initial experiment with async fn support

1 files changed, 20 insertions, 0 deletions

diff --git a/mocha_test/asyncFunctions.js b/mocha_test/asyncFunctions.js
new file mode 100644
index 0000000..67e1b16
--- /dev/null
+++ b/mocha_test/asyncFunctions.js
@@ -0,0 +1,20 @@
+describe('async function support', function () {
+    this.timeout(100);
+
+    var supportsAsync;
+    var supportsSymbol = typeof Symbol !== 'undefined';
+    try {
+        /* eslint no-eval:0 */
+        var fn = eval('(async function() {})')
+        supportsAsync = supportsSymbol &&
+            fn[Symbol.toStringTag] === 'AsyncFunction';
+    } catch (e) {
+        supportsAsync = false;
+    }
+
+    if (supportsAsync) {
+        require('./es2017/asyncFunctions.js')();
+    } else {
+        it('should not test async functions in this environment');
+    }
+});