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Diffstat (limited to 'node_modules/asynckit')
| -rw-r--r-- | node_modules/asynckit/LICENSE | 21 | ||||
| -rw-r--r-- | node_modules/asynckit/README.md | 233 | ||||
| -rw-r--r-- | node_modules/asynckit/bench.js | 76 | ||||
| -rw-r--r-- | node_modules/asynckit/index.js | 6 | ||||
| -rw-r--r-- | node_modules/asynckit/lib/abort.js | 29 | ||||
| -rw-r--r-- | node_modules/asynckit/lib/async.js | 34 | ||||
| -rw-r--r-- | node_modules/asynckit/lib/defer.js | 26 | ||||
| -rw-r--r-- | node_modules/asynckit/lib/iterate.js | 75 | ||||
| -rw-r--r-- | node_modules/asynckit/lib/readable_asynckit.js | 91 | ||||
| -rw-r--r-- | node_modules/asynckit/lib/readable_parallel.js | 25 | ||||
| -rw-r--r-- | node_modules/asynckit/lib/readable_serial.js | 25 | ||||
| -rw-r--r-- | node_modules/asynckit/lib/readable_serial_ordered.js | 29 | ||||
| -rw-r--r-- | node_modules/asynckit/lib/state.js | 37 | ||||
| -rw-r--r-- | node_modules/asynckit/lib/streamify.js | 141 | ||||
| -rw-r--r-- | node_modules/asynckit/lib/terminator.js | 29 | ||||
| -rw-r--r-- | node_modules/asynckit/package.json | 63 | ||||
| -rw-r--r-- | node_modules/asynckit/parallel.js | 43 | ||||
| -rw-r--r-- | node_modules/asynckit/serial.js | 17 | ||||
| -rw-r--r-- | node_modules/asynckit/serialOrdered.js | 75 | ||||
| -rw-r--r-- | node_modules/asynckit/stream.js | 21 |
20 files changed, 1096 insertions, 0 deletions
diff --git a/node_modules/asynckit/LICENSE b/node_modules/asynckit/LICENSE new file mode 100644 index 0000000..c9eca5d --- /dev/null +++ b/node_modules/asynckit/LICENSE @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) 2016 Alex Indigo + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/asynckit/README.md b/node_modules/asynckit/README.md new file mode 100644 index 0000000..ddcc7e6 --- /dev/null +++ b/node_modules/asynckit/README.md @@ -0,0 +1,233 @@ +# asynckit [](https://www.npmjs.com/package/asynckit) + +Minimal async jobs utility library, with streams support. + +[](https://travis-ci.org/alexindigo/asynckit) +[](https://travis-ci.org/alexindigo/asynckit) +[](https://ci.appveyor.com/project/alexindigo/asynckit) + +[](https://coveralls.io/github/alexindigo/asynckit?branch=master) +[](https://david-dm.org/alexindigo/asynckit) +[](https://www.bithound.io/github/alexindigo/asynckit) + +<!-- [](https://www.npmjs.com/package/reamde) --> + +AsyncKit provides harness for `parallel` and `serial` iterators over list of items represented by arrays or objects. +Optionally it accepts abort function (should be synchronously return by iterator for each item), and terminates left over jobs upon an error event. For specific iteration order built-in (`ascending` and `descending`) and custom sort helpers also supported, via `asynckit.serialOrdered` method. + +It ensures async operations to keep behavior more stable and prevent `Maximum call stack size exceeded` errors, from sync iterators. + +| compression | size | +| :----------------- | -------: | +| asynckit.js | 12.34 kB | +| asynckit.min.js | 4.11 kB | +| asynckit.min.js.gz | 1.47 kB | + + +## Install + +```sh +$ npm install --save asynckit +``` + +## Examples + +### Parallel Jobs + +Runs iterator over provided array in parallel. Stores output in the `result` array, +on the matching positions. In unlikely event of an error from one of the jobs, +will terminate rest of the active jobs (if abort function is provided) +and return error along with salvaged data to the main callback function. + +#### Input Array + +```javascript +var parallel = require('asynckit').parallel + , assert = require('assert') + ; + +var source = [ 1, 1, 4, 16, 64, 32, 8, 2 ] + , expectedResult = [ 2, 2, 8, 32, 128, 64, 16, 4 ] + , expectedTarget = [ 1, 1, 2, 4, 8, 16, 32, 64 ] + , target = [] + ; + +parallel(source, asyncJob, function(err, result) +{ + assert.deepEqual(result, expectedResult); + assert.deepEqual(target, expectedTarget); +}); + +// async job accepts one element from the array +// and a callback function +function asyncJob(item, cb) +{ + // different delays (in ms) per item + var delay = item * 25; + + // pretend different jobs take different time to finish + // and not in consequential order + var timeoutId = setTimeout(function() { + target.push(item); + cb(null, item * 2); + }, delay); + + // allow to cancel "leftover" jobs upon error + // return function, invoking of which will abort this job + return clearTimeout.bind(null, timeoutId); +} +``` + +More examples could be found in [test/test-parallel-array.js](test/test-parallel-array.js). + +#### Input Object + +Also it supports named jobs, listed via object. + +```javascript +var parallel = require('asynckit/parallel') + , assert = require('assert') + ; + +var source = { first: 1, one: 1, four: 4, sixteen: 16, sixtyFour: 64, thirtyTwo: 32, eight: 8, two: 2 } + , expectedResult = { first: 2, one: 2, four: 8, sixteen: 32, sixtyFour: 128, thirtyTwo: 64, eight: 16, two: 4 } + , expectedTarget = [ 1, 1, 2, 4, 8, 16, 32, 64 ] + , expectedKeys = [ 'first', 'one', 'two', 'four', 'eight', 'sixteen', 'thirtyTwo', 'sixtyFour' ] + , target = [] + , keys = [] + ; + +parallel(source, asyncJob, function(err, result) +{ + assert.deepEqual(result, expectedResult); + assert.deepEqual(target, expectedTarget); + assert.deepEqual(keys, expectedKeys); +}); + +// supports full value, key, callback (shortcut) interface +function asyncJob(item, key, cb) +{ + // different delays (in ms) per item + var delay = item * 25; + + // pretend different jobs take different time to finish + // and not in consequential order + var timeoutId = setTimeout(function() { + keys.push(key); + target.push(item); + cb(null, item * 2); + }, delay); + + // allow to cancel "leftover" jobs upon error + // return function, invoking of which will abort this job + return clearTimeout.bind(null, timeoutId); +} +``` + +More examples could be found in [test/test-parallel-object.js](test/test-parallel-object.js). + +### Serial Jobs + +Runs iterator over provided array sequentially. Stores output in the `result` array, +on the matching positions. In unlikely event of an error from one of the jobs, +will not proceed to the rest of the items in the list +and return error along with salvaged data to the main callback function. + +#### Input Array + +```javascript +var serial = require('asynckit/serial') + , assert = require('assert') + ; + +var source = [ 1, 1, 4, 16, 64, 32, 8, 2 ] + , expectedResult = [ 2, 2, 8, 32, 128, 64, 16, 4 ] + , expectedTarget = [ 0, 1, 2, 3, 4, 5, 6, 7 ] + , target = [] + ; + +serial(source, asyncJob, function(err, result) +{ + assert.deepEqual(result, expectedResult); + assert.deepEqual(target, expectedTarget); +}); + +// extended interface (item, key, callback) +// also supported for arrays +function asyncJob(item, key, cb) +{ + target.push(key); + + // it will be automatically made async + // even it iterator "returns" in the same event loop + cb(null, item * 2); +} +``` + +More examples could be found in [test/test-serial-array.js](test/test-serial-array.js). + +#### Input Object + +Also it supports named jobs, listed via object. + +```javascript +var serial = require('asynckit').serial + , assert = require('assert') + ; + +var source = [ 1, 1, 4, 16, 64, 32, 8, 2 ] + , expectedResult = [ 2, 2, 8, 32, 128, 64, 16, 4 ] + , expectedTarget = [ 0, 1, 2, 3, 4, 5, 6, 7 ] + , target = [] + ; + +var source = { first: 1, one: 1, four: 4, sixteen: 16, sixtyFour: 64, thirtyTwo: 32, eight: 8, two: 2 } + , expectedResult = { first: 2, one: 2, four: 8, sixteen: 32, sixtyFour: 128, thirtyTwo: 