first commit

Author: jonschlinkert

.editorconfig

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+# http://editorconfig.org
+root = true
+
+[*]
+indent_style = space
+end_of_line = lf
+charset = utf-8
+indent_size = 2
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false
+insert_final_newline = false
+
+[{,test/}{actual,fixtures}/**]
+trim_trailing_whitespace = false
+insert_final_newline = false
+
+[templates/**]
+trim_trailing_whitespace = false
+insert_final_newline = false

.gitattributes

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+# Enforce Unix newlines
+* text eol=lf
+
+# binaries
+*.ai binary
+*.psd binary
+*.jpg binary
+*.gif binary
+*.png binary
+*.jpeg binary

.gitignore

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+*.DS_Store
+*.sublime-*
+_gh_pages
+bower_components
+node_modules
+npm-debug.log
+actual
+test/actual
+temp
+tmp
+TODO.md
+vendor
+.idea
+benchmark
+coverage

.jshintrc

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+{
+  "asi": false,
+  "boss": true,
+  "curly": true,
+  "eqeqeq": true,
+  "eqnull": true,
+  "esnext": true,
+  "immed": true,
+  "latedef": false,
+  "laxcomma": false,
+  "mocha": true,
+  "newcap": true,
+  "noarg": true,
+  "node": true,
+  "sub": true,
+  "undef": true,
+  "unused": true
+}

.travis.yml

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+sudo: false
+language: node_js
+node_js:
+  - "0.10"
+  - "0.12"
+  - "0.13"
+  - "iojs"
+matrix:
+  fast_finish: true
+  allow_failures:
+    - node_js: "0.13"

.verb.md

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+# {%= name %} {%= badge("fury") %}
+
+> {%= description %}
+
+If you've ever tried to create a JavaScript regular expression for validating a range of years, you'll know it's not easy. This solves that problem. 
+
+## Install
+{%= include("install-npm", {save: true}) %}
+
+## Usage
+
+```js
+var yearRange = require('{%= name %}');
+
+yearRegex(1992, 2015);
+//=> /^(199[2-9]|200[0-9]|201[0-5])$/
+
+yearRange(0, 1999)
+//=> /^([0-9]|[1-9][0-9]|[1-9][0-9]{2}|1[0-9]{3})$/
+
+yearRange(2016)
+//=> /^(2016)$/
+```
+
+## Related projects
+{%= related(verb.related.list) %}  
+
+## Running tests
+{%= include("tests") %}
+
+## Contributing
+{%= include("contributing") %}
+
+## Author
+{%= include("author") %}
+
+## License
+{%= copyright() %}
+{%= license() %}
+
+***
+
+{%= include("footer") %}

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2015, Jon Schlinkert.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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+# year-range-regex [![NPM version](https://badge.fury.io/js/year-range-regex.svg)](http://badge.fury.io/js/year-range-regex)
+
+> Generates a regular expression for validating a range of years.
+
+If you've ever tried to create a JavaScript regular expression for validating a range of years, you'll know it's not easy. This solves that problem.
+
+## Install
+
+Install with [npm](https://www.npmjs.com/)
+
+```sh
+$ npm i year-range-regex --save
+```
+
+## Usage
+
+```js
+var yearRange = require('year-range-regex');
+
+yearRegex(1992, 2015);
+//=> /^(199[2-9]|200[0-9]|201[0-5])$/
+
+yearRange(0, 1999)
+//=> /^([0-9]|[1-9][0-9]|[1-9][0-9]{2}|1[0-9]{3})$/
+
+yearRange(2016)
+//=> /^(2016)$/
+```
+
+## Related projects
+
+* [expand-range](https://github.com/jonschlinkert/expand-range): Fast, bash-like range expansion. Expand a range of numbers or letters, uppercase or lowercase. See… [more](https://github.com/jonschlinkert/expand-range)
+* [fill-range](https://github.com/jonschlinkert/fill-range): Fill in a range of numbers or letters, optionally passing an increment or multiplier to… [more](https://github.com/jonschlinkert/fill-range)
+* [repeat-element](https://github.com/jonschlinkert/repeat-element): Create an array by repeating the given value n times.
+* [repeat-string](https://github.com/jonschlinkert/repeat-string): Repeat the given string n times. Fastest implementation for repeating a string.
+* [to-regex-range](https://github.com/jonschlinkert/to-regex-range): Returns a regex-compatible range from two numbers, min and max. Useful for creating regular expressions… [more](https://github.com/jonschlinkert/to-regex-range)
+
+## Running tests
+
+Install dev dependencies:
+
+```sh
+$ npm i -d && npm test
+```
+
+## Contributing
+
+Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](https://github.com/regexps/year-range-regex/issues/new)
+
+## Author
+
+**Jon Schlinkert**
+
++ [github/jonschlinkert](https://github.com/jonschlinkert)
++ [twitter/jonschlinkert](http://twitter.com/jonschlinkert)
+
+## License
+
+Copyright © 2015 Jon Schlinkert
+Released under the MIT license.
+
+***
+
+_This file was generated by [verb-cli](https://github.com/assemble/verb-cli) on August 07, 2015._

