feat(typescript): Source code rewrite using typescript (react-native-webview#425)

Rewrote the whole repository into typescript. This will provide way better and up to date documentation. This should also add some safety for people contributing 😄 .
Flow types were not working until now which is why this PR doesn't have them but feel free to PR.

This also fixes react-native-webview#384 react-native-webview#435 react-native-webview#206 react-native-webview#171 react-native-webview#168.

Author: Titozzz

.circleci/config.yml

@@ -35,7 +35,7 @@ jobs:
 
       - run:
           name: Run Tests
-          command: yarn ci:test
+          command: yarn ci
 
   publish:
     <<: *defaults

.eslintignore

@@ -0,0 +1 @@
+lib/

.eslintrc.js

@@ -0,0 +1,75 @@
+module.exports = {
+  // Airbnb is the base, prettier is here so that eslint doesn't conflict with prettier
+  extends: ['airbnb', 'prettier', 'prettier/react'],
+  parser: '@typescript-eslint/parser',
+  plugins: ['react', 'react-native', 'import', '@typescript-eslint'],
+  rules: {
+    'no-console': 'off',
+    // Lines will be broken before binary operators
+    'operator-linebreak': ['error', 'before'],
+    // Allow imports from dev and peer dependencies
+    'import/no-extraneous-dependencies': [
+      'error',
+      { devDependencies: true, peerDependencies: true },
+    ],
+    'react/jsx-filename-extension': ['error', { extensions: ['.tsx'] }],
+    // This rule doesn't play nice with Prettier
+    'react/jsx-one-expression-per-line': 'off',
+    // This rule doesn't play nice with Prettier
+    'react/jsx-wrap-multilines': 'off',
+    // Remove this rule because we only destructure props, but never state
+    'react/destructuring-assignment': 'off',
+    'react/prop-types': 'off',
+    '@typescript-eslint/adjacent-overload-signatures': 'error',
+    '@typescript-eslint/array-type': ['error', 'array'],
+    '@typescript-eslint/generic-type-naming': ['error', '^[a-zA-Z]+$'],
+    '@typescript-eslint/no-angle-bracket-type-assertion': 'error',
+    '@typescript-eslint/no-array-constructor': 'error',
+    '@typescript-eslint/no-empty-interface': 'error',
+    '@typescript-eslint/no-explicit-any': 'error',
+    '@typescript-eslint/no-extraneous-class': 'error',
+    '@typescript-eslint/no-inferrable-types': 'error',
+    '@typescript-eslint/no-misused-new': 'error',
+    '@typescript-eslint/no-namespace': 'error',
+    '@typescript-eslint/no-non-null-assertion': 'error',
+    '@typescript-eslint/no-object-literal-type-assertion': 'error',
+    '@typescript-eslint/no-parameter-properties': 'error',
+    '@typescript-eslint/no-this-alias': 'error',
+    '@typescript-eslint/no-triple-slash-reference': 'error',
+    '@typescript-eslint/no-type-alias': [
+      'error',
+      {
+        allowAliases: 'always',
+        allowCallbacks: 'always',
+        allowMappedTypes: 'always',
+      },
+    ],
+    '@typescript-eslint/no-unused-vars': [
+      'error',
+      { ignoreRestSiblings: true },
+    ],
+    '@typescript-eslint/prefer-interface': 'error',
+    '@typescript-eslint/prefer-namespace-keyword': 'error',
+    '@typescript-eslint/type-annotation-spacing': 'error',
+  },
+  settings: {
+    'import/resolver': {
+      node: {
+        extensions: [
+          '.js',
+          '.android.js',
+          '.ios.js',
+          '.jsx',
+          '.android.jsx',
+          '.ios.jsx',
+          '.tsx',
+          '.ts',
+          '.android.tsx',
+          '.android.ts',
+          '.ios.tsx',
+          '.ios.ts',
+        ],
+      },
+    },
+  },
+};

.gitignore

@@ -51,4 +51,6 @@ bundles/
 
 android/gradle
 android/gradlew
-android/gradlew.bat
+android/gradlew.bat
+
+lib/

.prettierrc.js

@@ -0,0 +1,10 @@
+// https://prettier.io/docs/en/options.html
+
+module.exports = {
+  // Enables semicolons at the end of statements
+  semi: true,
+  // Formats strings with single quotes ('') instead of quotes ("")
+  singleQuote: true,
+  // Adds a trailing comma at the end of all lists (including function arguments)
+  trailingComma: 'all',
+};

.vscode/settings.json

@@ -0,0 +1,9 @@
+{
+  "typescript.tsdk": "node_modules/typescript/lib",
+  "eslint.validate": [
+    "javascript",
+    "javascriptreact",
+    "typescript",
+    "typescriptreact"
+  ]
+}