'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _eachOf = require('./eachOf.js');
var _eachOf2 = _interopRequireDefault(_eachOf);
var _withoutIndex = require('./internal/withoutIndex.js');
var _withoutIndex2 = _interopRequireDefault(_withoutIndex);
var _wrapAsync = require('./internal/wrapAsync.js');
var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Applies the function `iteratee` to each item in `coll`, in parallel.
* The `iteratee` is called with an item from the list, and a callback for when
* it has finished. If the `iteratee` passes an error to its `callback`, the
* main `callback` (for the `each` function) is immediately called with the
* error.
*
* Note, that since this function applies `iteratee` to each item in parallel,
* there is no guarantee that the iteratee functions will complete in order.
*
* @name each
* @static
* @memberOf module:Collections
* @method
* @alias forEach
* @category Collection
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {AsyncFunction} iteratee - An async function to apply to
* each item in `coll`. Invoked with (item, callback).
* The array index is not passed to the iteratee.
* If you need the index, use `eachOf`.
* @param {Function} [callback] - A callback which is called when all
* `iteratee` functions have finished, or an error occurs. Invoked with (err).
* @returns {Promise} a promise, if a callback is omitted
* @example
*
* // dir1 is a directory that contains file1.txt, file2.txt
* // dir2 is a directory that contains file3.txt, file4.txt
* // dir3 is a directory that contains file5.txt
* // dir4 does not exist
*
* const fileList = [ 'dir1/file2.txt', 'dir2/file3.txt', 'dir/file5.txt'];
* const withMissingFileList = ['dir1/file1.txt', 'dir4/file2.txt'];
*
* // asynchronous function that deletes a file
* const deleteFile = function(file, callback) {
* fs.unlink(file, callback);
* };
*
* // Using callbacks
* async.each(fileList, deleteFile, function(err) {
* if( err ) {
* console.log(err);
* } else {
* console.log('All files have been deleted successfully');
* }
* });
*
* // Error Handling
* async.each(withMissingFileList, deleteFile, function(err){
* console.log(err);
* // [ Error: ENOENT: no such file or directory ]
* // since dir4/file2.txt does not exist
* // dir1/file1.txt could have been deleted
* });
*
* // Using Promises
* async.each(fileList, deleteFile)
* .then( () => {
* console.log('All files have been deleted successfully');
* }).catch( err => {
* console.log(err);
* });
*
* // Error Handling
* async.each(fileList, deleteFile)
* .then( () => {
* console.log('All files have been deleted successfully');
* }).catch( err => {
* console.log(err);
* // [ Error: ENOENT: no such file or directory ]
* // since dir4/file2.txt does not exist
* // dir1/file1.txt could have been deleted
* });
*
* // Using async/await
* async () => {
* try {
* await async.each(files, deleteFile);
* }
* catch (err) {
* console.log(err);
* }
* }
*
* // Error Handling
* async () => {
* try {
* await async.each(withMissingFileList, deleteFile);
* }
* catch (err) {
* console.log(err);
* // [ Error: ENOENT: no such file or directory ]
* // since dir4/file2.txt does not exist
* // dir1/file1.txt could have been deleted
* }
* }
*
*/
function eachLimit(coll, iteratee, callback) {
return (0, _eachOf2.default)(coll, (0, _withoutIndex2.default)((0, _wrapAsync2.default)(iteratee)), callback);
}
exports.default = (0, _awaitify2.default)(eachLimit, 3);
module.exports = exports['default'];
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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _eachOfLimit = require('./internal/eachOfLimit.js');
var _eachOfLimit2 = _interopRequireDefault(_eachOfLimit);
var _withoutIndex = require('./internal/withoutIndex.js');
var _withoutIndex2 = _interopRequireDefault(_withoutIndex);
var _wrapAsync = require('./internal/wrapAsync.js');
var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* The same as [`each`]{@link module:Collections.each} but runs a maximum of `limit` async operations at a time.
*
* @name eachLimit
* @static
* @memberOf module:Collections
* @method
* @see [async.each]{@link module:Collections.each}
* @alias forEachLimit
* @category Collection
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {number} limit - The maximum number of async operations at a time.
* @param {AsyncFunction} iteratee - An async function to apply to each item in
* `coll`.
* The array index is not passed to the iteratee.
* If you need the index, use `eachOfLimit`.
* Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called when all
* `iteratee` functions have finished, or an error occurs. Invoked with (err).
