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href=\"https://npmjs.org/package/extract-opts\" title=\"View this project on NPM\"><img src=\"https://img.shields.io/npm/v/extract-opts.svg\" alt=\"NPM version\" /></a></span>\n<span class=\"badge-npmdownloads\"><a href=\"https://npmjs.org/package/extract-opts\" title=\"View this project on NPM\"><img src=\"https://img.shields.io/npm/dm/extract-opts.svg\" alt=\"NPM downloads\" /></a></span>\n<span class=\"badge-daviddm\"><a href=\"https://david-dm.org/bevry/extract-opts\" title=\"View the status of this project's dependencies on DavidDM\"><img src=\"https://img.shields.io/david/bevry/extract-opts.svg\" alt=\"Dependency Status\" /></a></span>\n<span class=\"badge-daviddmdev\"><a href=\"https://david-dm.org/bevry/extract-opts#info=devDependencies\" title=\"View the status of this project's development dependencies on DavidDM\"><img src=\"https://img.shields.io/david/dev/bevry/extract-opts.svg\" alt=\"Dev Dependency Status\" /></a></span>\n<br class=\"badge-separator\" />\n<span class=\"badge-slackin\"><a href=\"https://slack.bevry.me\" title=\"Join this project's slack community\"><img src=\"https://slack.bevry.me/badge.svg\" alt=\"Slack community badge\" /></a></span>\n<span class=\"badge-patreon\"><a href=\"http://patreon.com/bevry\" title=\"Donate to this project using Patreon\"><img src=\"https://img.shields.io/badge/patreon-donate-yellow.svg\" alt=\"Patreon donate button\" /></a></span>\n<span class=\"badge-gratipay\"><a href=\"https://www.gratipay.com/bevry\" title=\"Donate weekly to this project using Gratipay\"><img src=\"https://img.shields.io/badge/gratipay-donate-yellow.svg\" alt=\"Gratipay donate button\" /></a></span>\n<span class=\"badge-flattr\"><a href=\"https://flattr.com/profile/balupton\" title=\"Donate to this project using Flattr\"><img src=\"https://img.shields.io/badge/flattr-donate-yellow.svg\" alt=\"Flattr donate button\" /></a></span>\n<span class=\"badge-paypal\"><a href=\"https://bevry.me/paypal\" title=\"Donate to this project using Paypal\"><img src=\"https://img.shields.io/badge/paypal-donate-yellow.svg\" alt=\"PayPal donate button\" /></a></span>\n<span class=\"badge-bitcoin\"><a href=\"https://bevry.me/bitcoin\" title=\"Donate once-off to this project using Bitcoin\"><img src=\"https://img.shields.io/badge/bitcoin-donate-yellow.svg\" alt=\"Bitcoin donate button\" /></a></span>\n<span class=\"badge-wishlist\"><a href=\"https://bevry.me/wishlist\" title=\"Buy an item on our wishlist for us\"><img src=\"https://img.shields.io/badge/wishlist-donate-yellow.svg\" alt=\"Wishlist browse button\" /></a></span>\n\n<!-- /BADGES -->\n\n\n<!-- DESCRIPTION/ -->\n\nExtract the options and callback from a function's arguments easily\n\n<!-- /DESCRIPTION -->\n\n\n<!-- INSTALL/ -->\n\n<h2>Install</h2>\n\n<a href=\"https://npmjs.com\" title=\"npm is a package manager for javascript\"><h3>NPM</h3></a><ul>\n<li>Install: <code>npm install --save extract-opts</code></li>\n<li>Module: <code>require('extract-opts')</code></li></ul>\n\n<a href=\"http://browserify.org\" title=\"Browserify lets you require('modules') in the browser by bundling up all of your dependencies\"><h3>Browserify</h3></a><ul>\n<li>Install: <code>npm install --save extract-opts</code></li>\n<li>Module: <code>require('extract-opts')</code></li>\n<li>CDN URL: <code>//wzrd.in/bundle/[email protected]</code></li></ul>\n\n<a href=\"http://enderjs.com\" title=\"Ender is a full featured package manager for your browser\"><h3>Ender</h3></a><ul>\n<li>Install: <code>ender add extract-opts</code></li>\n<li>Module: <code>require('extract-opts')</code></li></ul>\n\n<h3><a href=\"https://github.com/bevry/editions\" title=\"Editions are the best way to produce and consume packages you care about.