update

node_modules/promise/domains/node-extensions.js

@@ -0,0 +1,130 @@
+'use strict';
+
+// This file contains then/promise specific extensions that are only useful
+// for node.js interop
+
+var Promise = require('./core.js');
+var asap = require('asap');
+
+module.exports = Promise;
+
+/* Static Functions */
+
+Promise.denodeify = function (fn, argumentCount) {
+  if (
+    typeof argumentCount === 'number' && argumentCount !== Infinity
+  ) {
+    return denodeifyWithCount(fn, argumentCount);
+  } else {
+    return denodeifyWithoutCount(fn);
+  }
+};
+
+var callbackFn = (
+  'function (err, res) {' +
+  'if (err) { rj(err); } else { rs(res); }' +
+  '}'
+);
+function denodeifyWithCount(fn, argumentCount) {
+  var args = [];
+  for (var i = 0; i < argumentCount; i++) {
+    args.push('a' + i);
+  }
+  var body = [
+    'return function (' + args.join(',') + ') {',
+    'var self = this;',
+    'return new Promise(function (rs, rj) {',
+    'var res = fn.call(',
+    ['self'].concat(args).concat([callbackFn]).join(','),
+    ');',
+    'if (res &&',
+    '(typeof res === "object" || typeof res === "function") &&',
+    'typeof res.then === "function"',
+    ') {rs(res);}',
+    '});',
+    '};'
+  ].join('');
+  return Function(['Promise', 'fn'], body)(Promise, fn);
+}
+function denodeifyWithoutCount(fn) {
+  var fnLength = Math.max(fn.length - 1, 3);
+  var args = [];
+  for (var i = 0; i < fnLength; i++) {
+    args.push('a' + i);
+  }
+  var body = [
+    'return function (' + args.join(',') + ') {',
+    'var self = this;',
+    'var args;',
+    'var argLength = arguments.length;',
+    'if (arguments.length > ' + fnLength + ') {',
+    'args = new Array(arguments.length + 1);',
+    'for (var i = 0; i < arguments.length; i++) {',
+    'args[i] = arguments[i];',
+    '}',
+    '}',
+    'return new Promise(function (rs, rj) {',
+    'var cb = ' + callbackFn + ';',
+    'var res;',
+    'switch (argLength) {',
+    args.concat(['extra']).map(function (_, index) {
+      return (
+        'case ' + (index) + ':' +
+        'res = fn.call(' + ['self'].concat(args.slice(0, index)).concat('cb').join(',') + ');' +
+        'break;'
+      );
+    }).join(''),
+    'default:',
+    'args[argLength] = cb;',
+    'res = fn.apply(self, args);',
+    '}',
+    
+    'if (res &&',
+    '(typeof res === "object" || typeof res === "function") &&',
+    'typeof res.then === "function"',
+    ') {rs(res);}',
+    '});',
+    '};'
+  ].join('');
+
+  return Function(
+    ['Promise', 'fn'],
+    body
+  )(Promise, fn);
+}
+
+Promise.nodeify = function (fn) {
+  return function () {
+    var args = Array.prototype.slice.call(arguments);
+    var callback =
+      typeof args[args.length - 1] === 'function' ? args.pop() : null;
+    var ctx = this;
+    try {
+      return fn.apply(this, arguments).nodeify(callback, ctx);
+    } catch (ex) {
+      if (callback === null || typeof callback == 'undefined') {
+        return new Promise(function (resolve, reject) {
+          reject(ex);
+        });
+      } else {
+        asap(function () {
+          callback.call(ctx, ex);
+        })
+      }
+    }
+  }
+};
+
+Promise.prototype.nodeify = function (callback, ctx) {
+  if (typeof callback != 'function') return this;
+
+  this.then(function (value) {
+    asap(function () {
+      callback.call(ctx, null, value);
+    });
+  }, function (err) {
+    asap(function () {
+      callback.call(ctx, err);
+    });
+  });
+};