* @returns {Promise} a promise, if a callback is omitted
*/
function eachLimit(coll, limit, iteratee, callback) {
return (0, _eachOfLimit2.default)(limit)(coll, (0, _withoutIndex2.default)((0, _wrapAsync2.default)(iteratee)), callback);
}
exports.default = (0, _awaitify2.default)(eachLimit, 4);
module.exports = exports['default'];
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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _isArrayLike = require('./internal/isArrayLike.js');
var _isArrayLike2 = _interopRequireDefault(_isArrayLike);
var _breakLoop = require('./internal/breakLoop.js');
var _breakLoop2 = _interopRequireDefault(_breakLoop);
var _eachOfLimit = require('./eachOfLimit.js');
var _eachOfLimit2 = _interopRequireDefault(_eachOfLimit);
var _once = require('./internal/once.js');
var _once2 = _interopRequireDefault(_once);
var _onlyOnce = require('./internal/onlyOnce.js');
var _onlyOnce2 = _interopRequireDefault(_onlyOnce);
var _wrapAsync = require('./internal/wrapAsync.js');
var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
// eachOf implementation optimized for array-likes
function eachOfArrayLike(coll, iteratee, callback) {
callback = (0, _once2.default)(callback);
var index = 0,
completed = 0,
{ length } = coll,
canceled = false;
if (length === 0) {
callback(null);
}
function iteratorCallback(err, value) {
if (err === false) {
canceled = true;
}
if (canceled === true) return;
if (err) {
callback(err);
} else if (++completed === length || value === _breakLoop2.default) {
callback(null);
}
}
for (; index < length; index++) {
iteratee(coll[index], index, (0, _onlyOnce2.default)(iteratorCallback));
}
}
// a generic version of eachOf which can handle array, object, and iterator cases.
function eachOfGeneric(coll, iteratee, callback) {
return (0, _eachOfLimit2.default)(coll, Infinity, iteratee, callback);
}
/**
* Like [`each`]{@link module:Collections.each}, except that it passes the key (or index) as the second argument
* to the iteratee.
*
* @name eachOf
* @static
* @memberOf module:Collections
* @method
* @alias forEachOf
* @category Collection
* @see [async.each]{@link module:Collections.each}
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {AsyncFunction} iteratee - A function to apply to each
* item in `coll`.
* The `key` is the item's key, or index in the case of an array.
* Invoked with (item, key, callback).
* @param {Function} [callback] - A callback which is called when all
* `iteratee` functions have finished, or an error occurs. Invoked with (err).
* @returns {Promise} a promise, if a callback is omitted
* @example
*
* // dev.json is a file containing a valid json object config for dev environment
* // dev.json is a file containing a valid json object config for test environment
* // prod.json is a file containing a valid json object config for prod environment
* // invalid.json is a file with a malformed json object
*
* let configs = {}; //global variable
* let validConfigFileMap = {dev: 'dev.json', test: 'test.json', prod: 'prod.json'};
* let invalidConfigFileMap = {dev: 'dev.json', test: 'test.json', invalid: 'invalid.json'};
*
* // asynchronous function that reads a json file and parses the contents as json object
* function parseFile(file, key, callback) {
* fs.readFile(file, "utf8", function(err, data) {
* if (err) return calback(err);
* try {
* configs[key] = JSON.parse(data);
* } catch (e) {
* return callback(e);
* }
* callback();
* });
* }
*
* // Using callbacks
* async.forEachOf(validConfigFileMap, parseFile, function (err) {
* if (err) {
* console.error(err);
* } else {
* console.log(configs);
* // configs is now a map of JSON data, e.g.
* // { dev: //parsed dev.json, test: //parsed test.json, prod: //parsed prod.json}
* }
* });
*
* //Error handing
* async.forEachOf(invalidConfigFileMap, parseFile, function (err) {
* if (err) {
* console.error(err);
* // JSON parse error exception
* } else {
* console.log(configs);
* }
* });
*
* // Using Promises
* async.forEachOf(validConfigFileMap, parseFile)
* .then( () => {
* console.log(configs);
* // configs is now a map of JSON data, e.g.
* // { dev: //parsed dev.json, test: //parsed test.json, prod: //parsed prod.json}
* }).catch( err => {
* console.error(err);
* });
*
* //Error handing
* async.forEachOf(invalidConfigFileMap, parseFile)
* .then( () => {
* console.log(configs);
* }).catch( err => {
* console.error(err);
* // JSON parse error exception
* });
*
* // Using async/await
* async () => {
* try {
* let result = await async.forEachOf(validConfigFileMap, parseFile);
* console.log(configs);
* // configs is now a map of JSON data, e.g.
* // { dev: //parsed dev.json, test: //parsed test.json, prod: //parsed prod.json}
* }
* catch (err) {
* console.log(err);
* }
* }
*
* //Error handing
* async () => {
* try {
* let result = await async.forEachOf(invalidConfigFileMap, parseFile);
* console.log(configs);
* }
* catch (err) {
* console.log(err);
* // JSON parse error exception
* }
* }
*
*/
function eachOf(coll, iteratee, callback) {
var eachOfImplementation = (0, _isArrayLike2.default)(coll) ? eachOfArrayLike : eachOfGeneric;
return eachOfImplementation(coll, (0, _wrapAsync2.default)(iteratee), callback);
}
exports.default = (0, _awaitify2.default)(eachOf, 3);
module.exports = exports['default'];
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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _eachOfLimit2 = require('./internal/eachOfLimit.js');
var _eachOfLimit3 = _interopRequireDefault(_eachOfLimit2);
var _wrapAsync = require('./internal/wrapAsync.js');
var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* The same as [`eachOf`]{@link module:Collections.eachOf} but runs a maximum of `limit` async operations at a
* time.