64, eight: 16, two: 4 } + , expectedTarget = [ 1, 1, 4, 16, 64, 32, 8, 2 ] + , target = [] + ; + + +serial(source, asyncJob, function(err, result) +{ + assert.deepEqual(result, expectedResult); + assert.deepEqual(target, expectedTarget); +}); + +// shortcut interface (item, callback) +// works for object as well as for the arrays +function asyncJob(item, cb) +{ + target.push(item); + + // it will be automatically made async + // even it iterator "returns" in the same event loop + cb(null, item * 2); +} +``` + +More examples could be found in [test/test-serial-object.js](test/test-serial-object.js). + +_Note: Since _object_ is an _unordered_ collection of properties, +it may produce unexpected results with sequential iterations. +Whenever order of the jobs' execution is important please use `serialOrdered` method._ + +### Ordered Serial Iterations + +TBD + +For example [compare-property](compare-property) package. + +### Streaming interface + +TBD + +## Want to Know More? + +More examples can be found in [test folder](test/). + +Or open an [issue](https://github.com/alexindigo/asynckit/issues) with questions and/or suggestions. + +## License + +AsyncKit is licensed under the MIT license. diff --git a/node_modules/asynckit/bench.js b/node_modules/asynckit/bench.js new file mode 100644 index 0000000..c612f1a --- /dev/null +++ b/node_modules/asynckit/bench.js @@ -0,0 +1,76 @@ +/* eslint no-console: "off" */ + +var asynckit = require('./') + , async = require('async') + , assert = require('assert') + , expected = 0 + ; + +var Benchmark = require('benchmark'); +var suite = new Benchmark.Suite; + +var source = []; +for (var z = 1; z < 100; z++) +{ + source.push(z); + expected += z; +} + +suite +// add tests + +.add('async.map', function(deferred) +{ + var total = 0; + + async.map(source, + function(i, cb) + { + setImmediate(function() + { + total += i; + cb(null, total); + }); + }, + function(err, result) + { + assert.ifError(err); + assert.equal(result[result.length - 1], expected); + deferred.resolve(); + }); +}, {'defer': true}) + + +.add('asynckit.parallel', function(deferred) +{ + var total = 0; + + asynckit.parallel(source, + function(i, cb) + { + setImmediate(function() + { + total += i; + cb(null, total); + }); + }, + function(err, result) + { + assert.ifError(err); + assert.equal(result[result.length - 1], expected); + deferred.resolve(); + }); +}, {'defer': true}) + + +// add listeners +.on('cycle', function(ev) +{ + console.log(String(ev.target)); +}) +.on('complete', function() +{ + console.log('Fastest is ' + this.filter('fastest').map('name')); +}) +// run async +.run({ 'async': true }); diff --git a/node_modules/asynckit/index.js b/node_modules/asynckit/index.js new file mode 100644 index 0000000..455f945 --- /dev/null +++ b/node_modules/asynckit/index.js @@ -0,0 +1,6 @@ +module.exports = +{ + parallel : require('./parallel.js'), + serial : require('./serial.js'), + serialOrdered : require('./serialOrdered.js') +}; diff --git a/node_modules/asynckit/lib/abort.js b/node_modules/asynckit/lib/abort.js new file mode 100644 index 0000000..114367e --- /dev/null +++ b/node_modules/asynckit/lib/abort.js @@ -0,0 +1,29 @@ +// API +module.exports = abort; + +/** + * Aborts leftover active jobs + * + * @param {object} state - current state object + */ +function abort(state) +{ + Object.keys(state.jobs).forEach(clean.bind(state)); + + // reset leftover jobs + state.jobs = {}; +} + +/** + * Cleans up leftover job by invoking abort function for the provided job id + * + * @this state + * @param {string|number} key - job id to abort + */ +function clean(key) +{ + if (typeof this.jobs[key] == 'function') + { + this.jobs[key](); + } +} diff --git a/node_modules/asynckit/lib/async.js b/node_modules/asynckit/lib/async.js new