From 446070160ae863a0e121e56344437a1535042cb5 Mon Sep 17 00:00:00 2001
From: Jeff Frankl <jfrankl@azavea.com>
Date: Mon, 18 Feb 2019 09:17:06 -0500
Subject: [PATCH] Fix geojson-stream integration

When determining labels, push each label to an empty array, which gets passed back to the through function. This allows us to use  multiple times when there are multiple labels returned from a single feature.
---
 bin/geojson-polygon-labels | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/bin/geojson-polygon-labels b/bin/geojson-polygon-labels
index f7a401f..0db69f8 100755
--- a/bin/geojson-polygon-labels
+++ b/bin/geojson-polygon-labels
@@ -94,7 +94,9 @@ if (includeMinzoom && typeof includeMinzoom === "string" && includeMinzoom.split
 function polylabelStream() {
     return Combiner(geojsonStream.parse(),
         through(function (feature, callback) {
-            this.queue(labelFeature(feature));
+            labelFeature(feature).forEach((feature) => {
+                this.queue(feature);
+            })
         }),
         geojsonStream.stringify());
 }
@@ -106,6 +108,7 @@ inputStream
 
 function labelFeature(inputFeature) {
     featureCount++;
+    let labeledFeatures = [];
     process.stderr.write('...' + featureCount + "\r");
 
     if (inputFeature.geometry) {
@@ -183,8 +186,7 @@ function labelFeature(inputFeature) {
                 if (tippecanoeProperties) {
                     labelFeature.tippecanoe = tippecanoeProperties;
                 }
-                console.log(labelFeature)
-                return labelFeature;
+                labeledFeatures.push(labelFeature);
             }else{
                 if (feature.geometry) {
                     // warn the users that non Polygon features are ignored
@@ -197,6 +199,8 @@ function labelFeature(inputFeature) {
             }
         });
     }
+
+    return labeledFeatures;
 }
 
 function areaToZoom(area, min, max) {