*
* @name eachOfLimit
* @static
* @memberOf module:Collections
* @method
* @see [async.eachOf]{@link module:Collections.eachOf}
* @alias forEachOfLimit
* @category Collection
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {number} limit - The maximum number of async operations at a time.
* @param {AsyncFunction} iteratee - An async function to apply to each
* item in `coll`. The `key` is the item's key, or index in the case of an
* array.
* Invoked with (item, key, callback).
* @param {Function} [callback] - A callback which is called when all
* `iteratee` functions have finished, or an error occurs. Invoked with (err).
* @returns {Promise} a promise, if a callback is omitted
*/
function eachOfLimit(coll, limit, iteratee, callback) {
return (0, _eachOfLimit3.default)(limit)(coll, (0, _wrapAsync2.default)(iteratee), callback);
}
exports.default = (0, _awaitify2.default)(eachOfLimit, 4);
module.exports = exports['default'];
\ No newline at end of file
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _eachOfLimit = require('./eachOfLimit.js');
var _eachOfLimit2 = _interopRequireDefault(_eachOfLimit);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* The same as [`eachOf`]{@link module:Collections.eachOf} but runs only a single async operation at a time.
*
* @name eachOfSeries
* @static
* @memberOf module:Collections
* @method
* @see [async.eachOf]{@link module:Collections.eachOf}
* @alias forEachOfSeries
* @category Collection
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {AsyncFunction} iteratee - An async function to apply to each item in
* `coll`.
* Invoked with (item, key, callback).
* @param {Function} [callback] - A callback which is called when all `iteratee`
* functions have finished, or an error occurs. Invoked with (err).
* @returns {Promise} a promise, if a callback is omitted
*/
function eachOfSeries(coll, iteratee, callback) {
return (0, _eachOfLimit2.default)(coll, 1, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(eachOfSeries, 3);
module.exports = exports['default'];
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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _eachLimit = require('./eachLimit.js');
var _eachLimit2 = _interopRequireDefault(_eachLimit);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* The same as [`each`]{@link module:Collections.each} but runs only a single async operation at a time.
*
* Note, that unlike [`each`]{@link module:Collections.each}, this function applies iteratee to each item
* in series and therefore the iteratee functions will complete in order.
* @name eachSeries
* @static
* @memberOf module:Collections
* @method
* @see [async.each]{@link module:Collections.each}
* @alias forEachSeries
* @category Collection
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {AsyncFunction} iteratee - An async function to apply to each
* item in `coll`.
* The array index is not passed to the iteratee.
* If you need the index, use `eachOfSeries`.
* Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called when all
* `iteratee` functions have finished, or an error occurs. Invoked with (err).
* @returns {Promise} a promise, if a callback is omitted
*/
function eachSeries(coll, iteratee, callback) {
return (0, _eachLimit2.default)(coll, 1, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(eachSeries, 3);
module.exports = exports['default'];
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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = ensureAsync;
var _setImmediate = require('./internal/setImmediate.js');
var _setImmediate2 = _interopRequireDefault(_setImmediate);
var _wrapAsync = require('./internal/wrapAsync.js');
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Wrap an async function and ensure it calls its callback on a later tick of
* the event loop. If the function already calls its callback on a next tick,
* no extra deferral is added. This is useful for preventing stack overflows
* (`RangeError: Maximum call stack size exceeded`) and generally keeping
* [Zalgo](http://blog.izs.me/post/59142742143/designing-apis-for-asynchrony)
* contained. ES2017 `async` functions are returned as-is -- they are immune
* to Zalgo's corrupting influences, as they always resolve on a later tick.
*
* @name ensureAsync
* @static
* @memberOf module:Utils
* @method
* @category Util
* @param {AsyncFunction} fn - an async function, one that expects a node-style
* callback as its last argument.
* @returns {AsyncFunction} Returns a wrapped function with the exact same call
* signature as the function passed in.
* @example
*
* function sometimesAsync(arg, callback) {
* if (cache[arg]) {
* return callback(null, cache[arg]); // this would be synchronous!!
