FIx #9510: EsriJSON readGeometry should not mutate input

2019-05-30 18:43:22 +02:00
parent 5222a0ffd6
commit a8e31dddee
2 changed files with 19 additions and 2 deletions
--- a/src/ol/format/EsriJSON.js
+++ b/src/ol/format/EsriJSON.js
@@ -256,10 +256,10 @@ function readGeometry(object, opt_options) {
    const rings = convertRings(esriJSONPolygon.rings, layout);
    if (rings.length === 1) {
      type = GeometryType.POLYGON;
-      object['rings'] = rings[0];
+      object = Object.assign({}, object, {['rings']: rings[0]});
    } else {
      type = GeometryType.MULTI_POLYGON;
-      object['rings'] = rings;
+      object = Object.assign({}, object, {['rings']: rings});
    }
  }
  const geometryReader = GEOMETRY_READERS[type];