remove old lib

lib/config.js

@@ -1,43 +0,0 @@
-/* eslint-disable no-console */
-const {NODE_ENV, NOW_URL} = process.env
-
-module.exports = (nextConfig = {}) => {
-  const {assetPrefix = NOW_URL || ''} = nextConfig
-
-  return Object.assign({}, nextConfig, {
-    assetPrefix,
-    pageExtensions: ['js', 'jsx', 'md', 'mdx'],
-
-    publicRuntimeConfig: Object.assign(
-      {
-        assetPrefix,
-        production: NODE_ENV === 'production'
-      },
-      nextConfig.publicRuntimeConfig
-    ),
-
-    webpack(config, options) {
-      if (!options.defaultLoaders) {
-        throw new Error(
-          'This plugin is not compatible with Next.js versions below 5.0.0 https://err.sh/next-plugins/upgrade'
-        )
-      }
-
-      config.module.rules.push({
-        test: /\.svg$/,
-        use: '@svgr/webpack'
-      })
-
-      config.module.rules.push({
-        test: /\.mdx?$/,
-        use: [options.defaultLoaders.babel, require.resolve('./mdx-loader')]
-      })
-
-      if (typeof nextConfig.webpack === 'function') {
-        return nextConfig.webpack(config, options)
-      }
-
-      return config
-    }
-  })
-}

lib/mdx-loader.js

@@ -1,48 +0,0 @@
-const {getOptions} = require('loader-utils')
-const mdx = require('@mdx-js/mdx')
-
-const emoji = require('remark-emoji')
-const images = require('remark-images')
-const rehypePrism = require('./rehype-prism')
-const textr = require('remark-textr')
-const toc = require('remark-toc')
-
-const mdxExportJSONByDefault = require('mdx-constant')
-const grayMatter = require('gray-matter')
-const typographicBase = require('typographic-base')
-
-module.exports = async function(source) {
-  let result
-  const {data, content: mdxContent} = grayMatter(source)
-  const callback = this.async()
-
-  const options = Object.assign(
-    {
-      mdPlugins: [
-        [toc, {heading: '(table of|section)? contents'}],
-        images,
-        emoji,
-        [textr, {plugins: [typographicBase]}]
-      ],
-      hastPlugins: [rehypePrism],
-      compilers: [mdxExportJSONByDefault('frontMatter', data)]
-    },
-    getOptions(this),
-    {filepath: this.resourcePath}
-  )
-
-  try {
-    result = await mdx(mdxContent, options)
-  } catch (err) {
-    return callback(err)
-  }
-
-  return callback(
-    null,
-    `
-import React from 'react'
-import {MDXTag} from '@mdx-js/tag'
-${result}
-`
-  )
-}

lib/rehype-prism.js

@@ -1,62 +0,0 @@
-const visit = require('unist-util-visit')
-const nodeToString = require('hast-util-to-string')
-const nodeToHTML = require('hast-util-to-html')
-const refractor = require('refractor')
-
-const aliases = {
-  js: 'jsx',
-  html: 'markup'
-}
-
-module.exports = options => {
-  options = options || {}
-
-  return tree => visit(tree, 'element', visitor)
-
-  function visitor(node, index, parent) {
-    if (!parent || parent.tagName !== 'pre' || node.tagName !== 'code') {
-      return
-    }
-
-    const lang = getLanguage(node, options.aliases || aliases)
-
-    if (lang === null) {
-      return
-    }
-
-    let result = node
-    const source = nodeToString(node)
-    try {
-      parent.properties.className = (parent.properties.className || []).concat(`language-${lang}`)
-      result = refractor.highlight(source, lang)
-    } catch (err) {
-      if (/Unknown language/.test(err.message)) {
-        return
-      }
-      throw err
-    }
-
-    node.children = []
-    node.properties.source = source
-    node.properties.dangerouslySetInnerHTML = {
-      __html: nodeToHTML({
-        type: 'root',
-        children: result
-      })
-    }
-  }
-}
-
-function getLanguage(node, aliases) {
-  const className = node.properties.className || []
-
-  for (const classListItem of className) {
-    if (classListItem.slice(0, 9) === 'language-') {
-      const language = classListItem.slice(9).replace(/{.*/, '')
-      const alias = aliases[language]
-      return alias || language
-    }
-  }
-
-  return null
-}