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author | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
commit | de98e0b232509d5f40c135d540a70e415272ff85 (patch) | |
tree | a79222a5b58484ab3b80d18efcaaa7ccc4769b33 /node_modules/async/groupByLimit.js | |
parent | e0c9d480a73fa629c1e4a47d3e721f1d2d345406 (diff) |
node_modules
Diffstat (limited to 'node_modules/async/groupByLimit.js')
-rw-r--r-- | node_modules/async/groupByLimit.js | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/node_modules/async/groupByLimit.js b/node_modules/async/groupByLimit.js new file mode 100644 index 000000000..fec13f865 --- /dev/null +++ b/node_modules/async/groupByLimit.js @@ -0,0 +1,71 @@ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); + +exports.default = function (coll, limit, iteratee, callback) { + callback = callback || _noop2.default; + var _iteratee = (0, _wrapAsync2.default)(iteratee); + (0, _mapLimit2.default)(coll, limit, function (val, callback) { + _iteratee(val, function (err, key) { + if (err) return callback(err); + return callback(null, { key: key, val: val }); + }); + }, function (err, mapResults) { + var result = {}; + // from MDN, handle object having an `hasOwnProperty` prop + var hasOwnProperty = Object.prototype.hasOwnProperty; + + for (var i = 0; i < mapResults.length; i++) { + if (mapResults[i]) { + var key = mapResults[i].key; + var val = mapResults[i].val; + + if (hasOwnProperty.call(result, key)) { + result[key].push(val); + } else { + result[key] = [val]; + } + } + } + + return callback(err, result); + }); +}; + +var _noop = require('lodash/noop'); + +var _noop2 = _interopRequireDefault(_noop); + +var _mapLimit = require('./mapLimit'); + +var _mapLimit2 = _interopRequireDefault(_mapLimit); + +var _wrapAsync = require('./internal/wrapAsync'); + +var _wrapAsync2 = _interopRequireDefault(_wrapAsync); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +; +/** + * The same as [`groupBy`]{@link module:Collections.groupBy} but runs a maximum of `limit` async operations at a time. + * + * @name groupByLimit + * @static + * @memberOf module:Collections + * @method + * @see [async.groupBy]{@link module:Collections.groupBy} + * @category Collection + * @param {Array|Iterable|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 iteratee should complete with a `key` to group the value under. + * Invoked with (value, callback). + * @param {Function} [callback] - A callback which is called when all `iteratee` + * functions have finished, or an error occurs. Result is an `Object` whoses + * properties are arrays of values which returned the corresponding key. + */ +module.exports = exports['default'];
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