index.js

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+/*!
+ * year-range-regex <https://github.com/regexps/year-range-regex>
+ *
+ * Copyright (c) 2015, Jon Schlinkert.
+ * Licensed under the MIT License.
+ */
+
+'use strict';
+
+var isNumber = require('is-number');
+var toRegexRange = require('to-regex-range');
+var cache = {};
+
+module.exports = function (start, end) {
+  if (!isNumber(start)) {
+    throw new RangeError('invalid year range.');
+  }
+
+  var key = start + '-' + end;
+  if (cache.hasOwnProperty(key)) {
+    return cache[key];
+  }
+
+  if (!isNumber(end)) {
+    end = start;
+  }
+
+  var re = new RegExp('^(' + toRegexRange(start, end) + ')$');
+  return cache[key] || (cache[key] = re);
+};
+

package.json

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+{
+  "name": "year-range-regex",
+  "description": "Generates a regular expression for validating a range of years.",
+  "version": "0.1.0",
+  "homepage": "https://github.com/regexps/year-range-regex",
+  "author": "Jon Schlinkert (https://github.com/jonschlinkert)",
+  "repository": "regexps/year-range-regex",
+  "bugs": {
+    "url": "https://github.com/regexps/year-range-regex/issues"
+  },
+  "license": "MIT",
+  "files": [
+    "index.js"
+  ],
+  "main": "index.js",
+  "engines": {
+    "node": ">=0.10.0"
+  },
+  "scripts": {
+    "test": "mocha"
+  },
+  "dependencies": {
+    "is-number": "^2.0.2",
+    "to-regex-range": "^0.1.1"
+  },
+  "devDependencies": {
+    "mocha": "*"
+  },
+  "keywords": [
+    "character",
+    "class",
+    "date",
+    "expand",
+    "expansion",
+    "expression",
+    "is",
+    "match",
+    "matches",
+    "matching",
+    "number",
+    "numerical",
+    "range",
+    "ranges",
+    "regex",
+    "regexp",
+    "regular",
+    "regular-expression",
+    "test",
+    "valid",
+    "validate",
+    "validating",
+    "verify",
+    "year",
+    "years"
+  ],
+  "verb": {
+    "related": {
+      "list": [
+        "to-regex-range",
+        "fill-range",
+        "expand-range",
+        "repeat-element",
+        "repeat-string"
+      ]
+    }
+  }
+}

test.js

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+'use strict';
+
+/* deps: mocha */
+var assert = require('assert');
+var yearRange = require('./');
+console.log(yearRange(1992))
+
+describe('yearRange', function () {
+  it('should create a regex for a range of same-length years:', function () {
+    assert.deepEqual(/^(199[2-9]|200[0-9]|201[0-5])$/, yearRange(1992, 2015));
+    var re = yearRange(1992, 2015);
+
+    assert.equal(re.test('1992'), true);
+    assert.equal(re.test('1993'), true);
+    assert.equal(re.test('1999'), true);
+    assert.equal(re.test('2001'), true);
+    assert.equal(re.test('2008'), true);
+    assert.equal(re.test('2011'), true);
+    assert.equal(re.test('2015'), true);
+
+    assert.equal(re.test('12015'), false);
+    assert.equal(re.test('1991'), false);
+    assert.equal(re.test('2016'), false);
+    assert.equal(re.test('2015.1'), false);
+    assert.equal(re.test('20151'), false);
+  });
+
+  it('should create a regex for a range of different-length years:', function () {
+    assert.deepEqual(/^([0-9]|[1-9][0-9]|[1-9][0-9]{2}|1[0-9]{3})$/, yearRange(0, 1999));
+    var re = yearRange(0, 1999);
+
+    assert.equal(re.test('0'), true);
+    assert.equal(re.test('1'), true);
+    assert.equal(re.test('200'), true);
+    assert.equal(re.test('201'), true);
+    assert.equal(re.test('1991'), true);
+    assert.equal(re.test('1992'), true);
+    assert.equal(re.test('1993'), true);
+    assert.equal(re.test('1999'), true);
+
+    assert.equal(re.test('2001'), false);
+    assert.equal(re.test('2008'), false);
+    assert.equal(re.test('2011'), false);
+    assert.equal(re.test('2015'), false);
+    assert.equal(re.test('12015'), false);
+    assert.equal(re.test('2016'), false);
+    assert.equal(re.test('2015.1'), false);
+    assert.equal(re.test('20151'), false);
+  });
+});