Beta 7 with some repo names changed.

This commit is contained in:
Luis Fernando Molina committed 2020-11-15 13:05:19 +01:00
1 parent 0f7b40cca7
commit 963c19493a
3408 files changed
+462217 -15516

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/* 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 });
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module.exports =
{
parallel : require('./parallel.js'),
serial : require('./serial.js'),
serialOrdered : require('./serialOrdered.js')
};
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// 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]();
}
}
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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);
});
}
};
}
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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);
}
}
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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;
}
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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()
{
}
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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);
}
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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);
}
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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);
}
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// 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;
}
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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);
}
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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);
}
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{
"_from": "asynckit@^0.4.0",
"_id": "asynckit@0.4.0",
"_inBundle": false,
"_integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k=",
"_location": "/asynckit",
"_phantomChildren": {},
"_requested": {
"type": "range",
"registry": true,
"raw": "asynckit@^0.4.0",
"name": "asynckit",
"escapedName": "asynckit",
"rawSpec": "^0.4.0",
"saveSpec": null,
"fetchSpec": "^0.4.0"
},
"_requiredBy": [
"/form-data"
],
"_resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
"_shasum": "c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79",
"_spec": "asynckit@^0.4.0",
"_where": "C:\\Users\\Luis\\source\\repos\\AAMasters\\BackendServers\\node_modules\\form-data",
"author": {
"name": "Alex Indigo",
"email": "iam@alexindigo.com"
},
"bugs": {
"url": "https://github.com/alexindigo/asynckit/issues"
},
"bundleDependencies": false,
"dependencies": {},
"deprecated": false,
"description": "Minimal async jobs utility library, with streams support",
"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"
},
"homepage": "https://github.com/alexindigo/asynckit#readme",
"keywords": [
"async",
"jobs",
"parallel",
"serial",
"iterator",
"array",
"object",
"stream",
"destroy",
"terminate",
"abort"
],
"license": "MIT",
"main": "index.js",
"name": "asynckit",
"pre-commit": [
"clean",
"lint",
"test",
"browser",
"report",
"size"
],
"repository": {
"type": "git",
"url": "git+https://github.com/alexindigo/asynckit.git"
},
"scripts": {
"browser": "browserify -t browserify-istanbul test/lib/browserify_adjustment.js test/test-*.js | obake --coverage | tap-spec",
"clean": "rimraf coverage",
"debug": "tape test/test-*.js",
"lint": "eslint *.js lib/*.js test/*.js",
"report": "istanbul report",
"size": "browserify index.js | size-table asynckit",
"test": "istanbul cover --reporter=json tape -- 'test/test-*.js' | tap-spec",
"win-test": "tape test/test-*.js"
},
"version": "0.4.0"
}
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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);
}
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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);
}
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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);
}
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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);