* } else {
* doSomeIO(arg, callback); // this IO would be asynchronous
* }
* }
*
* // this has a risk of stack overflows if many results are cached in a row
* async.mapSeries(args, sometimesAsync, done);
*
* // this will defer sometimesAsync's callback if necessary,
* // preventing stack overflows
* async.mapSeries(args, async.ensureAsync(sometimesAsync), done);
*/
function ensureAsync(fn) {
if ((0, _wrapAsync.isAsync)(fn)) return fn;
return function (...args /*, callback*/) {
var callback = args.pop();
var sync = true;
args.push((...innerArgs) => {
if (sync) {
(0, _setImmediate2.default)(() => callback(...innerArgs));
} else {
callback(...innerArgs);
}
});
fn.apply(this, args);
sync = false;
};
}
module.exports = exports['default'];
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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createTester = require('./internal/createTester.js');
var _createTester2 = _interopRequireDefault(_createTester);
var _eachOf = require('./eachOf.js');
var _eachOf2 = _interopRequireDefault(_eachOf);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Returns `true` if every element in `coll` satisfies an async test. If any
* iteratee call returns `false`, the main `callback` is immediately called.
*
* @name every
* @static
* @memberOf module:Collections
* @method
* @alias all
* @category Collection
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {AsyncFunction} iteratee - An async truth test to apply to each item
* in the collection in parallel.
* The iteratee must complete with a boolean result value.
* Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called after all the
* `iteratee` functions have finished. Result will be either `true` or `false`
* depending on the values of the async tests. Invoked with (err, result).
* @returns {Promise} a promise, if no callback provided
* @example
*
* // dir1 is a directory that contains file1.txt, file2.txt
* // dir2 is a directory that contains file3.txt, file4.txt
* // dir3 is a directory that contains file5.txt
* // dir4 does not exist
*
* const fileList = ['dir1/file1.txt','dir2/file3.txt','dir3/file5.txt'];
* const withMissingFileList = ['file1.txt','file2.txt','file4.txt'];
*
* // asynchronous function that checks if a file exists
* function fileExists(file, callback) {
* fs.access(file, fs.constants.F_OK, (err) => {
* callback(null, !err);
* });
* }
*
* // Using callbacks
* async.every(fileList, fileExists, function(err, result) {
* console.log(result);
* // true
* // result is true since every file exists
* });
*
* async.every(withMissingFileList, fileExists, function(err, result) {
* console.log(result);
* // false
* // result is false since NOT every file exists
* });
*
* // Using Promises
* async.every(fileList, fileExists)
* .then( result => {
* console.log(result);
* // true
* // result is true since every file exists
* }).catch( err => {
* console.log(err);
* });
*
* async.every(withMissingFileList, fileExists)
* .then( result => {
* console.log(result);
* // false
* // result is false since NOT every file exists
* }).catch( err => {
* console.log(err);
* });
*
* // Using async/await
* async () => {
* try {
* let result = await async.every(fileList, fileExists);
* console.log(result);
* // true
* // result is true since every file exists
* }
* catch (err) {
* console.log(err);
* }
* }
*
* async () => {
* try {
* let result = await async.every(withMissingFileList, fileExists);
* console.log(result);
* // false
* // result is false since NOT every file exists
* }
* catch (err) {
* console.log(err);
* }
* }
*
*/
function every(coll, iteratee, callback) {
return (0, _createTester2.default)(bool => !bool, res => !res)(_eachOf2.default, coll, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(every, 3);
module.exports = exports['default'];
\ No newline at end of file
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createTester = require('./internal/createTester.js');
var _createTester2 = _interopRequireDefault(_createTester);
var _eachOfLimit = require('./internal/eachOfLimit.js');
var _eachOfLimit2 = _interopRequireDefault(_eachOfLimit);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* The same as [`every`]{@link module:Collections.every} but runs a maximum of `limit` async operations at a time.
*
* @name everyLimit
* @static
* @memberOf module:Collections
* @method
* @see [async.every]{@link module:Collections.every}
* @alias allLimit
* @category Collection
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {number} limit - The maximum number of async operations at a time.
* @param {AsyncFunction} iteratee - An async truth test to apply to each item
* in the collection in parallel.
* The iteratee must complete with a boolean result value.
* Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called after all the
* `iteratee` functions have finished. Result will be either `true` or `false`
* depending on the values of the async tests. Invoked with (err, result).
* @returns {Promise} a promise, if no callback provided
*/
function everyLimit(coll, limit, iteratee, callback) {
return (0, _createTester2.default)(bool => !bool, res => !res)((0, _eachOfLimit2.default)(limit), coll, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(everyLimit, 4);
module.exports = exports['default'];
\ No newline at end of file
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createTester = require('./internal/createTester.js');
var _createTester2 = _interopRequireDefault(_createTester);
var _eachOfSeries = require('./eachOfSeries.js');
var _eachOfSeries2 = _interopRequireDefault(_eachOfSeries);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* The same as [`every`]{@link module:Collections.every} but runs only a single async operation at a time.
*
* @name everySeries
* @static
* @memberOf module:Collections
* @method
* @see [async.every]{@link module:Collections.every}
* @alias allSeries
* @category Collection
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {AsyncFunction} iteratee - An async truth test to apply to each item
* in the collection in series.
