020 12:58:51 +0200
Subject: [PATCH] chore: fix doclint issues (#5784)

---
 CONTRIBUTING.md                             | 1 +
 utils/doclint/check_public_api/JSBuilder.js | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 2ec11d923d51b..77200b8a23a64 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -4,6 +4,7 @@
   * [Getting Code](#getting-code)
   * [Code reviews](#code-reviews)
   * [Code Style](#code-style)
+  * [TypeScript guidelines](#typescript-guidelines)
   * [API guidelines](#api-guidelines)
   * [Commit Messages](#commit-messages)
   * [Writing Documentation](#writing-documentation)
diff --git a/utils/doclint/check_public_api/JSBuilder.js b/utils/doclint/check_public_api/JSBuilder.js
index acf6d983f6f04..93d2ac579cdfa 100644
--- a/utils/doclint/check_public_api/JSBuilder.js
+++ b/utils/doclint/check_public_api/JSBuilder.js
@@ -189,7 +189,7 @@ function checkSources(sources) {
    * @return {boolean}
    */
   function symbolHasPrivateModifier(symbol) {
-    const modifiers = symbol.valueDeclaration.modifiers || [];
+    const modifiers = symbol.valueDeclaration && symbol.valueDeclaration.modifiers || [];
     return modifiers.some(modifier => modifier.kind === ts.SyntaxKind.PrivateKeyword);
   }