├── extension
├── index.js
├── background.js
├── src
│ ├── README.md
│ └── beautify.js
├── coverage_panel.html
├── package.json
├── coverage.html
├── manifest.json
└── coverage.js
├── .gitignore
├── reporter
├── package.json
└── gen_report.js
├── README.md
└── test_data
└── ycombinator.js
/extension/index.js:
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1 |
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/extension/background.js:
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1 |
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/.gitignore:
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1 | .DS_STORE
2 | node_modules
3 | html-report
4 | test_data
5 |
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/extension/src/README.md:
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1 | `../node_modules/.bin/browserify beautify.js > ../beautify.js`
2 |
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/reporter/package.json:
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1 | {
2 | "name": "coverage-reporter",
3 | "dependencies": {
4 | "istanbul": "^0.4.5"
5 | }
6 | }
7 |
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/extension/coverage_panel.html:
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1 |
2 |
3 |
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/extension/package.json:
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1 | {
2 | "devDependencies": {
3 | "browserify": "^13.1.0",
4 | "js-beautify": "^1.6.3"
5 | }
6 | }
7 |
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/extension/src/beautify.js:
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1 | window.beautify = function(src) {
2 | var b = require('js-beautify').js_beautify;
3 |
4 | return b(src, {indent_size: 2});
5 | }
6 |
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/extension/coverage.html:
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
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/extension/manifest.json:
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1 | {
2 | "name": "coverage",
3 | "manifest_version": 2,
4 | "version": "1",
5 | "minimum_chrome_version": "10.0",
6 | "devtools_page": "coverage.html",
7 | "background" : {
8 | "scripts": ["background.js"]
9 | },
10 | "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'"
11 | }
12 |
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/reporter/gen_report.js:
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1 | var ISTANBUL_PATH = 'node_modules/istanbul';
2 |
3 | var path = require('path');
4 | var fs = require('fs');
5 |
6 | var MemoryStore = require('./' + path.join(
7 | ISTANBUL_PATH, '/lib/store/memory'));
8 |
9 | var HtmlReporter = require('./' + path.join(
10 | ISTANBUL_PATH, '/lib/report/html'));
11 |
12 | var Collector = require('./' + path.join(
13 | ISTANBUL_PATH, '/lib/collector'));
14 |
15 | var dump = JSON.parse(
16 | fs.readFileSync(
17 | path.resolve(process.cwd(), process.argv[2]), 'utf8'));
18 |
19 | var truncateFileNames = function (data) {
20 | return Object.keys(data).reduce(function (n, path) {
21 | n[path.slice(0, 200)] = data[path];
22 | n[path.slice(0, 200)].path = path.slice(0, 200)
23 |
24 | return n;
25 | }, {});
26 | }
27 |
28 | var originals = truncateFileNames(JSON.parse(dump.originals));
29 | var sourceStore = new MemoryStore();
30 | var collector = new Collector();
31 | var data = truncateFileNames(JSON.parse(dump.coverage));
32 |
33 | collector.add(data);
34 |
35 | function atob(str) {
36 | return new Buffer(str, 'base64').toString('binary');
37 | }
38 |
39 | Object.keys(originals).forEach(key => {
40 | sourceStore.set(key,
41 | decodeURIComponent(
42 | escape(atob(originals[key]))));
43 | });
44 |
45 |
46 | var reporter = new HtmlReporter({
47 | verbose: true,
48 | sourceStore,
49 | collector,
50 | });
51 |
52 | reporter.writeReport(collector, true);
53 |
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/README.md:
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1 | ## What is this?
2 |
3 | This is an extension to an old version of chrome + a custom istanbul reporter.
4 | This combo gives you the power to view what JS gets evaluated on any website.
