Add type definitions for next/mdx

package.json

@@ -49,7 +49,7 @@
  "@babel/preset-flow": "7.14.5",
  "@babel/preset-react": "7.14.5",
  "@fullhuman/postcss-purgecss": "1.3.0",
- "@mdx-js/loader": "0.18.0",
+ "@mdx-js/loader": "2.1.1",
  "@svgr/webpack": "5.5.0",
  "@swc/cli": "0.1.55",
  "@swc/core": "1.2.148",

packages/next-mdx/index.d.ts

@@ -0,0 +1,31 @@
+import { NextConfig } from 'next'
+import { CompileOptions } from '@mdx-js/mdx'
+import { RuleSetConditionAbsolute } from 'webpack'
+
+type WithMDX = (config: NextConfig) => NextConfig
+
+interface NextMDXOptions {
+ /**
+ * A webpack rule test to match files to treat as MDX.
+ *
+ * @default /\.mdx$/
+ * @example
+ * // Support both .md and .mdx files.
+ * /\.mdx?$/
+ */
+ extension?: RuleSetConditionAbsolute
+
+ /**
+ * The options to pass to MDX.
+ *
+ * @see https://mdxjs.com/packages/mdx/#api
+ */
+ options?: CompileOptions
+}
+
+/**
+ * Use [MDX](https://github.com/mdx-js/mdx) with [Next.js](https://github.com/vercel/next.js)
+ */
+declare function nextMDX(options?: NextMDXOptions): WithMDX
+
+export = nextMDX

packages/next-mdx/package.json

@@ -7,6 +7,11 @@
  "url": "vercel/next.js",
  "directory": "packages/next-mdx"
  },
+ "dependencies": {
+ "@mdx-js/mdx": "^2.0.0",
+ "next": "12.1.7-canary.3",
+ "webpack": "^5.0.0"
+ },
  "peerDependencies": {
  "@mdx-js/loader": ">=0.15.0",
  "@mdx-js/react": "*"

packages/next-mdx/tsconfig.json

@@ -0,0 +1,9 @@
+{
+ "extends": "../../tsconfig-tsec.json",
+ "compilerOptions": {
+ "strict": true,
+ "module": "commonjs",
+ "target": "es2017",
+ "moduleResolution": "node"
+ }
+}