try es2019

schmidt-sebastian · schmidt-sebastian · commit 45e368207309 · 2020-03-29T21:18:09.000-07:00
diff --git a/packages/firestore/rollup.config.js b/packages/firestore/rollup.config.js
@@ -117,7 +117,7 @@ const es2017BuildPlugins = [
     typescript,
     tsconfigOverride: {
       compilerOptions: {
-        target: 'es2017'
+        target: 'es2019'
       }
     },
     cacheRoot: './.cache/browser/',
