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  "author": {
    "name": "Douglas Christopher Wilson",
    "email": "doug@somethingdoug.com"
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  "bugs": {
    "url": "https://github.com/jshttp/vary/issues"
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  "dependencies": {},
  "description": "Manipulate the HTTP Vary header",
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    "benchmark": "2.1.4",
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  "homepage": "https://github.com/jshttp/vary#readme",
  "keywords": [
    "http",
    "res",
    "vary"
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  "license": "MIT",
  "maintainers": [
    {
      "name": "dougwilson",
      "email": "doug@somethingdoug.com"
    }
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  "name": "vary",
  "optionalDependencies": {},
  "readme": "# vary\n\n[![NPM Version][npm-image]][npm-url]\n[![NPM Downloads][downloads-image]][downloads-url]\n[![Node.js Version][node-version-image]][node-version-url]\n[![Build Status][travis-image]][travis-url]\n[![Test Coverage][coveralls-image]][coveralls-url]\n\nManipulate the HTTP Vary header\n\n## Installation\n\nThis is a [Node.js](https://nodejs.org/en/) module available through the\n[npm registry](https://www.npmjs.com/). Installation is done using the\n[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally): \n\n```sh\n$ npm install vary\n```\n\n## API\n\n<!-- eslint-disable no-unused-vars -->\n\n```js\nvar vary = require('vary')\n```\n\n### vary(res, field)\n\nAdds the given header `field` to the `Vary` response header of `res`.\nThis can be a string of a single field, a string of a valid `Vary`\nheader, or an array of multiple fields.\n\nThis will append the header if not already listed, otherwise leaves\nit listed in the current location.\n\n<!-- eslint-disable no-undef -->\n\n```js\n// Append \"Origin\" to the Vary header of the response\nvary(res, 'Origin')\n```\n\n### vary.append(header, field)\n\nAdds the given header `field` to the `Vary` response header string `header`.\nThis can be a string of a single field, a string of a valid `Vary` header,\nor an array of multiple fields.\n\nThis will append the header if not already listed, otherwise leaves\nit listed in the current location. The new header string is returned.\n\n<!-- eslint-disable no-undef -->\n\n```js\n// Get header string appending \"Origin\" to \"Accept, User-Agent\"\nvary.append('Accept, User-Agent', 'Origin')\n```\n\n## Examples\n\n### Updating the Vary header when content is based on it\n\n```js\nvar http = require('http')\nvar vary = require('vary')\n\nhttp.createServer(function onRequest (req, res) {\n  // about to user-agent sniff\n  vary(res, 'User-Agent')\n\n  var ua = req.headers['user-agent'] || ''\n  var isMobile = /mobi|android|touch|mini/i.test(ua)\n\n  // serve site, depending on isMobile\n  res.setHeader('Content-Type', 'text/html')\n  res.end('You are (probably) ' + (isMobile ? '' : 'not ') + 'a mobile user')\n})\n```\n\n## Testing\n\n```sh\n$ npm test\n```\n\n## License\n\n[MIT](LICENSE)\n\n[npm-image]: https://img.shields.io/npm/v/vary.svg\n[npm-url]: https://npmjs.org/package/vary\n[node-version-image]: https://img.shields.io/node/v/vary.svg\n[node-version-url]: https://nodejs.org/en/download\n[travis-image]: https://img.shields.io/travis/jshttp/vary/master.svg\n[travis-url]: https://travis-ci.org/jshttp/vary\n[coveralls-image]: https://img.shields.io/coveralls/jshttp/vary/master.svg\n[coveralls-url]: https://coveralls.io/r/jshttp/vary\n[downloads-image]: https://img.shields.io/npm/dm/vary.svg\n[downloads-url]: https://npmjs.org/package/vary\n",
  "readmeFilename": "README.md",
  "repository": {
    "type": "git",
    "url": "git+https://github.com/jshttp/vary.git"
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  "scripts": {
    "bench": "node benchmark/index.js",
    "lint": "eslint --plugin markdown --ext js,md .",
    "test": "mocha --reporter spec --bail --check-leaks test/",
    "test-cov": "istanbul cover node_modules/mocha/bin/_mocha -- --reporter dot --check-leaks test/",
    "test-travis": "istanbul cover node_modules/mocha/bin/_mocha --report lcovonly -- --reporter spec --check-leaks test/"
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  "version": "1.1.2"
}