Remove Symbol

Summary: Remove Symbol use as it is not available on IE 11. Reviewed By: drarmstr Differential Revision: D25963011 fbshipit-source-id: 93e30978a299ba5e82c857ad77f609190b3469f7
facebookexperimental · Jan 20, 2021 · d27c800 · d27c800
1 parent 42a1e03
commit d27c800
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Showing 2 changed files with 6 additions and 3 deletions.
diff --git a/src/adt/Recoil_ArrayKeyedMap.js b/src/adt/Recoil_ArrayKeyedMap.js
@@ -15,8 +15,7 @@
  */
 'use strict';
 
-// eslint-disable-next-line fb-www/no-symbol
-const LEAF = Symbol('ArrayKeyedMap');
+const LEAF = {};
 
 const emptyMap = new Map();
 

diff --git a/src/util/Recoil_stableStringify.js b/src/util/Recoil_stableStringify.js
@@ -94,7 +94,11 @@ function stringify(x: mixed, opt: Options, key?: string): string {
   }
 
   // Anything else that is iterable serialize as an Array.
-  if (x[Symbol.iterator] != null && typeof x[Symbol.iterator] === 'function') {
+  if (
+    Symbol !== undefined &&
+    x[Symbol.iterator] != null &&
+    typeof x[Symbol.iterator] === 'function'
+  ) {
     // flowlint-next-line unclear-type: off
     return stringify(Array.from((x: any)), opt, key);
   }