Don't test Map and Set unless Array.from is defined.

benjamn · Feb 15, 2016 · d25782b · d25782b
1 parent 2b509df
commit d25782b
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diff --git a/custom.js b/custom.js
@@ -61,6 +61,7 @@ arson.registerType("RegExp", {
 });
 
 typeof Set === "function" &&
+typeof Array.from === "function" &&
 arson.registerType("Set", {
  deconstruct: function (set) {
  if (toString.call(set) === setTag) {
@@ -78,6 +79,7 @@ arson.registerType("Set", {
 });
 
 typeof Map === "function" &&
+typeof Array.from === "function" &&
 arson.registerType("Map", {
  deconstruct: function (map) {
  if (toString.call(map) === mapTag) {

diff --git a/test/tests.js b/test/tests.js
@@ -62,6 +62,7 @@ describe("encoding and decoding", function () {
  });
 
  typeof Map === "function" &&
+ typeof Array.from === "function" &&
  it("should work with Map objects", function () {
  var m1 = new Map;
  var value = { foo: 42 };
@@ -75,6 +76,7 @@ describe("encoding and decoding", function () {
  });
 
  typeof Set === "function" &&
+ typeof Array.from === "function" &&
  it("should work with Set objects", function () {
  var s1 = new Set;
  s1.add(s1);