From e9baa2cfc4b15dff2573d21645cbdb8eafe2501d Mon Sep 17 00:00:00 2001
From: Kevin Schmidt <kschmidt@caci.com>
Date: Tue, 25 Sep 2018 13:03:43 -0600
Subject: [PATCH] Fix TypeScript errors in ol/format/Feature

---
 src/ol/format/Feature.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/ol/format/Feature.js b/src/ol/format/Feature.js
index 43de34c49c..e3386d33b6 100644
--- a/src/ol/format/Feature.js
+++ b/src/ol/format/Feature.js
@@ -229,8 +229,9 @@ export function transformWithOptions(geometry, write, opt_options) {
   } else {
     transformed = geometry;
   }
-  if (write && opt_options && opt_options.decimals !== undefined) {
-    const power = Math.pow(10, opt_options.decimals);
+  if (write && opt_options && /** @type {WriteOptions} */ (opt_options).decimals !== undefined &&
+    transformed instanceof Geometry) {
+    const power = Math.pow(10, /** @type {WriteOptions} */ (opt_options).decimals);
     // if decimals option on write, round each coordinate appropriately
     /**
      * @param {Array<number>} coordinates Coordinates.