file mode 100644 index 0000000..7f1288a --- /dev/null +++ b/node_modules/asynckit/lib/async.js @@ -0,0 +1,34 @@ +var defer = require('./defer.js'); + +// API +module.exports = async; + +/** + * Runs provided callback asynchronously + * even if callback itself is not + * + * @param {function} callback - callback to invoke + * @returns {function} - augmented callback + */ +function async(callback) +{ + var isAsync = false; + + // check if async happened + defer(function() { isAsync = true; }); + + return function async_callback(err, result) + { + if (isAsync) + { + callback(err, result); + } + else + { + defer(function nextTick_callback() + { + callback(err, result); + }); + } + }; +} diff --git a/node_modules/asynckit/lib/defer.js b/node_modules/asynckit/lib/defer.js new file mode 100644 index 0000000..b67110c --- /dev/null +++ b/node_modules/asynckit/lib/defer.js @@ -0,0 +1,26 @@ +module.exports = defer; + +/** + * Runs provided function on next iteration of the event loop + * + * @param {function} fn - function to run + */ +function defer(fn) +{ + var nextTick = typeof setImmediate == 'function' + ? setImmediate + : ( + typeof process == 'object' && typeof process.nextTick == 'function' + ? process.nextTick + : null + ); + + if (nextTick) + { + nextTick(fn); + } + else + { + setTimeout(fn, 0); + } +} diff --git a/node_modules/asynckit/lib/iterate.js b/node_modules/asynckit/lib/iterate.js new file mode 100644 index 0000000..5d2839a --- /dev/null +++ b/node_modules/asynckit/lib/iterate.js @@ -0,0 +1,75 @@ +var async = require('./async.js') + , abort = require('./abort.js') + ; + +// API +module.exports = iterate; + +/** + * Iterates over each job object + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {object} state - current job status + * @param {function} callback - invoked when all elements processed + */ +function iterate(list, iterator, state, callback) +{ + // store current index + var key = state['keyedList'] ? state['keyedList'][state.index] : state.index; + + state.jobs[key] = runJob(iterator, key, list[key], function(error, output) + { + // don't repeat yourself + // skip secondary callbacks + if (!(key in state.jobs)) + { + return; + } + + // clean up jobs + delete state.jobs[key]; + + if (error) + { + // don't process rest of the results + // stop still active jobs + // and reset the list + abort(state); + } + else + { + state.results[key] = output; + } + + // return salvaged results + callback(error, state.results); + }); +} + +/** + * Runs iterator over provided job element + * + * @param {function} iterator - iterator to invoke + * @param {string|number} key - key/index of the element in the list of jobs + * @param {mixed} item - job description + * @param {function} callback - invoked after iterator is done with the job + * @returns {function|mixed} - job abort function or something else + */ +function runJob(iterator, key, item, callback) +{ + var aborter; + + // allow shortcut if iterator expects only two arguments + if (iterator.length == 2) + { + aborter = iterator(item, async(callback)); + } + // otherwise go with full three arguments + else + { + aborter = iterator(item, key, async(callback)); + } + + return aborter; +} diff --git a/node_modules/asynckit/lib/readable_asynckit.js b/node_modules/asynckit/lib/readable_asynckit.js new file mode 100644 index 0000000..78ad240 --- /dev/null +++ b/node_modules/asynckit/lib/readable_asynckit.js @@ -0,0 +1,91 @@ +var streamify = require('./streamify.js') + , defer = require('./defer.js') + ; + +// API +module.exports = ReadableAsyncKit; + +/** + * Base constructor for all streams + * used to hold properties/methods + */ +function ReadableAsyncKit() +{ + ReadableAsyncKit.super_.apply(this, arguments); + + // list of active jobs + this.jobs = {}; + + // add