IE10 does not support Map (#325) (#326)

xfields · timche · commit 2998518d1236 · 2018-11-01T12:35:38.000Z
diff --git a/src/utils/isMap.js b/src/utils/isMap.js
@@ -1 +1 @@
-export default value => value instanceof Map;
+export default value => typeof Map !== 'undefined' && value instanceof Map;

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-export default value => value instanceof Map;`
	`1`	`+export default value => typeof Map !== 'undefined' && value instanceof Map;`