fix flow

mapbox · Feb 28, 2019 · 30cb3fb · 30cb3fb
1 parent ebee883
commit 30cb3fb
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/render/draw_debug.js b/src/render/draw_debug.js
@@ -40,7 +40,9 @@ function drawDebugTile(painter, sourceCache, coord) {
         debugUniformValues(posMatrix, Color.red), id,
         painter.debugBuffer, painter.tileBorderIndexBuffer, painter.debugSegments);
 
-    const tileSizeKb = Math.floor(sourceCache.getTileByID(coord.key).latestRawTileData && sourceCache.getTileByID(coord.key).latestRawTileData.byteLength / 1024);
+    const tileRawData = sourceCache.getTileByID(coord.key).latestRawTileData;
+    const tileByteLength = (tileRawData && tileRawData.byteLength) || 0;
+    const tileSizeKb = Math.floor(tileByteLength / 1024);
     const vertices = createTextVertices(`${coord.toString()} ${tileSizeKb}kb`, 50, 200, 5);
     const debugTextArray = new PosArray();
     const debugTextIndices = new LineIndexArray();