stream methods + this.destroy = destroy; + this._start = _start; + this._read = _read; +} + +/** + * Destroys readable stream, + * by aborting outstanding jobs + * + * @returns {void} + */ +function destroy() +{ + if (this.destroyed) + { + return; + } + + this.destroyed = true; + + if (typeof this.terminator == 'function') + { + this.terminator(); + } +} + +/** + * Starts provided jobs in async manner + * + * @private + */ +function _start() +{ + // first argument – runner function + var runner = arguments[0] + // take away first argument + , args = Array.prototype.slice.call(arguments, 1) + // second argument - input data + , input = args[0] + // last argument - result callback + , endCb = streamify.callback.call(this, args[args.length - 1]) + ; + + args[args.length - 1] = endCb; + // third argument - iterator + args[1] = streamify.iterator.call(this, args[1]); + + // allow time for proper setup + defer(function() + { + if (!this.destroyed) + { + this.terminator = runner.apply(null, args); + } + else + { + endCb(null, Array.isArray(input) ? [] : {}); + } + }.bind(this)); +} + + +/** + * Implement _read to comply with Readable streams + * Doesn't really make sense for flowing object mode + * + * @private + */ +function _read() +{ + +} diff --git a/node_modules/asynckit/lib/readable_parallel.js b/node_modules/asynckit/lib/readable_parallel.js new file mode 100644 index 0000000..5d2929f --- /dev/null +++ b/node_modules/asynckit/lib/readable_parallel.js @@ -0,0 +1,25 @@ +var parallel = require('../parallel.js'); + +// API +module.exports = ReadableParallel; + +/** + * Streaming wrapper to `asynckit.parallel` + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {function} callback - invoked when all elements processed + * @returns {stream.Readable#} + */ +function ReadableParallel(list, iterator, callback) +{ + if (!(this instanceof ReadableParallel)) + { + return new ReadableParallel(list, iterator, callback); + } + + // turn on object mode + ReadableParallel.super_.call(this, {objectMode: true}); + + this._start(parallel, list, iterator, callback); +} diff --git a/node_modules/asynckit/lib/readable_serial.js b/node_modules/asynckit/lib/readable_serial.js new file mode 100644 index 0000000..7822698 --- /dev/null +++ b/node_modules/asynckit/lib/readable_serial.js @@ -0,0 +1,25 @@ +var serial = require('../serial.js'); + +// API +module.exports = ReadableSerial; + +/** + * Streaming wrapper to `asynckit.serial` + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {function} callback - invoked when all elements processed + * @returns {stream.Readable#} + */ +function ReadableSerial(list, iterator, callback) +{ + if (!(this instanceof ReadableSerial)) + { + return new ReadableSerial(list, iterator, callback); + } + + // turn on object mode + ReadableSerial.super_.call(this, {objectMode: true}); + + this._start(serial, list, iterator, callback); +} diff --git a/node_modules/asynckit/lib/readable_serial_ordered.js b/node_modules/asynckit/lib/readable_serial_ordered.js new file mode 100644 index 0000000..3de89c4 --- /dev/null +++ b/node_modules/asynckit/lib/readable_serial_ordered.js @@ -0,0 +1,29 @@ +var serialOrdered = require('../serialOrdered.js'); + +// API +module.exports = ReadableSerialOrdered; +// expose sort helpers +module.exports.ascending = serialOrdered.ascending; +module.exports.descending = serialOrdered.descending; + +/** + * Streaming wrapper to `asynckit.serialOrdered` + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {function} sortMethod - custom sort function + * @param {function} callback - invoked when all elements processed + * @returns {stream.Readable#} + */ +function ReadableSerialOrdered(list, iterator, sortMethod, callback) +{ + if (!