5 |
6 | 
7 |
8 | ## Installation
9 |
10 | 1. Download an **old version of chrome** [Mac](https://commondatastorage.googleapis.com/chromium-browser-snapshots/index.html?prefix=Mac/314206/) / [Win](https://commondatastorage.googleapis.com/chromium-browser-snapshots/index.html?prefix=Win/314199/)
11 | - The reason why we have to use an old version is because we are utilizing a cool API chrome used to have to preprocess any JS file before it gets evaluated by v8. This feature was reverted [here](https://codereview.chromium.org/761143003).
12 | 2. [Download this repo](https://github.com/samccone/coverage-ext/archive/master.zip) and extract it somewhere
13 | 3. Open a prompt in the `reporter` directory
14 | 4. `npm i`
15 | 5. Run the old chrome version
16 | 6. Navigate to `chrome://extensions` and enable developer mode
17 | 7. Click "Load unpacked extension..." and select the `extension` folder from the repo
18 |
19 | ## Example Usage
20 |
21 | 1. Visit `http://news.ycombinator.com/`.
22 | 2. Open up dev tools.
23 | 3. Click on the get coveragez button.
24 | 4. The page will reload, wait for it to complete.
25 | 5. Click on the copy button.
26 | 6. Run `pbpaste > ycombinator-data`.
27 | 7. `cd reporter`.
28 | 8. `node gen_report.js ../ycombinator-data`
29 | 9. open `./reporter/html-report/index.html` to view the report
30 |
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/extension/coverage.js:
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1 | chrome.devtools.panels.create("Coverage",
2 | null,
3 | "coverage_panel.html",
4 | function(panel) {
5 | panel.onShown.addListener(function(panelWindow) {
6 | panelWindow.document.body.querySelector('#gather').addEventListener(
7 | 'click',
8 | onGatherClick);
9 |
10 | panelWindow.document.body.querySelector('#copy').addEventListener(
11 | 'click',
12 | onCopyClick);
13 | });
14 | }
15 | );
16 |
17 | function onCopyClick() {
18 | var coveragePromise = new Promise(function(res, rej) {
19 | chrome.devtools.inspectedWindow.eval('JSON.stringify(__coverage__)', function(v, err) {
20 | res(v);
21 | });
22 | });
23 |
24 | var originalSrcPromise = new Promise(function(res, rej) {
25 | chrome.devtools.inspectedWindow.eval('JSON.stringify(__originals)', function(v, err) {
26 | res(v);
27 | });
28 | });
29 |
30 | Promise.all([coveragePromise, originalSrcPromise]).then(function(vals) {
31 | chrome.devtools.inspectedWindow.eval('copy({"coverage": \''+ vals[0] +'\', "originals": \''+ vals[1] +'\'})', function(v, err) {
32 | if (err) {
33 | console.log(err);
34 | }
35 | });
36 | });
37 | }
38 |
39 | function preprocessor(src, url, fName) {
40 | function instrumentSrc(src) {
41 | // Make sure that we store the original src code in a map.
42 | var saniUrl = (url.replace(/\/|\:|\.|\?/g, '-') + '---' + (Math.random().toFixed(4)));
43 | var prefix = '(window.__originals = window.__originals || {});' +
44 | 'window.__originals["' + saniUrl + '"] = "' + btoa(unescape(encodeURIComponent(src))) + '";';
45 |
46 | return prefix + window.instrument(src, saniUrl);
47 | }
48 |
49 | if (url) {
50 | return instrumentSrc(window.beautify(src));
51 | } else {
52 | return src;
53 | }
54 | }
55 |
56 | var request = new XMLHttpRequest();
57 | request.open('GET', 'instrumenter.js', false);
58 | request.send(null);
59 | var instrumenterSrc = request.responseText
60 |
61 | request.open('GET', 'beautify.js', false);
62 | request.send(null);
63 | var beautifySrc = request.responseText
64 |
65 | function onGatherClick() {
66 | chrome.devtools.inspectedWindow.reload({
67 | preprocessingScript: instrumenterSrc + beautifySrc +
68 | '(' + preprocessor + ')',
69 | });
70 | }
71 |
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/test_data/ycombinator.js:
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1 | {
2 | "coverage": 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4 | }
--------------------------------------------------------------------------------