From e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d Mon Sep 17 00:00:00 2001
From: Piotr Russ <mail@pruss.it>
Date: Mon, 16 Nov 2020 00:10:28 +0100
Subject: api, login, auth

---
 node_modules/es-abstract/2019/IsPromise.js | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 node_modules/es-abstract/2019/IsPromise.js

(limited to 'node_modules/es-abstract/2019/IsPromise.js')

diff --git a/node_modules/es-abstract/2019/IsPromise.js b/node_modules/es-abstract/2019/IsPromise.js
new file mode 100644
index 0000000..e8e92a2
--- /dev/null
+++ b/node_modules/es-abstract/2019/IsPromise.js
@@ -0,0 +1,24 @@
+'use strict';
+
+var callBound = require('../helpers/callBound');
+
+var $PromiseThen = callBound('Promise.prototype.then', true);
+
+var Type = require('./Type');
+
+// https://www.ecma-international.org/ecma-262/6.0/#sec-ispromise
+
+module.exports = function IsPromise(x) {
+	if (Type(x) !== 'Object') {
+		return false;
+	}
+	if (!$PromiseThen) { // Promises are not supported
+		return false;
+	}
+	try {
+		$PromiseThen(x); // throws if not a promise
+	} catch (e) {
+		return false;
+	}
+	return true;
+};
-- 
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