(this instanceof ReadableSerialOrdered)) + { + return new ReadableSerialOrdered(list, iterator, sortMethod, callback); + } + + // turn on object mode + ReadableSerialOrdered.super_.call(this, {objectMode: true}); + + this._start(serialOrdered, list, iterator, sortMethod, callback); +} diff --git a/node_modules/asynckit/lib/state.js b/node_modules/asynckit/lib/state.js new file mode 100644 index 0000000..cbea7ad --- /dev/null +++ b/node_modules/asynckit/lib/state.js @@ -0,0 +1,37 @@ +// API +module.exports = state; + +/** + * Creates initial state object + * for iteration over list + * + * @param {array|object} list - list to iterate over + * @param {function|null} sortMethod - function to use for keys sort, + * or `null` to keep them as is + * @returns {object} - initial state object + */ +function state(list, sortMethod) +{ + var isNamedList = !Array.isArray(list) + , initState = + { + index : 0, + keyedList: isNamedList || sortMethod ? Object.keys(list) : null, + jobs : {}, + results : isNamedList ? {} : [], + size : isNamedList ? Object.keys(list).length : list.length + } + ; + + if (sortMethod) + { + // sort array keys based on it's values + // sort object's keys just on own merit + initState.keyedList.sort(isNamedList ? sortMethod : function(a, b) + { + return sortMethod(list[a], list[b]); + }); + } + + return initState; +} diff --git a/node_modules/asynckit/lib/streamify.js b/node_modules/asynckit/lib/streamify.js new file mode 100644 index 0000000..f56a1c9 --- /dev/null +++ b/node_modules/asynckit/lib/streamify.js @@ -0,0 +1,141 @@ +var async = require('./async.js'); + +// API +module.exports = { + iterator: wrapIterator, + callback: wrapCallback +}; + +/** + * Wraps iterators with long signature + * + * @this ReadableAsyncKit# + * @param {function} iterator - function to wrap + * @returns {function} - wrapped function + */ +function wrapIterator(iterator) +{ + var stream = this; + + return function(item, key, cb) + { + var aborter + , wrappedCb = async(wrapIteratorCallback.call(stream, cb, key)) + ; + + stream.jobs[key] = wrappedCb; + + // it's either shortcut (item, cb) + if (iterator.length == 2) + { + aborter = iterator(item, wrappedCb); + } + // or long format (item, key, cb) + else + { + aborter = iterator(item, key, wrappedCb); + } + + return aborter; + }; +} + +/** + * Wraps provided callback function + * allowing to execute snitch function before + * real callback + * + * @this ReadableAsyncKit# + * @param {function} callback - function to wrap + * @returns {function} - wrapped function + */ +function wrapCallback(callback) +{ + var stream = this; + + var wrapped = function(error, result) + { + return finisher.call(stream, error, result, callback); + }; + + return wrapped; +} + +/** + * Wraps provided iterator callback function + * makes sure snitch only called once, + * but passes secondary calls to the original callback + * + * @this ReadableAsyncKit# + * @param {function} callback - callback to wrap + * @param {number|string} key - iteration key + * @returns {function} wrapped callback + */ +function wrapIteratorCallback(callback, key) +{ + var stream = this; + + return function(error, output) + { + // don't repeat yourself + if (!(key in stream.jobs)) + { + callback(error, output); + return; + } + + // clean up jobs + delete stream.jobs[key]; + + return streamer.call(stream, error, {key: key, value: output}, callback); + }; +} + +/** + * Stream wrapper for iterator callback + * + * @this ReadableAsyncKit# + * @param {mixed} error - error response + * @param {mixed} output - iterator output + * @param {function} callback - callback that expects iterator results + */ +function streamer(error, output, callback) +{ + if (error && !this.error) + { + this.error = error; + this.pause(); + this.emit('error', error); + // send back value only, as expected + callback(error, output && output.value); + return; + } + + // stream stuff + this.push(output); + + // back to original track + // send back value only, as expected + callback(error, output && output.value); +} + +/** + * Stream wrapper for finishing callback + * + * @this ReadableAsyncKit# + * @param {mixed} error - error response + * @param {mixed} output - iterator output + * @param {function} callback - callback that expects final results + */ +function finisher(error, output, callback) +{ + // signal end of the stream + // only for successfully finished streams + if (!error) + { + this.push(null); + } + + // back to original track + callback(error, output); +} diff --git a/node_modules/asynckit/lib/terminator.js b/node_modules/asynckit/lib/terminator.js new file mode 100644 index 0000000..d6eb992 --- /dev/null +++ b/node_modules/asynckit/lib/terminator.js @@ -0,0 +1,29 @@ +var abort = require('./abort.js') + , async = require('./async.js') + ; + +// API +module.exports = terminator; + +/** + * Terminates jobs in the attached state context + * + * @this AsyncKitState# + * @param {function} callback - final callback to invoke after termination + */ +function terminator(callback) +{ + if (!Object.keys(this.jobs).length) + { + return; + } + + // fast forward iteration index + this.index = this.size; + + // abort jobs + abort(this); + + // send back results we have so far + async(callback)(null, this.results); +} diff --git a/node_modules/asynckit/package.json b/node_modules/asynckit/package.json new file mode 100644 index 0000000..51147d6 --- /dev/null +++ b/node_modules/asynckit/package.json @@ -0,0 +1,63 @@ +{ + "name": "asynckit", + "version": "0.4.0", + "description": "Minimal async jobs utility library, with streams support", + "main": "index.js", + "scripts": { + "clean": "rimraf coverage", + "lint": "eslint *.js lib/*.js test/*.js", + "test": "istanbul cover --reporter=json tape -- 'test/test-*.js' | tap-spec", + "win-test": "tape test/test-*.js", + "browser": "browserify -t browserify-istanbul test/lib/browserify_adjustment.js test/test-*.js | obake --coverage | tap-spec", + "report": "istanbul report", + "size": "browserify index.js | size-table asynckit", + "debug": "tape test/test-*.js" + }, + "pre-commit": [ + "clean", + "lint", + "test", + "browser", + "report", + "size" + ], + "repository": { + "type": "git", + "url": "git+https://github.com/alexindigo/asynckit.git" + }, + "keywords": [ + "async", + "jobs", + "parallel", + "serial", + "iterator", + "array", + "object", + "stream", + "destroy", + "terminate", + "abort" + ], + "author": "Alex Indigo <iam@alexindigo.com>", + "license": "MIT", + "bugs": { + "url": "https://github.com/alexindigo/asynckit/issues" + }, + "homepage": "https://github.com/alexindigo/asynckit#readme", + "devDependencies": { + "browserify": "^13.0.0", + "browserify-istanbul": "^2.0.0", + "coveralls": "^2.11.9", + "eslint": "^2.9.0", + "istanbul": "^0.4.3", + "obake": "^0.1.2", + "phantomjs-prebuilt": "^2.1.7", + "pre-commit": "^1.1.3", + "reamde": "^1.1.0", + "rimraf": "^2.5.2", + "size-table": "^0.2.0", + "tap-spec": "^4.1.1", + "tape": "^4.5.1" + }, + "dependencies": {} +} diff --git a/node_modules/asynckit/parallel.js b/node_modules/asynckit/parallel.js new file mode 100644 index 0000000..3c50344 --- /dev/null +++ b/node_modules/asynckit/parallel.js @@ -0,0 +1,43 @@ +var iterate = require('./lib/iterate.js') + , initState = require('./lib/state.js') + , terminator = require('./lib/terminator.js') + ; + +// Public API +module.exports = parallel; + +/** + * Runs iterator over provided array elements in parallel + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {function} callback - invoked when all elements processed + * @returns {function} - jobs terminator + */ +function