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node_modules/is-bluebird/lib/index.js

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+// --------------------
+// is-bluebird module
+// --------------------
+
+// exports
+
+/**
+ * Identifies whether input is a bluebird promise.
+ * @param {*} promise - Input to be tested
+ * @returns {boolean} - true if is a bluebird promise, false if not
+ */
+var isBluebird = function(promise) {
+    return isObject(promise) && isBluebird.ctor(promise.constructor);
+};
+
+/**
+ * Identifies whether input is a bluebird promise constructor.
+ * @param {*} Promise - Input to be tested
+ * @returns {boolean} - true if is bluebird promise constructor, false if not
+ */
+isBluebird.ctor = function(Promise) {
+    return typeof Promise == 'function' && !!Promise.prototype && typeof Promise.prototype._addCallbacks == 'function';
+};
+
+/**
+ * Identifies whether input is a bluebird v2 promise.
+ * @param {*} promise - Input to be tested
+ * @returns {boolean} - true if is a bluebird v2 promise, false if not
+ */
+isBluebird.v2 = function(promise) {
+    return isObject(promise) && isBluebird.v2.ctor(promise.constructor);
+};
+
+/**
+ * Identifies whether input is bluebird v2 promise constructor.
+ * @alias isBluebird.ctor.v2
+ *
+ * @param {*} promise - Input to be tested
+ * @returns {boolean} - true if is a bluebird v2 promise, false if not
+ */
+isBluebird.v2.ctor = function(Promise) {
+    return isBluebird.ctor(Promise) && Promise.prototype._addCallbacks.length == 6;
+};
+
+isBluebird.ctor.v2 = isBluebird.v2.ctor;
+
+/**
+ * Identifies whether input is a bluebird v3 promise.
+ * @param {*} promise - Input to be tested
+ * @returns {boolean} - true if is a bluebird v3 promise, false if not
+ */
+isBluebird.v3 = function(promise) {
+    return isObject(promise) && isBluebird.v3.ctor(promise.constructor);
+};
+
+/**
+ * Identifies whether input is bluebird v3 promise constructor.
+ * @alias isBluebird.ctor.v3
+ *
+ * @param {*} promise - Input to be tested
+ * @returns {boolean} - true if is a bluebird v3 promise, false if not
+ */
+isBluebird.v3.ctor = function(Promise) {
+    return isBluebird.ctor(Promise) && Promise.prototype._addCallbacks.length == 5;
+};
+
+isBluebird.ctor.v3 = isBluebird.v3.ctor;
+
+/**
+ * Check if input is an object.
+ * @param {*} obj - Input to be tested
+ * @returns {boolean} - true if is an object, false if not
+ */
+function isObject(obj) {
+    return !!obj && typeof obj == 'object';
+}
+
+// export isBluebird
+module.exports = isBluebird;