\">Editions</a></h3>\n\n<p>This package is published with the following editions:</p>\n\n<ul><li><code>extract-opts</code> aliases <code>extract-opts/index.js</code> which uses <a href=\"https://github.com/bevry/editions\" title=\"Editions are the best way to produce and consume packages you care about.\">Editions</a> to automatically select the correct edition for the consumers environment</li>\n<li><code>extract-opts/source/index.js</code> is Source + <a href=\"https://babeljs.io/docs/learn-es2015/\" title=\"ECMAScript Next\">ESNext</a> + <a href=\"https://nodejs.org/dist/latest-v5.x/docs/api/modules.html\" title=\"Node/CJS Modules\">Require</a></li>\n<li><code>extract-opts/es2015/index.js</code> is <a href=\"https://babeljs.io\" title=\"The compiler for writing next generation JavaScript\">Babel</a> Compiled + <a href=\"http://babeljs.io/docs/plugins/preset-es2015/\" title=\"ECMAScript 2015\">ES2015</a> + <a href=\"https://nodejs.org/dist/latest-v5.x/docs/api/modules.html\" title=\"Node/CJS Modules\">Require</a></li></ul>\n\n<p>Older environments may need <a href=\"https://babeljs.io/docs/usage/polyfill/\" title=\"A polyfill that emulates missing ECMAScript environment features\">Babel's Polyfill</a> or something similar.</p>\n\n<!-- /INSTALL -->\n\n\n## Usage\n\n``` javascript\nvar log = console.log.bind(console)\nvar extractOptsAndCallback = require('extract-opts')\n\n// fs.readFile(filename, [options], callback)\nfunction readFile (filename, opts, next) {\n\t// Extract options and callback\n\tvar args = extractOptsAndCallback(opts, next)\n\topts = args[0]\n\tnext = args[1]\n\n\t// Forward for simplicities sake\n\trequire('fs').readFile(filename, opts, next)\n}\n\n// Test it\nreadFile('package.json', log)          // works with no options\nreadFile('package.json', null, log)    // works with null options\nreadFile('package.json', {next: log})   // works with just options\n```\n\n### Customisation\n\nExtract Options and Callback also supports a third argument.\nYou can use this third argument to customize the `completionCallbackNames` property that defaults to `['next']`.\nThis is useful if your completion callback has other names besides `next`.\nAllowing you to do the following:\n\n``` javascript\nvar log = console.log.bind(console)\nfunction extractOptsAndCallback (opts, next, config) {\n\tif ( config == null )  config = {}\n\tif ( config.completionCallbackNames == null )  config.completionCallbackNames = ['next', 'complete', 'done']\n\treturn require('extract-opts')(opts, next, config)\n}\n\n# The readFile method as before\n\n# Test it\nreadFile('package.json', {next: log})        # works the standard completion callback name\nreadFile('package.json', {complete: log})    # works with our custom completion callback name\nreadFile('package.json', {done: log})        # works with our custom completion callback name\n```\n\n\n<!-- HISTORY/ -->\n\n<h2>History</h2>\n\n<a href=\"https://github.com/bevry/extract-opts/blob/master/HISTORY.md#files\">Discover the release history by heading on over to the <code>HISTORY.md</code> file.</a>\n\n<!-- /HISTORY -->\n\n\n<!-- CONTRIBUTE/ -->\n\n<h2>Contribute</h2>\n\n<a href=\"https://github.com/bevry/extract-opts/blob/master/CONTRIBUTING.md#files\">Discover how you can contribute by heading on over to the <code>CONTRIBUTING.md</code> file.</a>\n\n<!-- /CONTRIBUTE -->\n\n\n<!-- BACKERS/ -->\n\n<h2>Backers</h2>\n\n<h3>Maintainers</h3>\n\nThese amazing people are maintaining this project:\n\n<ul><li><a href=\"https://balupton.com\">Benjamin Lupton</a> — <a href=\"https://github.com/bevry/extract-opts/commits?author=balupton\" title=\"View the GitHub contributions of Benjamin Lupton on repository bevry/extract-opts\">view contributions</a></li></ul>\n\n<h3>Sponsors</h3>\n\nNo sponsors yet! Will you be the first?