diff --git a/README.md b/README.md
index f05f65d..d7a33b3 100644
--- a/README.md
+++ b/README.md
@@ -91,7 +91,9 @@ export default {
 };
 ```
 
-## Importing strings
+## Importing
+
+### Importing strings
 Since JSON doesn't map directly to SASS's data types, a common source of confusion is how to handle strings. While [SASS allows strings to be both quoted and unquoted](http://sass-lang.com/documentation/file.SASS_REFERENCE.html#sass-script-strings), strings containing spaces, commas and/or other special characters have to be wrapped in quotes. In terms of JSON, this means the string has to be double quoted:
 
 ##### Incorrect
@@ -112,6 +114,21 @@ See discussion here for more:
 
 https://github.com/Updater/node-sass-json-importer/pull/5
 
+### Importing *.js Files
+
+You can also import *.js Files. This way you can use javascript to compose and export json structure for node-sass-json-importer.
+```
+const xl = require('./variables.json')
+const md = require('./variables-md.json')
+const xs = require('./variables-xs.json')
+
+module.exports = {
+    xl,
+    md,
+    xs,
+}
+```
+
 ## Custom resolver
 
 Should you care to resolve paths, say, starting with `~/` relative to project root or some other arbitrary directory, you can do it as follows:
diff --git a/src/index.js b/src/index.js
index 83cd949..c4078d9 100644
--- a/src/index.js
+++ b/src/index.js
@@ -44,7 +44,7 @@ export default function(options = {}) {
 }
 
 export function isJSONfile(url) {
-  return /\.json5?$/.test(url);
+  return /\.js(on5?)?$/.test(url);
 }
 
 export function transformJSONtoSass(json) {
diff --git a/test/index.js b/test/index.js
index 4ec0677..73cf54f 100644
--- a/test/index.js
+++ b/test/index.js
@@ -313,6 +313,10 @@ describe('isJSONfile', function() {
     expect(isJSONfile('/test/variables.json5')).to.be.true;
   });
 
+  it('returns true if the given URL is a JS file', function() {
+    expect(isJSONfile('/test/composed-variables.js')).to.be.true;
+  });
+
   it('returns false if the given URL is not a JSON or JSON5 file', function() {
     expect(isJSONfile('/test/variables.not-json-or-json5')).to.be.false;
   });