* The iteratee must complete with a boolean result value.
* Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called after all the
* `iteratee` functions have finished. Result will be either `true` or `false`
* depending on the values of the async tests. Invoked with (err, result).
* @returns {Promise} a promise, if no callback provided
*/
function everySeries(coll, iteratee, callback) {
return (0, _createTester2.default)(bool => !bool, res => !res)(_eachOfSeries2.default, coll, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(everySeries, 3);
module.exports = exports['default'];
\ No newline at end of file
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _filter2 = require('./internal/filter.js');
var _filter3 = _interopRequireDefault(_filter2);
var _eachOf = require('./eachOf.js');
var _eachOf2 = _interopRequireDefault(_eachOf);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Returns a new array of all the values in `coll` which pass an async truth
* test. This operation is performed in parallel, but the results array will be
* in the same order as the original.
*
* @name filter
* @static
* @memberOf module:Collections
* @method
* @alias select
* @category Collection
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {Function} iteratee - A truth test to apply to each item in `coll`.
* The `iteratee` is passed a `callback(err, truthValue)`, which must be called
* with a boolean argument once it has completed. Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called after all the
* `iteratee` functions have finished. Invoked with (err, results).
* @returns {Promise} a promise, if no callback provided
* @example
*
* // dir1 is a directory that contains file1.txt, file2.txt
* // dir2 is a directory that contains file3.txt, file4.txt
* // dir3 is a directory that contains file5.txt
*
* const files = ['dir1/file1.txt','dir2/file3.txt','dir3/file6.txt'];
*
* // asynchronous function that checks if a file exists
* function fileExists(file, callback) {
* fs.access(file, fs.constants.F_OK, (err) => {
* callback(null, !err);
* });
* }
*
* // Using callbacks
* async.filter(files, fileExists, function(err, results) {
* if(err) {
* console.log(err);
* } else {
* console.log(results);
* // [ 'dir1/file1.txt', 'dir2/file3.txt' ]
* // results is now an array of the existing files
* }
* });
*
* // Using Promises
* async.filter(files, fileExists)
* .then(results => {
* console.log(results);
* // [ 'dir1/file1.txt', 'dir2/file3.txt' ]
* // results is now an array of the existing files
* }).catch(err => {
* console.log(err);
* });
*
* // Using async/await
* async () => {
* try {
* let results = await async.filter(files, fileExists);
* console.log(results);
* // [ 'dir1/file1.txt', 'dir2/file3.txt' ]
* // results is now an array of the existing files
* }
* catch (err) {
* console.log(err);
* }
* }
*
*/
function filter(coll, iteratee, callback) {
return (0, _filter3.default)(_eachOf2.default, coll, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(filter, 3);
module.exports = exports['default'];
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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _filter2 = require('./internal/filter.js');
var _filter3 = _interopRequireDefault(_filter2);
var _eachOfLimit = require('./internal/eachOfLimit.js');
var _eachOfLimit2 = _interopRequireDefault(_eachOfLimit);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* The same as [`filter`]{@link module:Collections.filter} but runs a maximum of `limit` async operations at a
* time.
*
* @name filterLimit
* @static
* @memberOf module:Collections
* @method
* @see [async.filter]{@link module:Collections.filter}
* @alias selectLimit
* @category Collection
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {number} limit - The maximum number of async operations at a time.
* @param {Function} iteratee - A truth test to apply to each item in `coll`.
* The `iteratee` is passed a `callback(err, truthValue)`, which must be called
* with a boolean argument once it has completed. Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called after all the
* `iteratee` functions have finished. Invoked with (err, results).
* @returns {Promise} a promise, if no callback provided
*/
function filterLimit(coll, limit, iteratee, callback) {
return (0, _filter3.default)((0, _eachOfLimit2.default)(limit), coll, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(filterLimit, 4);
module.exports = exports['default'];
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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _filter2 = require('./internal/filter.js');
var _filter3 = _interopRequireDefault(_filter2);
var _eachOfSeries = require('./eachOfSeries.js');
var _eachOfSeries2 = _interopRequireDefault(_eachOfSeries);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* The same as [`filter`]{@link module:Collections.filter} but runs only a single async operation at a time.
*
* @name filterSeries
* @static
* @memberOf module:Collections
* @method
* @see [async.filter]{@link module:Collections.filter}
* @alias selectSeries
* @category Collection
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {Function} iteratee - A truth test to apply to each item in `coll`.
