Respect includePaths when resolving json imports

Fixes #2

index.js

@@ -37,13 +37,31 @@ module.exports = function(url, prev, done) {
   const parts = url.split('/');
   const name = path.basename(parts.pop(), '.json');
   const cwd = process.cwd();
-  const resolved = path.join(cwd, url);
+
+
+  const includePaths = this.options.includePaths.split(':')
+    .map(p => path.resolve(cwd, p));
 
   try {
-    var json = require(resolved);
+    let resolved = path.join(cwd, url);
+    if (exists(resolved)) {
+      var json = require(resolved);
+    } else {
+      for (let i = 0; i < includePaths.length; i++ ) {
+        resolved = path.join(includePaths[i], url);
+
+        if (exists(resolved)) {
+          var json = require(resolved);
+        }
+      }
+    }
   } catch(err) {
     return done(err);
   }
 
-  return done({ contents: `$${name}: (${buildSassMap(json)});` });
+  if (json) {
+    return done({ contents: `$${name}: (${buildSassMap(json)});` });
+  }
+
+  return done(null);
 };

tests/__snapshots__/index.test.js.snap

@@ -12,6 +12,12 @@ exports[`json-importer async should resolve json array values as Sass lists 1`]
 "
 `;
 
+exports[`json-importer async should resolve json files in includePaths 1`] = `
+"output {
+  contents: (\\"color\\": \\"red\\", \\"size\\": \\"small\\"); }
+"
+`;
+
 exports[`json-importer async should resolve nested json strings as Sass map 1`] = `
 "output {
   contents: (\\"colors\\": (\\"red\\": \\"#f00\\", \\"blue\\": \\"#00f\\"), \\"sizes\\": (\\"small\\": \\"16px\\", \\"big\\": \\"30px\\")); }
@@ -30,6 +36,12 @@ exports[`json-importer sync should resolve json array values as Sass lists 1`] =
 "
 `;
 
+exports[`json-importer sync should resolve json files in includePaths 1`] = `
+"output {
+  contents: (\\"color\\": \\"red\\", \\"size\\": \\"small\\"); }
+"
+`;
+
 exports[`json-importer sync should resolve nested json strings as Sass map 1`] = `
 "output {
   contents: (\\"colors\\": (\\"red\\": \\"#f00\\", \\"blue\\": \\"#00f\\"), \\"sizes\\": (\\"small\\": \\"16px\\", \\"big\\": \\"30px\\")); }

tests/index.test.js

@@ -7,19 +7,19 @@ const generate = (file) => `
 output { contents: inspect($${path.basename(file, '.json')}) }
 `;
 
-const compile = function(data) {
+const compile = function(data, options = {}) {
   return new Promise((yeah, nah) => {
     return sass.render(
-      { data, importer },
+      Object.assign({ data, importer }, options),
       (err, results) => err ? nah(err) : yeah(results.css.toString()),
     );
   });
 }
 
-const compileSync = function(data) {
+const compileSync = function(data, options = {}) {
   return new Promise((yeah, nah) => {
     try {
-      const results = sass.renderSync({ data, importer });
+      const results = sass.renderSync(Object.assign({ data, importer }, options));
       yeah(results.css.toString());
     } catch (err) {
       nah(err);
@@ -42,6 +42,10 @@ describe('json-importer', () => {
         func(generate('tests/fixtures/list.json'))
           .then(result => expect(result).toMatchSnapshot())
       ));
+      it('should resolve json files in includePaths', () => (
+        func(generate('fixtures/flat.json'), { includePaths: ['tests']})
+          .then(result => expect(result).toMatchSnapshot())
+      ));
     });
   });
 });