Fix Vue, document and test rest

* Update readmes
* Fix code style
* Add 100% coverage to renderers, babel plugins, loaders, runtime
* Add todos inline for potentially broken things
* Fix Vue to have tests, support properties, support Vue components
* Soft deprecate `@mdx-js/util`, `@mdx-js/test-util`,
  `babel-plugin-html-attributes-to-jsx`: their contents weren’t used or not
  reused
* Set up tests in each package, to allow for different test methods (e.g.,
  vue, remark-mdx)
* Stop locking dev-dependencies
* Move several dev-dependencies from the root `package.json` to the places
  that depend on them
* Remove unused dev-dependencies
* Remove unused `yarn.lock`s in non-root
* Use `microbundle` for preact, react, and vue
* Fix installing, building, formatting, and testing
* Fix actions

Closes GH-1338.

Reviewed-by: Christian Murphy <[email protected]>

Author: wooorm

.eslintignore

@@ -18,8 +18,7 @@ packages/gatsby-theme-mdx/src/components/search.js
 
 packages/remark-mdx
 
-# tmp
+# To do: Vue should be checked.
 examples/vue
-packages/vue
 
 readme.md

.eslintrc.yml

@@ -43,15 +43,13 @@ settings:
     version: 16.3.2
 
 overrides:
-  - files: '*.md'
-    extends: plugin:mdx/recommended
-
   - files: '*.mdx'
     extends:
       - plugin:mdx/recommended
       - plugin:mdx/overrides
     rules:
       import/no-extraneous-dependencies: 0
+      prettier/prettier: 0
 
   - files:
       - '**/test/**/*.js'

.github/workflows/ci.yml

@@ -7,46 +7,25 @@ jobs:
     name: Build and Test on ${{ matrix.os }} with Node.js ${{ matrix.node }}
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest]
-        node: [10, 14]
+        os:
+          - ubuntu-latest
+          - windows-latest
+        node:
+          - 10
+          - 14
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2
-
       - uses: actions/setup-node@v2-beta
         with:
           node-version: ${{ matrix.node }}
-
-      - name: Setup yarn
-        if: matrix.os != 'windows-latest'
-        run: |
-          curl -o- -L https://yarnpkg.com/install.sh | bash
-          export PATH="$HOME/.yarn/bin:$PATH"
-
-      - name: Get yarn cache directory path
-        id: yarn-cache-dir-path
-        run: echo "::set-output name=dir::$(yarn cache dir)"
-
-      - uses: actions/cache@v2
-        id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
-        with:
-          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
-          key: ${{ runner.os }}-${{ matrix.node }}-yarn-${{ hashFiles('**/yarn.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-${{ matrix.node }}-yarn-
-
-      - name: Install Dependencies
+      - name: Install
         run: yarn --frozen-lockfile
         env:
           CI: 'true'
-
-      - name: Build
-        if: matrix.os != 'windows-latest'
-        run: yarn build
-
       - name: Test
         run: yarn test
-
+      # To do: macos isn’t used anymore
       - name: Publish CI tag to npm
         if: matrix.node == 12 && matrix.os == 'macOS-latest' && github.event_name == 'push' && github.ref	== 'refs/heads/master'
         run: |

.github/workflows/lint.yml

@@ -15,3 +15,4 @@ public
 .npmrc
 .nyc_output/
 coverage/
+.yarn

.github/workflows/types.yml

@@ -1,22 +1,10 @@
-const unified = require('unified')
-const english = require('retext-english')
-const wooorm = require('retext-preset-wooorm')
-
 module.exports = {
   plugins: [
     './packages/remark-mdx',
     './packages/remark-mdxjs',
     'preset-wooorm',
     'preset-prettier',
-    [
-      'retext',
-      unified()
-        .use(english)
-        .use(wooorm)
-        .use({
-          plugins: [[require('retext-sentence-spacing'), false]]
-        })
-    ],
+    ['retext', false],
     ['validate-links', false]
   ]
 }

.gitignore

@@ -13,7 +13,6 @@ improve the developer experience for TypeScript users.
 - `@mdx-js/react`
 - `@mdx-js/runtime`
 - `@mdx-js/vue`
-- `@mdx-js/util`
 - `remark-mdx`
 - `remark-mdx-remove-exports`
 - `remark-mdx-remove-imports`
@@ -26,15 +25,15 @@ Include types, no additional setup needed.
 
 ### React and Webpack
 
-Add an _mdx.d.ts_ file with the below content, and ensure it is included by the _tsconfig.json_.
+Add an `mdx.d.ts` file with the below content, and ensure it is included by the `tsconfig.json`.
 
 ```tsx
 /// <reference types="@mdx-js/loader" />
 ```
 
 ### Vue and Webpack
 
-Add an _mdx.d.ts_ file with the below content, and ensure it is included by the _tsconfig.json_.
+Add an `mdx.d.ts` file with the below content, and ensure it is included by the `tsconfig.json`.
 
 ```tsx
 /// <reference types="@mdx-js/vue-loader" />