* The `iteratee` is passed a `callback(err, truthValue)`, which must be called
* with a boolean argument once it has completed. Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called after all the
* `iteratee` functions have finished. Invoked with (err, results)
* @returns {Promise} a promise, if no callback provided
*/
function filterSeries(coll, iteratee, callback) {
return (0, _filter3.default)(_eachOfSeries2.default, coll, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(filterSeries, 3);
module.exports = exports['default'];
\ No newline at end of file
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createTester = require('./internal/createTester.js');
var _createTester2 = _interopRequireDefault(_createTester);
var _eachOf = require('./eachOf.js');
var _eachOf2 = _interopRequireDefault(_eachOf);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Returns the first value in `coll` that passes an async truth test. The
* `iteratee` is applied in parallel, meaning the first iteratee to return
* `true` will fire the detect `callback` with that result. That means the
* result might not be the first item in the original `coll` (in terms of order)
* that passes the test.
* If order within the original `coll` is important, then look at
* [`detectSeries`]{@link module:Collections.detectSeries}.
*
* @name detect
* @static
* @memberOf module:Collections
* @method
* @alias find
* @category Collections
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {AsyncFunction} iteratee - A truth test to apply to each item in `coll`.
* The iteratee must complete with a boolean value as its result.
* Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called as soon as any
* iteratee returns `true`, or after all the `iteratee` functions have finished.
* Result will be the first item in the array that passes the truth test
* (iteratee) or the value `undefined` if none passed. Invoked with
* (err, result).
* @returns {Promise} a promise, if a callback is omitted
* @example
*
* // dir1 is a directory that contains file1.txt, file2.txt
* // dir2 is a directory that contains file3.txt, file4.txt
* // dir3 is a directory that contains file5.txt
*
* // asynchronous function that checks if a file exists
* function fileExists(file, callback) {
* fs.access(file, fs.constants.F_OK, (err) => {
* callback(null, !err);
* });
* }
*
* async.detect(['file3.txt','file2.txt','dir1/file1.txt'], fileExists,
* function(err, result) {
* console.log(result);
* // dir1/file1.txt
* // result now equals the first file in the list that exists
* }
*);
*
* // Using Promises
* async.detect(['file3.txt','file2.txt','dir1/file1.txt'], fileExists)
* .then(result => {
* console.log(result);
* // dir1/file1.txt
* // result now equals the first file in the list that exists
* }).catch(err => {
* console.log(err);
* });
*
* // Using async/await
* async () => {
* try {
* let result = await async.detect(['file3.txt','file2.txt','dir1/file1.txt'], fileExists);
* console.log(result);
* // dir1/file1.txt
* // result now equals the file in the list that exists
* }
* catch (err) {
* console.log(err);
* }
* }
*
*/
function detect(coll, iteratee, callback) {
return (0, _createTester2.default)(bool => bool, (res, item) => item)(_eachOf2.default, coll, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(detect, 3);
module.exports = exports['default'];
\ No newline at end of file
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createTester = require('./internal/createTester.js');
var _createTester2 = _interopRequireDefault(_createTester);
var _eachOfLimit = require('./internal/eachOfLimit.js');
var _eachOfLimit2 = _interopRequireDefault(_eachOfLimit);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* The same as [`detect`]{@link module:Collections.detect} but runs a maximum of `limit` async operations at a
* time.
*
* @name detectLimit
* @static
* @memberOf module:Collections
* @method
* @see [async.detect]{@link module:Collections.detect}
* @alias findLimit
* @category Collections
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {number} limit - The maximum number of async operations at a time.
* @param {AsyncFunction} iteratee - A truth test to apply to each item in `coll`.
* The iteratee must complete with a boolean value as its result.
* Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called as soon as any
* iteratee returns `true`, or after all the `iteratee` functions have finished.
* Result will be the first item in the array that passes the truth test
* (iteratee) or the value `undefined` if none passed. Invoked with
* (err, result).
* @returns {Promise} a promise, if a callback is omitted
*/
function detectLimit(coll, limit, iteratee, callback) {
return (0, _createTester2.default)(bool => bool, (res, item) => item)((0, _eachOfLimit2.default)(limit), coll, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(detectLimit, 4);
module.exports = exports['default'];
\ No newline at end of file
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createTester = require('./internal/createTester.js');
var _createTester2 = _interopRequireDefault(_createTester);
var _eachOfLimit = require('./internal/eachOfLimit.js');
var _eachOfLimit2 = _interopRequireDefault(_eachOfLimit);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* The same as [`detect`]{@link module:Collections.detect} but runs only a single async operation at a time.
*
* @name detectSeries
* @static
* @memberOf module:Collections
* @method
* @see [async.detect]{@link module:Collections.detect}
* @alias findSeries
* @category Collections
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {AsyncFunction} iteratee - A truth test to apply to each item in `coll`.
* The iteratee must complete with a boolean value as its result.
* Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called as soon as any
* iteratee returns `true`, or after all the `iteratee` functions have finished.
* Result will be the first item in the array that passes the truth test
* (iteratee) or the value `undefined` if none passed. Invoked with
* (err, result).
