-
Notifications
You must be signed in to change notification settings - Fork 4
/
index.js
56 lines (50 loc) · 1.04 KB
/
index.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
'use strict';
const chromeRenderMiddleware = require('koa-chrome-render');
const CrawlerUserAgents = [
'googlebot',
'yahoo',
'bingbot',
'Baiduspider',// http://baidu.com/search/spider.htm
'facebookexternalhit',
'twitterbot',
'rogerbot',
'linkedinbot',
'embedly',
'quora link preview',
'showyoubot',
'outbrain',
'pinterest/0.',
'developers.google.com/+/web/snippet',
'slackbot',
'vkShare',
'W3C_Validator',
'redditbot',
'Applebot',
'WhatsApp',
'flipboard',
'tumblr',
'bitlybot',
'SkypeUriPreview',
'nuzzel',
'Discordbot',
'Google Page Speed',
'Qwantify'
]
function isCrawler(request) {
const userAgent = request.headers['user-agent'];
for (let i = 0; i < CrawlerUserAgents.length; i++) {
const keyword = CrawlerUserAgents[i];
if (userAgent.indexOf(keyword) >= 0) {
return true;
}
}
return false;
}
function seoMiddleware(options = {}) {
const { render } = options;
return chromeRenderMiddleware({
render,
enable: isCrawler
})
}
module.exports = seoMiddleware;