Properly export plugin function

Ref. postcss/postcss#1441
niksy · Oct 20, 2020 · a179ebc · a179ebc
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commit a179ebc
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 ## [Unreleased][]
 
+### Changed
+
+-   Properly export plugin function
+    ([reference](https://github.com/postcss/postcss/issues/1441))
+
 ## [3.0.0][] - 2020-10-07
 
 ### Added

diff --git a/index.js b/index.js
@@ -1,6 +1,6 @@
 import emMediaQuery from 'em-media-query';
 
-export default (options) => {
+const plugin = (options) => {
 	return {
 		postcssPlugin: 'postcss-em-media-query',
 		AtRule: {
@@ -10,5 +10,6 @@ export default (options) => {
 		}
 	};
 };
+plugin.postcss = true;
 
-export const postcss = true;
+export default plugin;
diff --git a/test/index.js b/test/index.js
@@ -5,7 +5,8 @@ import fn from '../index';
 
 async function runPostcss(file, options) {
 	const css = await fs.readFile(file, 'utf8');
-	return postcss([fn(options)]).process(css);
+	/* eslint-disable no-undefined */
+	return postcss([fn(options)]).process(css, { from: undefined });
 }
 
 async function runTest(testCase, options) {