parallel(list, iterator, callback) +{ + var state = initState(list); + + while (state.index < (state['keyedList'] || list).length) + { + iterate(list, iterator, state, function(error, result) + { + if (error) + { + callback(error, result); + return; + } + + // looks like it's the last one + if (Object.keys(state.jobs).length === 0) + { + callback(null, state.results); + return; + } + }); + + state.index++; + } + + return terminator.bind(state, callback); +} diff --git a/node_modules/asynckit/serial.js b/node_modules/asynckit/serial.js new file mode 100644 index 0000000..6cd949a --- /dev/null +++ b/node_modules/asynckit/serial.js @@ -0,0 +1,17 @@ +var serialOrdered = require('./serialOrdered.js'); + +// Public API +module.exports = serial; + +/** + * Runs iterator over provided array elements in series + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {function} callback - invoked when all elements processed + * @returns {function} - jobs terminator + */ +function serial(list, iterator, callback) +{ + return serialOrdered(list, iterator, null, callback); +} diff --git a/node_modules/asynckit/serialOrdered.js b/node_modules/asynckit/serialOrdered.js new file mode 100644 index 0000000..607eafe --- /dev/null +++ b/node_modules/asynckit/serialOrdered.js @@ -0,0 +1,75 @@ +var iterate = require('./lib/iterate.js') + , initState = require('./lib/state.js') + , terminator = require('./lib/terminator.js') + ; + +// Public API +module.exports = serialOrdered; +// sorting helpers +module.exports.ascending = ascending; +module.exports.descending = descending; + +/** + * Runs iterator over provided sorted array elements in series + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {function} sortMethod - custom sort function + * @param {function} callback - invoked when all elements processed + * @returns {function} - jobs terminator + */ +function serialOrdered(list, iterator, sortMethod, callback) +{ + var state = initState(list, sortMethod); + + iterate(list, iterator, state, function iteratorHandler(error, result) + { + if (error) + { + callback(error, result); + return; + } + + state.index++; + + // are we there yet? + if (state.index < (state['keyedList'] || list).length) + { + iterate(list, iterator, state, iteratorHandler); + return; + } + + // done here + callback(null, state.results); + }); + + return terminator.bind(state, callback); +} + +/* + * -- Sort methods + */ + +/** + * sort helper to sort array elements in ascending order + * + * @param {mixed} a - an item to compare + * @param {mixed} b - an item to compare + * @returns {number} - comparison result + */ +function ascending(a, b) +{ + return a < b ? -1 : a > b ? 1 : 0; +} + +/** + * sort helper to sort array elements in descending order + * + * @param {mixed} a - an item to compare + * @param {mixed} b - an item to compare + * @returns {number} - comparison result + */ +function descending(a, b) +{ + return -1 * ascending(a, b); +} diff --git a/node_modules/asynckit/stream.js b/node_modules/asynckit/stream.js new file mode 100644 index 0000000..d43465f --- /dev/null +++ b/node_modules/asynckit/stream.js @@ -0,0 +1,21 @@ +var inherits = require('util').inherits + , Readable = require('stream').Readable + , ReadableAsyncKit = require('./lib/readable_asynckit.js') + , ReadableParallel = require('./lib/readable_parallel.js') + , ReadableSerial = require('./lib/readable_serial.js') + , ReadableSerialOrdered = require('./lib/readable_serial_ordered.js') + ; + +// API +module.exports = +{ + parallel : ReadableParallel, + serial : ReadableSerial, + serialOrdered : ReadableSerialOrdered, +}; + +inherits(ReadableAsyncKit, Readable); + +inherits(ReadableParallel, ReadableAsyncKit); +inherits(ReadableSerial, ReadableAsyncKit); +inherits(ReadableSerialOrdered, ReadableAsyncKit); |