├── .gitignore
├── package.json
├── LICENSE
└── index.js


/.gitignore:
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1 | node_modules
2 | 


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/package.json:
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1 | {
2 |   "dependencies": {
3 |     "chrome-remote-interface": "^0.12.3"
4 |   }
5 | }
6 | 


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/LICENSE:
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 1 |  Copyright 2016 Google Inc. All Rights Reserved.
 2 |  Licensed under the Apache License, Version 2.0 (the "License");
 3 |  you may not use this file except in compliance with the License.
 4 |  You may obtain a copy of the License at
 5 |      http://www.apache.org/licenses/LICENSE-2.0
 6 |  Unless required by applicable law or agreed to in writing, software
 7 |  distributed under the License is distributed on an "AS IS" BASIS,
 8 |  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 9 |  See the License for the specific language governing permissions and
10 |  limitations under the License.
11 | 


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/index.js:
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 1 | /*
 2 |  Copyright 2016 Google Inc. All Rights Reserved.
 3 |  Licensed under the Apache License, Version 2.0 (the "License");
 4 |  you may not use this file except in compliance with the License.
 5 |  You may obtain a copy of the License at
 6 |      http://www.apache.org/licenses/LICENSE-2.0
 7 |  Unless required by applicable law or agreed to in writing, software
 8 |  distributed under the License is distributed on an "AS IS" BASIS,
 9 |  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
10 |  See the License for the specific language governing permissions and
11 |  limitations under the License.
12 | */
13 | 
14 | var fs = require('fs');
15 | var Chrome = require('chrome-remote-interface');
16 | var spawn = require('child_process').spawn;
17 | 
18 | if (process.argv[2] === undefined) {
19 |   throw Error('No headless binary path provided.');
20 | }
21 | 
22 | var headless = spawn(process.argv[2], [
23 |   '--remote-debugging-port=9222']);
24 | 
25 | var screenshotUrl = process.argv[3] || 'https://paulirish.com';
26 | 
27 | // Go ahead and log out a few things
28 | headless.stdout.on('data', d => console.log(d.toString()));
29 | headless.stderr.on('data', d => console.log(d.toString()));
30 | 
31 | // Dumb timeout for now
32 | setTimeout(connect, 2000);
33 | 
34 | function getChromeInstance() {
35 |   return new Promise((res, rej) => {
36 |     Chrome(function (chromeInstance) {
37 |       res(chromeInstance);
38 |     }).on('error', rej);
39 |   });
40 | }
41 | 
42 | function takeScreenshot(instance) {
43 |   instance.Page.captureScreenshot().then((v) => {
44 |     let filename = `screenshot-${Date.now()}.png`;
45 | 
46 |     fs.writeFileSync(filename, v.data, 'base64');
47 |     console.log(`Image saved as ${filename}`);
48 | 
49 |     // Take it all down now.
50 |     headless.kill();
51 |     process.exit(0);
52 |   });
53 | }
54 | 
55 | function connect() {
56 |   getChromeInstance().then(instance => {
57 |     instance.Page.loadEventFired(takeScreenshot.bind(null, instance));
58 |     instance.Page.enable();
59 |     instance.once('ready', () => {
60 |       instance.Page.navigate({url: screenshotUrl})
61 |     });
62 |   });
63 | }
64 | 


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