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      "name": "ember-cli",
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  "name": "ember-cli-version-checker",
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  "readme": "# Ember CLI Version Checker\n\n[![npm version](https://badge.fury.io/js/ember-cli-version-checker.svg)](https://badge.fury.io/js/ember-cli-version-checker)\n[![Build Status](https://travis-ci.org/ember-cli/ember-cli-version-checker.svg?branch=master)](https://travis-ci.org/ember-cli/ember-cli-version-checker)\n\nMakes it easier to determine if a compatible version of a given NPM or Bower package is present.\n\n## Usage\n\nExample:\n\nYou want to provide two different sets of templates, based on the currently running Ember version.\n\n```javascript\nlet path = require('path');\nlet VersionChecker = require('ember-cli-version-checker');\n\nmodule.exports = {\n  name: 'awesome-addon',\n  treeForAddonTemplates(tree) {\n    let checker = new VersionChecker(this);\n    let dep = checker.for('ember', 'bower');\n\n    let baseTemplatesPath = path.join(this.root, 'addon/templates');\n\n    if (dep.satisfies('>= 1.13.0') {\n      return this.treeGenerator(path.join(baseTemplatesPath, 'current'));\n    } else {\n      return this.treeGenerator(path.join(baseTemplatesPath, 'legacy'));\n    }\n  }\n};\n```\n\n## API\n\n### assertAbove\n\nThrows an error with the given message if a minimum version isn't met.\n\n```javascript\nlet VersionChecker = require('ember-cli-version-checker');\n\nmodule.exports = {\n  name: 'awesome-addon',\n  init() {\n    this._super && this._super.init.apply(this, arguments); \n\n    let checker = new VersionChecker(this);\n\n    checker.for('ember-cli').assertAbove('2.0.0');\n  }\n};\n```\n\nYou can also provide a specific message as the third argument to `assertAbove` if you'd like to customize the output.\n\n```javascript\nlet VersionChecker = require('ember-cli-version-checker');\n\nmodule.exports = {\n  name: 'awesome-addon',\n  init() {\n    let checker = new VersionChecker(this);\n\n    checker.for('ember-cli').assertAbove('2.0.0', 'To use awesome-addon you must have ember-cli 2.0.0');\n  }\n};\n```\n\n### isAbove\n\nReturns `true` if the packages version is above the specified comparison range.\n\n```javascript\nlet VersionChecker = require('ember-cli-version-checker');\n\nmodule.exports = {\n  name: 'awesome-addon',\n  init() {\n    let checker = new VersionChecker(this);\n    let dep = checker.for('ember-cli');\n\n    if (dep.isAbove('2.0.0')) {\n      /* deal with 2.0.0 stuff */\n    } else {\n      /* provide backwards compat */\n    };\n  }\n};\n```\n\n### forEmber\n\nSince ember introduced the `ember-source` from NPM, ember has two ways to be\nshipped. One from bower `ember` and other from NPM `ember-source`. The\nfunction `forEmber` will look for `ember-source` from NPM, if it doesn't\nfind it, it will look for `ember` in bower.\n\n```javascript\nlet VersionChecker = require('ember-cli-version-checker');\n\nmodule.exports = {\n  name: 'awesome-addon',\n  init() {\n    let checker = new VersionChecker(this);\n    let ember = checker.forEmber();\n\n    if (ember.isAbove('2.10.0')) {\n      /* deal with 2.10.0 stuff */\n    };\n  }\n};\n```\n\n### exists\n\nReturns `true` or `false` indicating if the dependency exists (at any version).\n\n```js\nlet VersionChecker = require('ember-cli-version-checker');\n\nmodule.exports = {\n  name: 'awesome-addon',\n  init() {\n    this._super.init.apply(this, arguments);\n\n    let checker = new VersionChecker(this);\n    let dep = checker.for('ember-cli-qunit');\n\n    if (dep.exists()) {\n      /* do things when present */\n    };\n  }\n};\n```\n\n### version\n\nA property that returns the version for the dependency, if the dependency is not found\n`undefined` will be returned.\n\n```js\nlet VersionChecker = require('ember-cli-version-checker');\n\nmodule.exports = {\n  name: 'awesome-addon',\n  init() {\n    this._super.init.apply(this, arguments);\n\n    let checker = new VersionChecker(this);\n    let dep = checker.for('ember-cli-qunit');\n\n    // do something with dep.version\n  }\n};\n```\n",
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