source-map-url v0.4.1
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.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
.