\n\n<span class=\"badge-patreon\"><a href=\"http://patreon.com/bevry\" title=\"Donate to this project using Patreon\"><img src=\"https://img.shields.io/badge/patreon-donate-yellow.svg\" alt=\"Patreon donate button\" /></a></span>\n<span class=\"badge-gratipay\"><a href=\"https://www.gratipay.com/bevry\" title=\"Donate weekly to this project using Gratipay\"><img src=\"https://img.shields.io/badge/gratipay-donate-yellow.svg\" alt=\"Gratipay donate button\" /></a></span>\n<span class=\"badge-flattr\"><a href=\"https://flattr.com/profile/balupton\" title=\"Donate to this project using Flattr\"><img src=\"https://img.shields.io/badge/flattr-donate-yellow.svg\" alt=\"Flattr donate button\" /></a></span>\n<span class=\"badge-paypal\"><a href=\"https://bevry.me/paypal\" title=\"Donate to this project using Paypal\"><img src=\"https://img.shields.io/badge/paypal-donate-yellow.svg\" alt=\"PayPal donate button\" /></a></span>\n<span class=\"badge-bitcoin\"><a href=\"https://bevry.me/bitcoin\" title=\"Donate once-off to this project using Bitcoin\"><img src=\"https://img.shields.io/badge/bitcoin-donate-yellow.svg\" alt=\"Bitcoin donate button\" /></a></span>\n<span class=\"badge-wishlist\"><a href=\"https://bevry.me/wishlist\" title=\"Buy an item on our wishlist for us\"><img src=\"https://img.shields.io/badge/wishlist-donate-yellow.svg\" alt=\"Wishlist browse button\" /></a></span>\n\n<h3>Contributors</h3>\n\nThese amazing people have contributed code to this project:\n\n<ul><li><a href=\"https://balupton.com\">Benjamin Lupton</a> — <a href=\"https://github.com/bevry/extract-opts/commits?author=balupton\" title=\"View the GitHub contributions of Benjamin Lupton on repository bevry/extract-opts\">view contributions</a></li>\n<li><a href=\"http://seanfridman.com\">Sean Fridman</a> — <a href=\"https://github.com/bevry/extract-opts/commits?author=sfrdmn\" title=\"View the GitHub contributions of Sean Fridman on repository bevry/extract-opts\">view contributions</a></li></ul>\n\n<a href=\"https://github.com/bevry/extract-opts/blob/master/CONTRIBUTING.md#files\">Discover how you can contribute by heading on over to the <code>CONTRIBUTING.md</code> file.</a>\n\n<!-- /BACKERS -->\n\n\n<!-- LICENSE/ -->\n\n<h2>License</h2>\n\nUnless stated otherwise all works are:\n\n<ul><li>Copyright &copy; 2013+ <a href=\"http://bevry.me\">Bevry Pty Ltd</a></li>\n<li>Copyright &copy; 2011+ <a href=\"https://balupton.com\">Benjamin Lupton</a></li></ul>\n\nand licensed under:\n\n<ul><li><a href=\"http://spdx.org/licenses/MIT.html\">MIT License</a></li></ul>\n\n<!-- /LICENSE -->\n","maintainers":[{"email":"[email protected]","name":"balupton"},{"email":"[email protected]","name":"bevryme"}],"time":{"modified":"2019-01-03T20:47:50.487Z","created":"2013-06-23T06:57:31.630Z","2.0.0":"2013-06-23T06:57:36.831Z","2.2.0":"2013-06-24T03:16:37.343Z","3.0.0":"2015-03-13T10:07:31.301Z","3.0.1":"2015-03-13T10:11:29.715Z","3.1.0":"2016-01-14T10:34:10.591Z","3.2.0":"2016-01-15T03:29:17.451Z","3.3.0":"2016-05-27T10:24:39.329Z","3.3.1":"2016-05-27T10:27:38.621Z"},"author":{"name":"2013+ Bevry Pty Ltd","email":"[email protected]","url":"http://bevry.me"},"repository":{"type":"git","url":"git+ssh://[email protected]/bevry/extract-opts.git"},"users":{"markstos":true},"homepage":"https://github.com/bevry/extract-opts","keywords":["opts","options","cb","callback","next","flow","args","optional","arguments","extract"],"contributors":[{"name":"Benjamin Lupton","email":"[email protected]","url":"https://balupton.com"},{"name":"Sean Fridman","email":"[email protected]","url":"http://seanfridman.com"}],"bugs":{"url":"https://github.com/bevry/extract-opts/issues"},"readmeFilename":"README.md","license":"MIT","_etag":"W/\"feed5863681cf063a1952602d2f4937a\"","_lastModified":"Thu, 03 Jan 2019 20:47:51 GMT"}