chushihua

node_modules/ext/thenable_/finally.js

@@ -0,0 +1,24 @@
+"use strict";
+
+var ensurePlainFunction = require("type/plain-function/ensure")
+  , isThenable          = require("type/thenable/is")
+  , ensureThenable      = require("type/thenable/ensure");
+
+var resolveCallback = function (callback, next) {
+	var callbackResult = callback();
+	if (!isThenable(callbackResult)) return next();
+	return callbackResult.then(next);
+};
+
+module.exports = function (callback) {
+	ensureThenable(this);
+	ensurePlainFunction(callback);
+	return this.then(
+		function (result) {
+			return resolveCallback(callback, function () { return result; });
+		},
+		function (error) {
+			return resolveCallback(callback, function () { throw error; });
+		}
+	);
+};