async - npm Package Compare versions

Comparing version 2.0.0-rc.1 to 2.0.0-rc.2

asyncify.js

@@ -12,5 +12,5 @@ 'use strict';
 
-var _rest = require('lodash/rest');
+var _initialParams = require('./internal/initialParams');
 
-var _rest2 = _interopRequireDefault(_rest);
+var _initialParams2 = _interopRequireDefault(_initialParams);
 
@@ -20,4 +20,3 @@ function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
 function asyncify(func) {
-    return (0, _rest2.default)(function (args) {
-        var callback = args.pop();
+    return (0, _initialParams2.default)(function (args, callback) {
         var result;
@@ -24,0 +23,0 @@ try {

CHANGELOG.md

 # v2.0.0
 
-Lots of changes here! The biggest feature is modularization.  You can now `require("async/series")` to only require the `series` function.  Every Async library function is available this way.  You still can `require("async")` to require the entire library, like you could do before.
+Lots of changes here! The biggest feature is modularization. You can now `require("async/series")` to only require the `series` function. Every Async library function is available this way. You still can `require("async")` to require the entire library, like you could do before.
 
-We also provide Async as a collection of ES2015 modules. You can now `import {each} from 'async-es'` or `import waterfall from 'async-es/waterfall'`.  If you are using only a few Async functions, and are using a ES bundler such as Rollup, this can significantly lower your build size.
+We also provide Async as a collection of ES2015 modules. You can now `import {each} from 'async-es'` or `import waterfall from 'async-es/waterfall'`. If you are using only a few Async functions, and are using a ES bundler such as Rollup, this can significantly lower your build size.
 
 Major thanks to [**@Kikobeats**](github.com/Kikobeats), [**@aearly**](github.com/aearly) and [**@megawac**](github.com/megawac) for doing the majority of the modularization work, as well as [**@jdalton**](github.com/jdalton) and [**@Rich-Harris**](github.com/Rich-Harris) for advisory work on the general modularization strategy.
 
-Another one of the general themes of the 2.0 release is standardization of what an "async" function is.  We are now more strictly following the node-style continuation passing style.  That is, an async function is a function that:
+Another one of the general themes of the 2.0 release is standardization of what an "async" function is. We are now more strictly following the node-style continuation passing style. That is, an async function is a function that:
 
@@ -20,9 +20,10 @@ 1. Takes a variable number of arguments
 
-Another theme is performance.  We have eliminated internal deferrals in all cases where they make sense.  For example, in `waterfall` and `auto`, there was a `setImmediate` between each task -- these deferrals have been removed.  A `setImmediate` call can add up to 1ms of delay. This might not seem like a lot, but it can add up if you are using many Async functions in the course of processing a HTTP request, for example.  Nearly all asynchronous functions that do I/O already have some sort of deferral built in, so the extra deferral is unnecessary.  The trade-off of this change is removing our built-in stack-overflow defense. Many synchronous callback calls in series can quickly overflow the JS call stack.  If you do have a function that is sometimes synchronous (calling its callback on the same tick), and are running into stack overflows, wrap it with `async.ensureAsync()`.
+Another theme is performance. We have eliminated internal deferrals in all cases where they make sense. For example, in `waterfall` and `auto`, there was a `setImmediate` between each task -- these deferrals have been removed. A `setImmediate` call can add up to 1ms of delay. This might not seem like a lot, but it can add up if you are using many Async functions in the course of processing a HTTP request, for example. Nearly all asynchronous functions that do I/O already have some sort of deferral built in, so the extra deferral is unnecessary. The trade-off of this change is removing our built-in stack-overflow defense. Many synchronous callback calls in series can quickly overflow the JS call stack. If you do have a function that is sometimes synchronous (calling its callback on the same tick), and are running into stack overflows, wrap it with `async.ensureAsync()`.
 
