refactor(v2): add flowtype + refactor test (#1443)

* chore(v2): add flow setup

* nits

* fix

* add flow-typed

* ignore compiled library

* fix error

* fix typing

* fix module name mapper

* setup for @docusaurus/core

* dont try remove type without @flow

* fix can't find @docusaurus/utils

* fix test

* remove obscure relative paths

* more refactoring

* add typing for server/load/theme.js

* no need to ship .flow source

Author: endiliey

.circleci/config.yml

@@ -41,6 +41,9 @@ jobs:
       - run:
           name: Check ESLint
           command: yarn lint
+      - run:
+          name: Check Flow
+          command: yarn flow check
       - run:
           name: Check Prettier
           command: yarn prettier:diff

.eslintignore

@@ -10,3 +10,5 @@ scripts
 packages/docusaurus-1.x/lib/core/metadata.js
 packages/docusaurus-1.x/lib/core/MetadataBlog.js
 packages/docusaurus-1.x/lib/core/__tests__/split-tab.test.js
+packages/docusaurus-utils/lib
+packages/docusaurus/lib

.flowconfig

@@ -0,0 +1,14 @@
+[ignore]
+<PROJECT_ROOT>/packages/.*/lib
+<PROJECT_ROOT>/packages/.*/__tests__
+
+[include]
+
+[libs]
+
+[lints]
+
+[options]
+module.name_mapper='^@docusaurus\/\([a-zA-Z0-9_\-]+\)$' -> '<PROJECT_ROOT>/packages/docusaurus-\1/src/index'
+
+[strict]

.gitignore

@@ -11,3 +11,6 @@ yarn-error.log
 build
 .docusaurus
 .cache-loader
+packages/docusaurus-utils/lib
+packages/docusaurus/lib/
+

.prettierignore

@@ -1,4 +1,7 @@
 dist
 node_modules
 build
-.docusaurus
+.docusaurus
+packages/docusaurus-utils/lib
+packages/docusaurus/lib
+flow-typed

babel.config.js

@@ -6,7 +6,18 @@
  */
 
 module.exports = {
-  presets: ['@babel/env', '@babel/react'],
+  presets: [
+    [
+      '@babel/env',
+      {
+        targets: {
+          node: 'current',
+        },
+      },
+    ],
+    '@babel/react',
+    '@babel/preset-flow',
+  ],
   plugins: [
     '@babel/plugin-proposal-class-properties',
     '@babel/plugin-proposal-object-rest-spread',

jest.transform.js renamed to flow-typed/npm/escape-string-regexp_v1.x.x.js

@@ -5,6 +5,6 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-const babelConfig = require('./babel.config');
-
-module.exports = require('babel-jest').createTransformer(babelConfig);
+declare module 'escape-string-regexp' {
+  declare module.exports: (input: string) => string;
+}