From e6404cb24a06eb141e81945790c3c10589c229cd Mon Sep 17 00:00:00 2001
From: Nathan Reese <reese.nathan@gmail.com>
Date: Thu, 21 Nov 2019 09:10:36 -0700
Subject: [PATCH] [Maps] fix tooltips for geojson source (#51251)

---
 .../client_file_source/geojson_file_source.js     | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/x-pack/legacy/plugins/maps/public/layers/sources/client_file_source/geojson_file_source.js b/x-pack/legacy/plugins/maps/public/layers/sources/client_file_source/geojson_file_source.js
index 6c298352cc03a..11a02d58a9198 100644
--- a/x-pack/legacy/plugins/maps/public/layers/sources/client_file_source/geojson_file_source.js
+++ b/x-pack/legacy/plugins/maps/public/layers/sources/client_file_source/geojson_file_source.js
@@ -9,7 +9,8 @@ import React from 'react';
 import {
   ES_GEO_FIELD_TYPE,
   GEOJSON_FILE,
-  ES_SIZE_LIMIT
+  ES_SIZE_LIMIT,
+  FEATURE_ID_PROPERTY_NAME
 } from '../../../../common/constants';
 import { ClientFileCreateSourceEditor } from './create_client_file_source_editor';
 import { ESSearchSource } from '../es_search_source';
@@ -136,12 +137,16 @@ export class GeojsonFileSource extends AbstractVectorSource {
   }
 
   async getGeoJsonWithMeta() {
-    const copiedPropsFeatures = this._descriptor.__featureCollection.features
-      .map(feature => ({
+    const copiedPropsFeatures = this._descriptor.__featureCollection.features.map((feature, index) => {
+      const properties = feature.properties ? { ...feature.properties } : {};
+      properties[FEATURE_ID_PROPERTY_NAME] = index;
+      return {
         type: 'Feature',
         geometry: feature.geometry,
-        properties: feature.properties ? { ...feature.properties } : {}
-      }));
+        properties,
+      };
+    });
+
     return {
       data: {
         type: 'FeatureCollection',