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Diffstat (limited to 'node_modules/async/autoInject.js')
| -rw-r--r-- | node_modules/async/autoInject.js | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/node_modules/async/autoInject.js b/node_modules/async/autoInject.js deleted file mode 100644 index b9d1eaac9..000000000 --- a/node_modules/async/autoInject.js +++ /dev/null @@ -1,167 +0,0 @@ -'use strict'; - -Object.defineProperty(exports, "__esModule", { - value: true -}); -exports.default = autoInject; - -var _auto = require('./auto'); - -var _auto2 = _interopRequireDefault(_auto); - -var _baseForOwn = require('lodash/_baseForOwn'); - -var _baseForOwn2 = _interopRequireDefault(_baseForOwn); - -var _arrayMap = require('lodash/_arrayMap'); - -var _arrayMap2 = _interopRequireDefault(_arrayMap); - -var _copyArray = require('lodash/_copyArray'); - -var _copyArray2 = _interopRequireDefault(_copyArray); - -var _isArray = require('lodash/isArray'); - -var _isArray2 = _interopRequireDefault(_isArray); - -var _trim = require('lodash/trim'); - -var _trim2 = _interopRequireDefault(_trim); - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } - -var FN_ARGS = /^(function)?\s*[^\(]*\(\s*([^\)]*)\)/m; -var FN_ARG_SPLIT = /,/; -var FN_ARG = /(=.+)?(\s*)$/; -var STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg; - -function parseParams(func) { - func = func.toString().replace(STRIP_COMMENTS, ''); - func = func.match(FN_ARGS)[2].replace(' ', ''); - func = func ? func.split(FN_ARG_SPLIT) : []; - func = func.map(function (arg) { - return (0, _trim2.default)(arg.replace(FN_ARG, '')); - }); - return func; -} - -/** - * A dependency-injected version of the [async.auto]{@link module:ControlFlow.auto} function. Dependent - * tasks are specified as parameters to the function, after the usual callback - * parameter, with the parameter names matching the names of the tasks it - * depends on. This can provide even more readable task graphs which can be - * easier to maintain. - * - * If a final callback is specified, the task results are similarly injected, - * specified as named parameters after the initial error parameter. - * - * The autoInject function is purely syntactic sugar and its semantics are - * otherwise equivalent to [async.auto]{@link module:ControlFlow.auto}. - * - * @name autoInject - * @static - * @memberOf module:ControlFlow - * @method - * @see [async.auto]{@link module:ControlFlow.auto} - * @category Control Flow - * @param {Object} tasks - An object, each of whose properties is a function of - * the form 'func([dependencies...], callback). The object's key of a property - * serves as the name of the task defined by that property, i.e. can be used - * when specifying requirements for other tasks. - * * The `callback` parameter is a `callback(err, result)` which must be called - * when finished, passing an `error` (which can be `null`) and the result of - * the function's execution. The remaining parameters name other tasks on - * which the task is dependent, and the results from those tasks are the - * arguments of those parameters. - * @param {Function} [callback] - An optional callback which is called when all - * the tasks have been completed. It receives the `err` argument if any `tasks` - * pass an error to their callback, and a `results` object with any completed - * task results, similar to `auto`. - * @example - * - * // The example from `auto` can be rewritten as follows: - * async.autoInject({ - * get_data: function(callback) { - * // async code to get some data - * callback(null, 'data', 'converted to array'); - * }, - * make_folder: function(callback) { - * // async code to create a directory to store a file in - * // this is run at the same time as getting the data - * callback(null, 'folder'); - * }, - * write_file: function(get_data, make_folder, callback) { - * // once there is some data and the directory exists, - * // write the data to a file in the directory - * callback(null, 'filename'); - * }, - * email_link: function(write_file, callback) { - * // once the file is written let's email a link to it... - * // write_file contains the filename returned by write_file. - * callback(null, {'file':write_file, 'email':'user@example.com'}); - * } - * }, function(err, results) { - * console.log('err = ', err); - * console.log('email_link = ', results.email_link); - * }); - * - * // If you are using a JS minifier that mangles parameter names, `autoInject` - * // will not work with plain functions, since the parameter names will be - * // collapsed to a single letter identifier. To work around this, you can - * // explicitly specify the names of the parameters your task function needs - * // in an array, similar to Angular.js dependency injection. - * - * // This still has an advantage over plain `auto`, since the results a task - * // depends on are still spread into arguments. - * async.autoInject({ - * //... - * write_file: ['get_data', 'make_folder', function(get_data, make_folder, callback) { - * callback(null, 'filename'); - * }], - * email_link: ['write_file', function(write_file, callback) { - * callback(null, {'file':write_file, 'email':'user@example.com'}); - * }] - * //... - * }, function(err, results) { - * console.log('err = ', err); - * console.log('email_link = ', results.email_link); - * }); - */ -function autoInject(tasks, callback) { - var newTasks = {}; - - (0, _baseForOwn2.default)(tasks, function (taskFn, key) { - var params; - - if ((0, _isArray2.default)(taskFn)) { - params = (0, _copyArray2.default)(taskFn); - taskFn = params.pop(); - - newTasks[key] = params.concat(params.length > 0 ? newTask : taskFn); - } else if (taskFn.length === 1) { - // no dependencies, use the function as-is - newTasks[key] = taskFn; - } else { - params = parseParams(taskFn); - if (taskFn.length === 0 && params.length === 0) { - throw new Error("autoInject task functions require explicit parameters."); - } - - params.pop(); - - newTasks[key] = params.concat(newTask); - } - - function newTask(results, taskCb) { - var newArgs = (0, _arrayMap2.default)(params, function (name) { - return results[name]; - }); - newArgs.push(taskCb); - taskFn.apply(null, newArgs); - } - }); - - (0, _auto2.default)(newTasks, callback); -} -module.exports = exports['default'];
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