Add { relative: ... } support for replacements configuration option

src/aliasify.coffee

@@ -13,6 +13,8 @@ getReplacement = (file, aliases, regexps) ->
                     return false
                 else if typeof regexps[key] == "function"
                     return regexps[key](file, key, re)
+                else if regexps[key]? and regexps[key].relative?
+                    return { relative: file.replace(re, regexps[key].relative) }
                 else
                     return file.replace(re, regexps[key])
 

test/test.coffee

@@ -112,6 +112,14 @@ describe "aliasify", ->
                 _ = require("underscore");
             """)
 
+    it "should correctly transform a file-relative regexp replacement", (done) ->
+        process.chdir testWithRelativeConfigDir
+        jsFile = path.resolve __dirname, "../testFixtures/regexTestWithFileRelativeConfig/src/index.js"
+        transformTools.runTransform aliasify, jsFile, (err, result) ->
+            return done err if err
+            assert.equal result, "d3 = require('../shims/d3.js');"
+            done()
+
     it "should work if there are no regexes and no aliases", ->
         runTestWithConfig {
             aliases: null

testFixtures/regexTestWithFileRelativeConfig/config/config.js

@@ -0,0 +1,7 @@
+module.exports = {
+    replacements: {
+	"(.*)": {
+	    relative: "../shims/$1.js"
+	}
+    }
+}

testFixtures/regexTestWithFileRelativeConfig/package.json

@@ -0,0 +1,3 @@
+{
+    "aliasify": "./config/config.js"
+}

testFixtures/regexTestWithFileRelativeConfig/src/index.js

@@ -0,0 +1 @@
+d3 = require("d3");