 ## New Features
 
-- Async is now modularized.  Individual functions can be `require()`d from the main package. (`require('async/auto')`) (#696)
-- Async is also available as a collection of ES2015 modules in the new `async-es` package.  (`import {forEachSeries} from 'async-es'`) (#696)
+- Async is now modularized. Individual functions can be `require()`d from the main package. (`require('async/auto')`) (#984, #996)
+- Async is also available as a collection of ES2015 modules in the new `async-es` package. (`import {forEachSeries} from 'async-es'`) (#984, #996)
 - Added `race`, analogous to `Promise.race()`. It will run an array of async tasks in parallel and will call its callback with the result of the first task to respond. (#568, #1038)
+- Array methods now accept ES2015 iterators.  Maps, Sets, and anything that implements the iterator spec can now be passed directly to `each`, `map`, `parallel`, etc.. (#579, #839, #1074)
 - Added `timeout`, a wrapper for an async function that will make the task time-out after the specified time. (#1007, #1027)
@@ -33,2 +34,3 @@ - `constant` supports dynamic arguments -- it will now always use its last argument as the callback. (#1016, #1052)
 - You can now limit the concurrency of `auto` tasks. (#635, #637)
+- Added `retryable`, a relative of `retry` that wraps an async function, making it retry when called.
 - Added `q.unsaturated` -- callback called when a `queue`'s number of running workers falls below a threshold. (#868, #1030, #1033, #1034)
@@ -38,8 +40,9 @@
 
-- Calling a callback more than once is considered an error, and an error will be thrown.  This had an explicit breaking change in `waterfall`. If you were relying on this behavior, you should more accurately represent your control flow as an event emitter or stream. (#814, #815, #1048, #1050)
-- `auto` task functions now always take the callback as the last argument.  If a task has dependencies, the `results` object will be passed as the first argument. To migrate old task functions, wrap them with [`_.flip`](https://lodash.com/docs#flip) (#1036, #1042)
+- Calling a callback more than once is considered an error, and an error will be thrown. This had an explicit breaking change in `waterfall`. If you were relying on this behavior, you should more accurately represent your control flow as an event emitter or stream. (#814, #815, #1048, #1050)
+- `auto` task functions now always take the callback as the last argument. If a task has dependencies, the `results` object will be passed as the first argument. To migrate old task functions, wrap them with [`_.flip`](https://lodash.com/docs#flip) (#1036, #1042)
 - Internal `setImmediate` calls have been refactored away. This may make existing flows vulnerable to stack overflows if you use many synchronous functions in series. Use `ensureAsync` to work around this. (#696, #704, #1049, #1050)
 - `filter`, `reject`, `some`, `every`, and related functions now expect an error as the first callback argument, rather than just a simple boolean. Pass `null` as the first argument, or use `fs.access` instead of `fs.exists`. (#118, #774, #1028, #1041)
-- `{METHOD}` and `{METHOD}Series` are now implemented in terms of `{METHOD}Limit`.  This is a major internal simplification, and is not expected to cause many problems, but it does subtly affect how functions execute internally. (#778, #847)
-- `retry`'s callback is now optional.  Previously, omitting the callback would partially apply the function, meaning it could be passed directly as a task to `series` or `auto`.
+- `{METHOD}` and `{METHOD}Series` are now implemented in terms of `{METHOD}Limit`. This is a major internal simplification, and is not expected to cause many problems, but it does subtly affect how functions execute internally. (#778, #847)
+- `retry`'s callback is now optional. Previously, omitting the callback would partially apply the function, meaning it could be passed directly as a task to `series` or `auto`. The partially applied "control-flow" behavior has been separated out into `retryable`.
+- The timing of the `q.saturated()` callback in a `queue` has been modified to better reflect when tasks pushed to the queue will start queueing. (#724, #1078)
 
@@ -49,3 +52,3 @@ ## Other
 - Added `someSeries` and `everySeries` for symmetry, as well as a complete set of `any`/`anyLimit`/`anySeries` and `all`/`/allLmit`/`allSeries` aliases.
-- Added `find` as an alias for `detect`  (as well as `findLimit` and `findSeries`).
+- Added `find` as an alias for `detect. (as well as `findLimit` and `findSeries`).
 - Various doc fixes (#1005, #1008, #1010, #1015, #1021, #1037)
@@ -64,3 +67,3 @@
 - `auto` will properly handle concurrency when there is no callback (#966)
-- `auto` will now  properly stop execution when an error occurs (#988, #993)
+- `auto` will no. properly stop execution when an error occurs (#988, #993)
 - Various doc fixes (#971, #980)
@@ -72,4 +75,4 @@
 - `map` now returns an object when an object is passed in, rather than array with non-numeric keys. `map` will begin always returning an array with numeric indexes in the next major release. (#873)
-- `auto` now accepts an optional `concurrency` argument to limit the number of  running tasks (#637)
-- Added `queue#workersList()`, to retrieve the list  of currently running tasks. (#891)
+- `auto` now accepts an optional `concurrency` argument to limit the number o. running tasks (#637)
+- Added `queue#workersList()`, to retrieve the lis. of currently running tasks. (#891)
 - Various code simplifications (#896, #904)
@@ -120,3 +123,3 @@ - Various doc fixes :scroll: (#890, #894, #903, #905, #912)
 
