Cleanup from Flow and Babel (#676)

Author: IvanGoncharov

.babelrc.json

@@ -1,19 +1,16 @@
-parser: babel-eslint
 parserOptions:
-  sourceType: module
+  sourceType: script
+  ecmaVersion: 2020
 env:
   es6: true
   node: true
 reportUnusedDisableDirectives: true
 plugins:
   - internal-rules
-  - flowtype
   - node
   - istanbul
   - import
 settings:
-  flowtype:
-    onlyFilesWithFlowAnnotation: true
   node:
     tryExtensions: ['.js', '.json', '.node', '.ts', '.d.ts']
 
@@ -25,54 +22,6 @@ rules:
 
   internal-rules/no-dir-import: error
 
-  ##############################################################################
-  # `eslint-plugin-flowtype` rule list based on `v5.2.x`
-  # https://github.com/gajus/eslint-plugin-flowtype#eslint-plugin-flowtype
-  ##############################################################################
-
-  flowtype/array-style-complex-type: error
-  flowtype/array-style-simple-type: error
-  flowtype/define-flow-type: error
-  flowtype/newline-after-flow-annotation: error
-  flowtype/no-dupe-keys: error
-  flowtype/no-existential-type: off # checked by Flow
-  flowtype/no-flow-fix-me-comments: error
-  flowtype/no-mixed: off
-  flowtype/no-mutable-array: off
-  flowtype/no-primitive-constructor-types: error
-  flowtype/no-types-missing-file-annotation: error
-  flowtype/no-unused-expressions: off
-  flowtype/no-weak-types: [error, { any: false }]
-  flowtype/require-compound-type-alias: off
-  flowtype/require-exact-type: error
-  flowtype/require-indexer-name: error
-  flowtype/require-inexact-type: off # checked by Flow
-  flowtype/require-parameter-type: off
-  flowtype/require-readonly-react-props: off
-  flowtype/require-return-type: off
-  flowtype/require-types-at-top: off
-  flowtype/require-valid-file-annotation:
-    [error, always, { annotationStyle: line, strict: true }]
-  flowtype/require-variable-type: off
-  flowtype/sort-keys: off
-  flowtype/spread-exact-type: off
-  flowtype/type-id-match: [error, '^[A-Z]|^\$']
-  flowtype/type-import-style: [error, declaration]
-  flowtype/use-flow-type: error
-
-  # Bellow rules are disabled because coflicts with Prettier, see:
-  # https://github.com/prettier/eslint-config-prettier/blob/master/flowtype.js
-  flowtype/arrow-parens: off
-  flowtype/boolean-style: off
-  flowtype/delimiter-dangle: off
-  flowtype/generic-spacing: off
-  flowtype/object-type-delimiter: off
-  flowtype/semi: off
-  flowtype/space-after-type-colon: off
-  flowtype/space-before-generic-bracket: off
-  flowtype/space-before-type-colon: off
-  flowtype/union-intersection-spacing: off
-
   ##############################################################################
   # `eslint-plugin-istanbul` rule list based on `v0.1.2`
   # https://github.com/istanbuljs/eslint-plugin-istanbul#rules
@@ -488,14 +437,13 @@ overrides:
   - files: '**/*.ts'
     parser: '@typescript-eslint/parser'
     parserOptions:
+      sourceType: module
       project: ['tsconfig.json']
     plugins:
       - '@typescript-eslint'
     extends:
       - plugin:import/typescript
     rules:
-      flowtype/no-types-missing-file-annotation: off
-
       ##########################################################################
       # `@typescript-eslint/eslint-plugin` rule list based on `v3.5.x`
       ##########################################################################
@@ -639,8 +587,6 @@ overrides:
       import/no-extraneous-dependencies: [error, { devDependencies: true }]
       import/no-nodejs-modules: off
   - files: 'integrationTests/**'
-    parserOptions:
-      sourceType: script
     rules:
       node/no-unpublished-import: off
       node/no-unpublished-require: off
@@ -649,8 +595,6 @@ overrides:
       import/no-nodejs-modules: off
       no-console: off
   - files: 'resources/**'
-    parserOptions:
-      sourceType: script
     rules:
       node/no-unpublished-import: off
       node/no-unpublished-require: off
@@ -664,8 +608,6 @@ overrides:
       no-await-in-loop: off
       no-console: off
   - files: 'examples/**'
-    parserOptions:
-      sourceType: module
     rules:
       internal-rules/no-dir-import: off
       node/no-unpublished-import: off

.eslintrc.yml

@@ -1,5 +1,3 @@
-// @noflow
-
 'use strict';
 
 const os = require('os');

.flowconfig

@@ -1,5 +1,3 @@
-// @noflow
-
 'use strict';
 
 const path = require('path');