| 1 | # karma-source-map-support
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| 2 |
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| 3 | [](https://greenkeeper.io/)
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| 4 |
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| 5 | Karma plugin for inline sourcemap support.
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| 6 |
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| 7 | ## Motivation
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| 8 |
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| 9 | When loading Browserify bundles with inline source maps (via [`karma-browserify`](https://www.npmjs.com/package/karma-browserify)), the stack traces in Chrome don't mention the original modules. This plugin uses [`source-map-support`](https://www.npmjs.com/package/source-map-support) to improve the situation.
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| 10 |
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| 11 | ## Use
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| 12 |
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| 13 | Install the plugin with `npm`:
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| 14 |
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| 15 | npm install karma-source-map-support
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| 16 |
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| 17 | Configure Karma to load the plugin as a framework:
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| 18 |
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| 19 | ```js
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| 20 | module.exports = function(config) {
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| 21 | config.set({
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| 22 | frameworks: ['source-map-support']
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| 23 | // additional settings here ...
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| 24 | });
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| 25 | };
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| 26 | ```
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| 27 |
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| 28 | ## Example
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| 29 |
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| 30 | The config settings below are a complete example using Mocha and Browserify with source map support:
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| 31 |
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| 32 | ```js
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| 33 | module.exports = function(config) {
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| 34 | config.set({
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| 35 | frameworks: ['browserify', 'source-map-support', 'mocha'],
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| 36 | files: [
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| 37 | 'src/**/*.test.js'
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| 38 | ],
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| 39 | preprocessors: {
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| 40 | 'src/**/*.test.js': ['browserify']
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| 41 | },
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| 42 | browsers: ['PhantomJS'],
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| 43 | singleRun: false,
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| 44 | browserify: {
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| 45 | debug: true // include inline source maps
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| 46 | }
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| 47 | });
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| 48 | };
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| 49 | ```
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| 50 |
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| 51 | Sample stack trace without this plugin:
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| 52 | ```
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| 53 | AssertionError: case 2: expected [ 0, 0.6666666666666666 ] to deeply equal [ 0, 0.5 ]
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| 54 | at Function.assert.deepEqual (http://localhost:9876/absolute/var/folders/6m/3grlt52x7w3047wy0n6j7dr00000gn/T/2d4c510ad9122153a42db199d1cc8e9553208184.browserify:1848:32)
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| 55 | at Context.<anonymous> (http://localhost:9876/absolute/var/folders/6m/3grlt52x7w3047wy0n6j7dr00000gn/T/2d4c510ad9122153a42db199d1cc8e9553208184.browserify:6061:14)
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| 56 | at callFn (http://localhost:9876/base/node_modules/mocha/mocha.js:4496:21)
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| 57 | at Test.Runnable.run (http://localhost:9876/base/node_modules/mocha/mocha.js:4489:7)
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| 58 | at Runner.runTest (http://localhost:9876/base/node_modules/mocha/mocha.js:4892:10)
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| 59 | at http://localhost:9876/base/node_modules/mocha/mocha.js:4970:12
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| 60 | at next (http://localhost:9876/base/node_modules/mocha/mocha.js:4817:14)
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| 61 | at http://localhost:9876/base/node_modules/mocha/mocha.js:4827:7
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| 62 | at next (http://localhost:9876/base/node_modules/mocha/mocha.js:4766:23)
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| 63 | at http://localhost:9876/base/node_modules/mocha/mocha.js:4794:5
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| 64 | ```
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| 65 |
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| 66 |
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| 67 | Sample stack trace with this plugin:
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| 68 | ```
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| 69 | AssertionError: case 2: expected [ 0, 0.6666666666666666 ] to deeply equal [ 0, 0.5 ]
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| 70 | at Function.assert.deepEqual (node_modules/chai/lib/chai/interface/assert.js:205:1)
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| 71 | at Context.<anonymous> (src/scenes/util/geom.test.js:27:1)
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| 72 | at callFn (http://localhost:9876/base/node_modules/mocha/mocha.js:4496:21)
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| 73 | at Test.Runnable.run (http://localhost:9876/base/node_modules/mocha/mocha.js:4489:7)
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| 74 | at Runner.runTest (http://localhost:9876/base/node_modules/mocha/mocha.js:4892:10)
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| 75 | at http://localhost:9876/base/node_modules/mocha/mocha.js:4970:12
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| 76 | at next (http://localhost:9876/base/node_modules/mocha/mocha.js:4817:14)
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| 77 | at http://localhost:9876/base/node_modules/mocha/mocha.js:4827:7
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| 78 | at next (http://localhost:9876/base/node_modules/mocha/mocha.js:4766:23)
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| 79 | at http://localhost:9876/base/node_modules/mocha/mocha.js:4794:5
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| 80 | ```
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