1Overview [![Build Status](https://travis-ci.org/lydell/source-map-url.png?branch=master)](https://travis-ci.org/lydell/source-map-url) 2======== 3 4[![browser support](https://ci.testling.com/lydell/source-map-url.png)](https://ci.testling.com/lydell/source-map-url) 5 6Tools for working with sourceMappingURL comments. 7 8```js 9var sourceMappingURL = require("source-map-url") 10 11var code = [ 12 "!function(){...}();", 13 "/*# sourceMappingURL=foo.js.map */" 14].join("\n") 15 16sourceMappingURL.existsIn(code) 17// true 18 19sourceMappingURL.getFrom(code) 20// foo.js.map 21 22code = sourceMappingURL.insertBefore(code, "// License: MIT\n") 23// !function(){...}(); 24// // License: MIT 25// /*# sourceMappingURL=foo.js.map */ 26 27code = sourceMappingURL.removeFrom(code) 28// !function(){...}(); 29// // License: MIT 30 31sourceMappingURL.existsIn(code) 32// false 33 34sourceMappingURL.getFrom(code) 35// null 36 37code += "//# sourceMappingURL=/other/file.js.map" 38// !function(){...}(); 39// // License: MIT 40// //# sourceMappingURL=/other/file.js.map 41``` 42 43 44Installation 45============ 46 47- `npm install source-map-url` 48- `bower install source-map-url` 49- `component install lydell/source-map-url` 50 51Works with CommonJS, AMD and browser globals, through UMD. 52 53 54Usage 55===== 56 57### `sourceMappingURL.getFrom(code)` ### 58 59Returns the url of the sourceMappingURL comment in `code`. Returns `null` if 60there is no such comment. 61 62### `sourceMappingURL.existsIn(code)` ### 63 64Returns `true` if there is a sourceMappingURL comment in `code`, or `false` 65otherwise. 66 67### `sourceMappingURL.removeFrom(code)` ### 68 69Removes the sourceMappingURL comment in `code`. Does nothing if there is no 70such comment. Returns the updated `code`. 71 72### `sourceMappingURL.insertBefore(code, string)` ### 73 74Inserts `string` before the sourceMappingURL comment in `code`. Appends 75`string` to `code` if there is no such comment. 76 77Lets you append something to a file without worrying about burying the 78sourceMappingURL comment (by keeping it at the end of the file). 79 80### `sourceMappingURL.regex` ### 81 82The regex that is used to match sourceMappingURL comments. It matches both `//` 83and `/**/` comments, thus supporting both JavaScript and CSS. 84 85 86Tests 87===== 88 89Start by running `npm test`, which lints the code and runs the test suite in Node.js. 90 91To run the tests in a browser, run `testling` (`npm install -g testling`) or `testling -u`. 92 93 94License 95======= 96 97[The X11 (“MIT”) License](LICENSE). 98