Overview 
#
Tools for working with sourceMappingURL comments.
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.mapInstallation#
npm install source-map-urlbower install source-map-urlcomponent 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. Appendsstring 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.