Add document.lang (#20)

index.js

@@ -1,5 +1,5 @@
 "use strict";
 const extract = require("./extract");
-const syntax = require("postcss-syntax/syntax")(extract);
+const syntax = require("postcss-syntax/syntax")(extract, "jsx");
 
 module.exports = syntax;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "postcss-jsx",
-  "version": "0.28.0",
+  "version": "0.30.0",
   "description": "PostCSS syntax for parsing CSS in JS literals",
   "repository": {
     "type": "git",
@@ -45,14 +45,14 @@
     "@babel/parser": "^7.0.0-beta.49",
     "@babel/traverse": "^7.0.0-beta.49",
     "@babel/types": "^7.0.0-beta.49",
-    "postcss-styled": ">=0.28.0"
+    "postcss-styled": ">=0.30.0"
   },
   "peerDependencies": {
     "postcss": ">=5.0.0",
-    "postcss-syntax": ">=0.28.0"
+    "postcss-syntax": ">=0.30.0"
   },
   "devDependencies": {
-    "autoprefixer": "^8.6.2",
+    "autoprefixer": "^8.6.3",
     "chai": "^4.1.2",
     "codecov": "^3.0.2",
     "json5": "^1.0.1",
@@ -61,6 +61,6 @@
     "postcss": "^6.0.22",
     "postcss-parser-tests": "^6.2.1",
     "postcss-safe-parser": "^3.0.1",
-    "postcss-syntax": ">=0.28.0"
+    "postcss-syntax": ">=0.30.0"
   }
 }

test/non-style.js

@@ -12,6 +12,7 @@ describe("non-style js files", () => {
 			const document = syntax.parse(code, {
 				from: file,
 			});
+			expect(document.source).to.haveOwnProperty("lang", "jsx");
 			expect(document.toString(), code.toString());
 		});
 	});