* @returns {Promise} a promise, if a callback is omitted
*/
function detectSeries(coll, iteratee, callback) {
return (0, _createTester2.default)(bool => bool, (res, item) => item)((0, _eachOfLimit2.default)(1), coll, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(detectSeries, 3);
module.exports = exports['default'];
\ No newline at end of file
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _concatLimit = require('./concatLimit.js');
var _concatLimit2 = _interopRequireDefault(_concatLimit);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Applies `iteratee` to each item in `coll`, concatenating the results. Returns
* the concatenated list. The `iteratee`s are called in parallel, and the
* results are concatenated as they return. The results array will be returned in
* the original order of `coll` passed to the `iteratee` function.
*
* @name concat
* @static
* @memberOf module:Collections
* @method
* @category Collection
* @alias flatMap
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {AsyncFunction} iteratee - A function to apply to each item in `coll`,
* which should use an array as its result. Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called after all the
* `iteratee` functions have finished, or an error occurs. Results is an array
* containing the concatenated results of the `iteratee` function. Invoked with
* (err, results).
* @returns A Promise, if no callback is passed
* @example
*
* // dir1 is a directory that contains file1.txt, file2.txt
* // dir2 is a directory that contains file3.txt, file4.txt
* // dir3 is a directory that contains file5.txt
* // dir4 does not exist
*
* let directoryList = ['dir1','dir2','dir3'];
* let withMissingDirectoryList = ['dir1','dir2','dir3', 'dir4'];
*
* // Using callbacks
* async.concat(directoryList, fs.readdir, function(err, results) {
* if (err) {
* console.log(err);
* } else {
* console.log(results);
* // [ 'file1.txt', 'file2.txt', 'file3.txt', 'file4.txt', file5.txt ]
* }
* });
*
* // Error Handling
* async.concat(withMissingDirectoryList, fs.readdir, function(err, results) {
* if (err) {
* console.log(err);
* // [ Error: ENOENT: no such file or directory ]
* // since dir4 does not exist
* } else {
* console.log(results);
* }
* });
*
* // Using Promises
* async.concat(directoryList, fs.readdir)
* .then(results => {
* console.log(results);
* // [ 'file1.txt', 'file2.txt', 'file3.txt', 'file4.txt', file5.txt ]
* }).catch(err => {
* console.log(err);
* });
*
* // Error Handling
* async.concat(withMissingDirectoryList, fs.readdir)
* .then(results => {
* console.log(results);
* }).catch(err => {
* console.log(err);
* // [ Error: ENOENT: no such file or directory ]
* // since dir4 does not exist
* });
*
* // Using async/await
* async () => {
* try {
* let results = await async.concat(directoryList, fs.readdir);
* console.log(results);
* // [ 'file1.txt', 'file2.txt', 'file3.txt', 'file4.txt', file5.txt ]
* } catch (err) {
* console.log(err);
* }
* }
*
* // Error Handling
* async () => {
* try {
* let results = await async.concat(withMissingDirectoryList, fs.readdir);
* console.log(results);
* } catch (err) {
* console.log(err);
* // [ Error: ENOENT: no such file or directory ]
* // since dir4 does not exist
* }
* }
*
*/
function concat(coll, iteratee, callback) {
return (0, _concatLimit2.default)(coll, Infinity, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(concat, 3);
module.exports = exports['default'];
\ No newline at end of file
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _wrapAsync = require('./internal/wrapAsync.js');
var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
var _mapLimit = require('./mapLimit.js');
var _mapLimit2 = _interopRequireDefault(_mapLimit);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* The same as [`concat`]{@link module:Collections.concat} but runs a maximum of `limit` async operations at a time.
*
* @name concatLimit
* @static
* @memberOf module:Collections
* @method
* @see [async.concat]{@link module:Collections.concat}
* @category Collection
* @alias flatMapLimit
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {number} limit - The maximum number of async operations at a time.
* @param {AsyncFunction} iteratee - A function to apply to each item in `coll`,
* which should use an array as its result. Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called after all the
* `iteratee` functions have finished, or an error occurs. Results is an array
* containing the concatenated results of the `iteratee` function. Invoked with
* (err, results).
* @returns A Promise, if no callback is passed
*/
function concatLimit(coll, limit, iteratee, callback) {
var _iteratee = (0, _wrapAsync2.default)(iteratee);
return (0, _mapLimit2.default)(coll, limit, (val, iterCb) => {
_iteratee(val, (err, ...args) => {
if (err) return iterCb(err);
return iterCb(err, args);
});
}, (err, mapResults) => {
var result = [];
for (var i = 0; i < mapResults.length; i++) {
if (mapResults[i]) {
result = result.concat(...mapResults[i]);
}
}
return callback(err, result);
});
}
exports.default = (0, _awaitify2.default)(concatLimit, 4);
module.exports = exports['default'];
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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _concatLimit = require('./concatLimit.js');
var _concatLimit2 = _interopRequireDefault(_concatLimit);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* The same as [`concat`]{@link module:Collections.concat} but runs only a single async operation at a time.