-- Small regression with synchronous iterator behavior in `eachSeries` with a 1-element array.  Before 1.1.0, `eachSeries`'s callback was called on the same tick, which this patch restores.  In 2.0.0, it will be called on the next tick.  (#782)
+- Small regression with synchronous iterator behavior in `eachSeries` with a 1-element array. Before 1.1.0, `eachSeries`'s callback was called on the same tick, which this patch restores. In 2.0.0, it will be called on the next tick. (#782)
 
@@ -129,3 +132,3 @@
 - Added `timesLimit` (#743)
-- `concurrency` can be changed after initialization in `queue` by setting `q.concurrency`.  The new concurrency will be reflected the next time a task is processed. (#747, #772)
+- `concurrency` can be changed after initialization in `queue` by setting `q.concurrency`. The new concurrency will be reflected the next time a task is processed. (#747, #772)
 
@@ -141,3 +144,3 @@ Bug Fixes:
 
-- Small regression with synchronous iterator behavior in `eachSeries` with a 1-element array.  Before 1.1.0, `eachSeries`'s callback was called on the same tick, which this patch restores.  In 2.0.0, it will be called on the next tick.  (#782)
+- Small regression with synchronous iterator behavior in `eachSeries` with a 1-element array. Before 1.1.0, `eachSeries`'s callback was called on the same tick, which this patch restores. In 2.0.0, it will be called on the next tick. (#782)
 
@@ -144,0 +147,0 @@

component.json

 {
   "name": "async",
   "description": "Higher-order functions and common patterns for asynchronous code",
-  "version": "2.0.0-rc.1",
+  "version": "2.0.0-rc.2",
   "keywords": [
@@ -6,0 +6,0 @@ "async",

constant.js

@@ -11,2 +11,6 @@ 'use strict';
 
+var _initialParams = require('./internal/initialParams');
+
+var _initialParams2 = _interopRequireDefault(_initialParams);
+
 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
@@ -16,7 +20,6 @@
     var args = [null].concat(values);
-    return function () {
-        var callback = [].slice.call(arguments).pop();
+    return (0, _initialParams2.default)(function (ignoredArgs, callback) {
         return callback.apply(this, args);
-    };
+    });
 });
 module.exports = exports['default'];

dist/async.min.js

@@ -1,2 +0,2 @@
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ensureAsync.js

@@ -8,6 +8,2 @@ 'use strict';
 
-var _rest = require('lodash/rest');
-
-var _rest2 = _interopRequireDefault(_rest);
-
 var _setImmediate = require('./internal/setImmediate');
@@ -17,7 +13,10 @@
 
+var _initialParams = require('./internal/initialParams');
+
+var _initialParams2 = _interopRequireDefault(_initialParams);
+
 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
 
 function ensureAsync(fn) {
-    return (0, _rest2.default)(function (args) {
-        var callback = args.pop();
+    return (0, _initialParams2.default)(function (args, callback) {
         var sync = true;
@@ -24,0 +23,0 @@ args.push(function () {

internal/applyEach.js

@@ -12,2 +12,6 @@ 'use strict';
 
+var _initialParams = require('./initialParams');
+
+var _initialParams2 = _interopRequireDefault(_initialParams);
+
 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
@@ -17,5 +21,4 @@
     return (0, _rest2.default)(function (fns, args) {
-        var go = (0, _rest2.default)(function (args) {
+        var go = (0, _initialParams2.default)(function (args, callback) {
             var that = this;
-            var callback = args.pop();
             return eachfn(fns, function (fn, _, cb) {
@@ -22,0 +25,0 @@ fn.apply(that, args.concat([cb]));

internal/eachOfLimit.js

@@ -16,5 +16,5 @@ 'use strict';
 
-var _keyIterator = require('./keyIterator');
+var _iterator = require('./iterator');
 
-var _keyIterator2 = _interopRequireDefault(_keyIterator);
+var _iterator2 = _interopRequireDefault(_iterator);
 
@@ -31,3 +31,3 @@ var _onlyOnce = require('./onlyOnce');
         obj = obj || [];
-        var nextKey = (0, _keyIterator2.default)(obj);
+        var nextElem = (0, _iterator2.default)(obj);
         if (limit <= 0) {
@@ -46,4 +46,4 @@ return callback(null);
             while (running < limit && !errored) {
-                var key = nextKey();
-                if (key === null) {
+                var elem = nextElem();
+                if (elem === null) {
                     done = true;
@@ -56,3 +56,3 @@ if (running <= 0) {
                 running += 1;
-                iteratee(obj[key], key, (0, _onlyOnce2.default)(function (err) {
+                iteratee(elem.value, elem.key, (0, _onlyOnce2.default)(function (err) {
                     running -= 1;
@@ -59,0 +59,0 @@ if (err) {

internal/map.js

@@ -12,2 +12,6 @@ 'use strict';
 
