56 lines
1.9 KiB
Markdown
56 lines
1.9 KiB
Markdown
---
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id: 587d7fb4367417b2b2512c00
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title: Expand Your Project with External Packages from npm
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challengeType: 2
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forumTopicId: 301527
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---
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## Description
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<section id='description'>
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One of the biggest reasons to use a package manager, is their powerful dependency management. Instead of manually having to make sure that you get all dependencies whenever you set up a project on a new computer, npm automatically installs everything for you. But how can npm know exactly what your project needs? Meet the <code>dependencies</code> section of your package.json file.
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In this section, packages your project requires are stored using the following format:
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```json
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"dependencies": {
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"package-name": "version",
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"express": "4.14.0"
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}
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```
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</section>
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## Instructions
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<section id='instructions'>
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Add version "2.14.0" of the "moment" package to the <code>dependencies</code> field of your package.json file.
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<strong>Note:</strong> Moment is a handy library for working with time and dates.
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: '"dependencies" should include "moment"'
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testString: 'getUserInput => $.get(getUserInput(''url'') + ''/_api/package.json'').then(data => { var packJson = JSON.parse(data); assert.property(packJson.dependencies, ''moment'', ''"dependencies" does not include "moment"''); }, xhr => { throw new Error(xhr.responseText); })'
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- text: '"moment" version should be "2.14.0"'
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testString: 'getUserInput => $.get(getUserInput(''url'') + ''/_api/package.json'').then(data => { var packJson = JSON.parse(data); assert.match(packJson.dependencies.moment, /^[\^\~]?2\.14\.0/, ''Wrong version of "moment" installed. It should be 2.14.0''); }, xhr => { throw new Error(xhr.responseText); })'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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