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node_modules/source-map-url/readme.md 2.34 KB
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  Overview [![Build Status](https://travis-ci.org/lydell/source-map-url.png?branch=master)](https://travis-ci.org/lydell/source-map-url)
  ========
  
  [![browser support](https://ci.testling.com/lydell/source-map-url.png)](https://ci.testling.com/lydell/source-map-url)
  
  Tools for working with sourceMappingURL comments.
  
  ```js
  var sourceMappingURL = require("source-map-url")
  
  var code = [
    "!function(){...}();",
    "/*# sourceMappingURL=foo.js.map */"
  ].join("\n")
  
  sourceMappingURL.existsIn(code)
  // true
  
  sourceMappingURL.getFrom(code)
  // foo.js.map
  
  code = sourceMappingURL.insertBefore(code, "// License: MIT\n")
  // !function(){...}();
  // // License: MIT
  // /*# sourceMappingURL=foo.js.map */
  
  code = sourceMappingURL.removeFrom(code)
  // !function(){...}();
  // // License: MIT
  
  sourceMappingURL.existsIn(code)
  // false
  
  sourceMappingURL.getFrom(code)
  // null
  
  code += "//# sourceMappingURL=/other/file.js.map"
  // !function(){...}();
  // // License: MIT
  // //# sourceMappingURL=/other/file.js.map
  ```
  
  
  Installation
  ============
  
  - `npm install source-map-url`
  - `bower install source-map-url`
  - `component install lydell/source-map-url`
  
  Works with CommonJS, AMD and browser globals, through UMD.
  
  
  Usage
  =====
  
  ### `sourceMappingURL.getFrom(code)` ###
  
  Returns the url of the sourceMappingURL comment in `code`. Returns `null` if
  there is no such comment.
  
  ### `sourceMappingURL.existsIn(code)` ###
  
  Returns `true` if there is a sourceMappingURL comment in `code`, or `false`
  otherwise.
  
  ### `sourceMappingURL.removeFrom(code)` ###
  
  Removes the sourceMappingURL comment in `code`. Does nothing if there is no
  such comment. Returns the updated `code`.
  
  ### `sourceMappingURL.insertBefore(code, string)` ###
  
  Inserts `string` before the sourceMappingURL comment in `code`. Appends
  `string` to `code` if there is no such comment.
  
  Lets you append something to a file without worrying about burying the
  sourceMappingURL comment (by keeping it at the end of the file).
  
  ### `sourceMappingURL.regex` ###
  
  The regex that is used to match sourceMappingURL comments. It matches both `//`
  and `/**/` comments, thus supporting both JavaScript and CSS.
  
  
  Tests
  =====
  
  Start by running `npm test`, which lints the code and runs the test suite in Node.js.
  
  To run the tests in a browser, run `testling` (`npm install -g testling`) or `testling -u`.
  
  
  License
  =======
  
  [The X11 (“MIT”) License](LICENSE).