+var _getIterator = require('./getIterator');
+
+var _getIterator2 = _interopRequireDefault(_getIterator);
+
 var _noop = require('lodash/noop');
@@ -26,3 +30,3 @@
     arr = arr || [];
-    var results = (0, _isArrayLike2.default)(arr) ? [] : {};
+    var results = (0, _isArrayLike2.default)(arr) || (0, _getIterator2.default)(arr) ? [] : {};
     eachfn(arr, function (value, index, callback) {
@@ -29,0 +33,0 @@ iteratee(value, function (err, v) {

internal/queue.js

@@ -69,9 +69,2 @@ 'use strict';
             }
-
-            if (q.tasks.length === q.concurrency) {
-                q.saturated();
-            }
-            if (q.tasks.length <= q.concurrency - q.buffer) {
-                q.unsaturated();
-            }
         });
@@ -96,2 +89,7 @@ (0, _setImmediate2.default)(q.process);
             });
+
+            if (workers <= q.concurrency - q.buffer) {
+                q.unsaturated();
+            }
+
             if (q.tasks.length + workers === 0) {
@@ -139,2 +137,7 @@ q.drain();
                 workersList.push(tasks[0]);
+
+                if (workers === q.concurrency) {
+                    q.saturated();
+                }
+
                 var cb = (0, _onlyOnce2.default)(_next(q, tasks));
@@ -141,0 +144,0 @@ worker(data, cb);

memoize.js

@@ -24,2 +24,6 @@ 'use strict';
 
+var _initialParams = require('./internal/initialParams');
+
+var _initialParams2 = _interopRequireDefault(_initialParams);
+
 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
@@ -31,4 +35,3 @@
     hasher = hasher || _identity2.default;
-    var memoized = (0, _rest2.default)(function memoized(args) {
-        var callback = args.pop();
+    var memoized = (0, _initialParams2.default)(function memoized(args, callback) {
         var key = hasher.apply(null, args);
@@ -35,0 +38,0 @@ if ((0, _has2.default)(memo, key)) {

package.json

 {
   "name": "async",
   "description": "Higher-order functions and common patterns for asynchronous code",
-  "version": "2.0.0-rc.1",
+  "version": "2.0.0-rc.2",
   "main": "dist/async.js",
@@ -6,0 +6,0 @@ "author": "Caolan McMahon",

retryable.js

@@ -12,5 +12,3 @@ 'use strict';
     }
-    return (0, _rest2.default)(function (args) {
-        var callback = args.pop();
-
+    return (0, _initialParams2.default)(function (args, callback) {
         function taskFn(cb) {
@@ -28,5 +26,5 @@ task.apply(null, args.concat([cb]));
 
-var _rest = require('lodash/rest');
+var _initialParams = require('./internal/initialParams');
 
-var _rest2 = _interopRequireDefault(_rest);
+var _initialParams2 = _interopRequireDefault(_initialParams);
 
@@ -33,0 +31,0 @@ function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

timeout.js

@@ -7,2 +7,9 @@ 'use strict';
 exports.default = timeout;
+
+var _initialParams = require('./internal/initialParams');
+
+var _initialParams2 = _interopRequireDefault(_initialParams);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
 function timeout(asyncFn, miliseconds) {
@@ -26,18 +33,9 @@ var originalCallback, timer;
 
-    function injectCallback(asyncFnArgs) {
-        // replace callback in asyncFn args
-        var args = Array.prototype.slice.call(asyncFnArgs, 0);
-        originalCallback = args[args.length - 1];
-        args[args.length - 1] = injectedCallback;
-        return args;
-    }
-
-    function wrappedFn() {
+    return (0, _initialParams2.default)(function (args, origCallback) {
+        originalCallback = origCallback;
         // setup timer and call original function
         timer = setTimeout(timeoutCallback, miliseconds);
-        asyncFn.apply(null, injectCallback(arguments));
-    }
-
-    return wrappedFn;
+        asyncFn.apply(null, args.concat(injectedCallback));
+    });
 }
 module.exports = exports['default'];

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388175

increased by23.84%

Number of package files

100

increased by3.09%

Lines of code

5861

increased by0.64%

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