Support semicolons when exporting MDX layout

Fixes #277.

Author: silvenon

packages/mdx/mdx-hast-to-jsx.js

@@ -37,7 +37,9 @@ function toJSX(node, parentNode = {}, options = {}) {
 
       if (childNode.type === 'export') {
         if (childNode.default) {
-          layout = childNode.value.replace(/^export\s+default\s+/, '')
+          layout = childNode.value
+            .replace(/^export\s+default\s+/, '')
+            .replace(/;\s*$/, '')
           continue
         }
 

packages/mdx/test/index.test.js

@@ -157,6 +157,11 @@ it('Should support multiline default export statement', async () => {
   expect(() => parse(result)).not.toThrow()
 })
 
+it('Should support semicolons in default export statement', async () => {
+  const result = await mdx(`export default Layout;`)
+  expect(() => parse(result)).not.toThrow()
+})
+
 it('Should throw when exporting default via named export', async () => {
   await expect(mdx(`export { default } from './Layout'`)).rejects.toThrow()
   await expect(mdx(`export { Layout as default }`)).rejects.toThrow()