express-robots

Express middleware for generating your robots.txt

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express-robots
Express middleware for generating a robots.txt or responding with an existing file.

Using a file

app.use(robots(__dirname + '/robots.txt'));

Using an object

Basic object

app.use(robots({UserAgent: '*', Disallow: '/'}))

Will produce:

UserAgent: *
Disallow: /

Crawl Delay

You can optionally pass a CrawlDelay in just like passing in Disallow
app.use(robots({UserAgent: '*', Disallow: '/', CrawlDelay: '5'}))

Will produce:

UserAgent: *
Disallow: /
Crawl-delay: 5

Or an array of objects

app.use(robots([
  {
    UserAgent: 'Googlebot',
    Disallow: '/no-google'
  },
  {
    UserAgent: 'Bingbot',
    Disallow: '/no-bing'
  }
]));

Will produce:

UserAgent: Googlebot
Disallow: /no-google
UserAgent: Bingbot
Disallow: /no-bing

Or either property (UserAgent | Disallow) as an array

app.use(robots([
  {
    UserAgent: [ 'Googlebot', 'Slurp' ],
    Disallow: [ '/no-google', '/no-yahoo' ]
  },
  {
    UserAgent: '*',
    Disallow: [ '/no-bots', '/still-no-bots' ]
  }
]));

Will produce:

UserAgent: Googlebot
UserAgent: Slurp
Disallow: /no-google
Disallow: /no-yahoo
UserAgent: *
Disallow: /no-bots
Disallow: /still-no-bots