added unit testing, and started implementing unit tests...phew

node_modules/source-map-url/source-map-url.js

@@ -0,0 +1,57 @@
+// Copyright 2014 Simon Lydell
+// X11 (“MIT”) Licensed. (See LICENSE.)
+
+void (function(root, factory) {
+  if (typeof define === "function" && define.amd) {
+    define(factory)
+  } else if (typeof exports === "object") {
+    module.exports = factory()
+  } else {
+    root.sourceMappingURL = factory()
+  }
+}(this, function() {
+
+  var innerRegex = /[#@] sourceMappingURL=([^\s'"]*)/
+
+  var regex = RegExp(
+    "(?:" +
+      "/\\*" +
+      "(?:\\s*\r?\n(?://)?)?" +
+      "(?:" + innerRegex.source + ")" +
+      "\\s*" +
+      "\\*/" +
+      "|" +
+      "//(?:" + innerRegex.source + ")" +
+    ")" +
+    "\\s*"
+  )
+
+  return {
+
+    regex: regex,
+    _innerRegex: innerRegex,
+
+    getFrom: function(code) {
+      var match = code.match(regex)
+      return (match ? match[1] || match[2] || "" : null)
+    },
+
+    existsIn: function(code) {
+      return regex.test(code)
+    },
+
+    removeFrom: function(code) {
+      return code.replace(regex, "")
+    },
+
+    insertBefore: function(code, string) {
+      var match = code.match(regex)
+      if (match) {
+        return code.slice(0, match.index) + string + code.slice(match.index)
+      } else {
+        return code + string
+      }
+    }
+  }
+
+}));