Export variables with onVariables callback

7ammer · Dec 22, 2015 · e60b345 · e60b345
1 parent a8628dc
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diff --git a/README.md b/README.md
@@ -109,6 +109,23 @@ postcss([
 ]
 ```
 
+### `onVariables`
+
+Callback invoked once all variables in css are known. The callback receives an
+object representing the known variables, including those explicitly-declared
+by the [`variables`](#variables) option.
+
+```js
+postcss([
+    vars({
+        onVariables: function (variables) {
+            console.log('CSS Variables');
+            console.log(JSON.stringify(variables, null, 2));
+        }
+    })
+]
+```
+
 ### `unknown`
 
 Callback on unknown variable name. It receives node instanc, variable name

diff --git a/index.js b/index.js
@@ -113,5 +113,9 @@ module.exports = postcss.plugin('postcss-simple-vars', function (opts) {
             }
 
         });
+
+        if ( opts.onVariables ) {
+            opts.onVariables(variables);
+        }
     };
 });
diff --git a/test/test.js b/test/test.js
@@ -118,6 +118,13 @@ describe('postcss-simple-vars', function () {
         expect(result).to.eql([['width', 'one']]);
     });
 
+    it('has callback for exporting variables', function (done) {
+        test('$one: 1;', '', { onVariables: function (variables) {
+            expect(variables.one).to.eql('1');
+            done();
+        } });
+    });
+
     it('overrides unknown variable', function () {
         var unknown = function () {
             return 'unknown';
-Original file line number
+Diff line change
@@ Expand Up @@
                 }
             });
+            if ( opts.onVariables ) {
+                opts.onVariables(variables);
+            }
         };
     });