*
* @name concatSeries
* @static
* @memberOf module:Collections
* @method
* @see [async.concat]{@link module:Collections.concat}
* @category Collection
* @alias flatMapSeries
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {AsyncFunction} iteratee - A function to apply to each item in `coll`.
* The iteratee should complete with an array an array of results.
* Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called after all the
* `iteratee` functions have finished, or an error occurs. Results is an array
* containing the concatenated results of the `iteratee` function. Invoked with
* (err, results).
* @returns A Promise, if no callback is passed
*/
function concatSeries(coll, iteratee, callback) {
return (0, _concatLimit2.default)(coll, 1, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(concatSeries, 3);
module.exports = exports['default'];
\ No newline at end of file
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _eachOfSeries = require('./eachOfSeries.js');
var _eachOfSeries2 = _interopRequireDefault(_eachOfSeries);
var _once = require('./internal/once.js');
var _once2 = _interopRequireDefault(_once);
var _wrapAsync = require('./internal/wrapAsync.js');
var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
var _awaitify = require('./internal/awaitify.js');
var _awaitify2 = _interopRequireDefault(_awaitify);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Reduces `coll` into a single value using an async `iteratee` to return each
* successive step. `memo` is the initial state of the reduction. This function
* only operates in series.
*
* For performance reasons, it may make sense to split a call to this function
* into a parallel map, and then use the normal `Array.prototype.reduce` on the
* results. This function is for situations where each step in the reduction
* needs to be async; if you can get the data before reducing it, then it's
* probably a good idea to do so.
*
* @name reduce
* @static
* @memberOf module:Collections
* @method
* @alias inject
* @alias foldl
* @category Collection
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
* @param {*} memo - The initial state of the reduction.
* @param {AsyncFunction} iteratee - A function applied to each item in the
* array to produce the next step in the reduction.
* The `iteratee` should complete with the next state of the reduction.
* If the iteratee completes with an error, the reduction is stopped and the
* main `callback` is immediately called with the error.
* Invoked with (memo, item, callback).
* @param {Function} [callback] - A callback which is called after all the
* `iteratee` functions have finished. Result is the reduced value. Invoked with
* (err, result).
* @returns {Promise} a promise, if no callback is passed
* @example
*
* // file1.txt is a file that is 1000 bytes in size
* // file2.txt is a file that is 2000 bytes in size
* // file3.txt is a file that is 3000 bytes in size
* // file4.txt does not exist
*
* const fileList = ['file1.txt','file2.txt','file3.txt'];
* const withMissingFileList = ['file1.txt','file2.txt','file3.txt', 'file4.txt'];
*
* // asynchronous function that computes the file size in bytes
* // file size is added to the memoized value, then returned
* function getFileSizeInBytes(memo, file, callback) {
* fs.stat(file, function(err, stat) {
* if (err) {
* return callback(err);
* }
* callback(null, memo + stat.size);
* });
* }
*
* // Using callbacks
* async.reduce(fileList, 0, getFileSizeInBytes, function(err, result) {
* if (err) {
* console.log(err);
* } else {
* console.log(result);
* // 6000
* // which is the sum of the file sizes of the three files
* }
* });
*
* // Error Handling
* async.reduce(withMissingFileList, 0, getFileSizeInBytes, function(err, result) {
* if (err) {
* console.log(err);
* // [ Error: ENOENT: no such file or directory ]
* } else {
* console.log(result);
* }
* });
*
* // Using Promises
* async.reduce(fileList, 0, getFileSizeInBytes)
* .then( result => {
* console.log(result);
* // 6000
* // which is the sum of the file sizes of the three files
* }).catch( err => {
* console.log(err);
* });
*
* // Error Handling
* async.reduce(withMissingFileList, 0, getFileSizeInBytes)
* .then( result => {
* console.log(result);
* }).catch( err => {
* console.log(err);
* // [ Error: ENOENT: no such file or directory ]
* });
*
* // Using async/await
* async () => {
* try {
* let result = await async.reduce(fileList, 0, getFileSizeInBytes);
* console.log(result);
* // 6000
* // which is the sum of the file sizes of the three files
* }
* catch (err) {
* console.log(err);
* }
* }
*
* // Error Handling
* async () => {
* try {
* let result = await async.reduce(withMissingFileList, 0, getFileSizeInBytes);
* console.log(result);
* }
* catch (err) {
* console.log(err);
* // [ Error: ENOENT: no such file or directory ]
* }
* }
*
*/
function reduce(coll, memo, iteratee, callback) {
callback = (0, _once2.default)(callback);
var _iteratee = (0, _wrapAsync2.default)(iteratee);
return (0, _eachOfSeries2.default)(coll, (x, i, iterCb) => {
_iteratee(memo, x, (err, v) => {
memo = v;
iterCb(err);
});
}, err => callback(err, memo));
}
exports.default = (0, _awaitify2.default)(reduce, 4);
module.exports = exports['default'];
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