chore(lint): use helix-eslint-config and update deps

- @adobe/eslint-config-helix: 1.0.0
- @pollyjs/adapter-fetch: 2.6.2
- @pollyjs/adapter-node-http: 2.6.2
- @pollyjs/core: 2.6.2
- @pollyjs/persister-fs: 2.6.2
- eslint: 6.1.0
- eslint-plugin-import: 2.18.2
- lint-staged: 9.2.1
- mocha: 6.2.0
- lodash: 4.17.15
- remark-parse: 7.0.1
- snyk: 1.216.0
- strip-markdown: 3.1.0
- unist-util-find-all-between: 1.0.6

.eslintrc.js

@@ -11,56 +11,17 @@
  */
 
 module.exports = {
-  'env': {
-    'node': true,
-    'es6': true
-  },
-  // this is the root project for all sub modules. stop searching for any
-  // eslintrc files in parent directories.
-  'root': true,
-  'parserOptions': {
-    'sourceType': 'script',
-    // async/await support
-    'ecmaVersion': 2018,
-  },
-  'plugins': [
-    'header',
-  ],
-  'extends': 'airbnb',
-  'rules': {
-    'strict': 0,
-
+  root: true,
+  extends: '@adobe/helix',
+  rules: {
     // Allow while (true) infinite loops
     'no-constant-condition': ["error", { "checkLoops": false }],
 
-    // Forbid multiple statements in one line
-    'max-statements-per-line': ["error", { "max": 1 }],
-
-    // Allow for-of loops
-    'no-restricted-syntax': ['error', 'ForInStatement', 'LabeledStatement', 'WithStatement'],
-
-    // Allow return before else & redundant else statements
-    'no-else-return': 'off',
-
     // Quite useful to mark values as unused
     'no-underscore-dangle': 'off',
 
     // We have quite a lot of use cases where assignment to function
     // parameters is definitely desirable
     'no-param-reassign': 'off',
-
-    // enforce license header
-    'header/header': [2, 'block', ['',
-      { pattern: ' * Copyright \\d{4} Adobe\\. All rights reserved\\.', template: ' * Copyright 2019 Adobe. All rights reserved.'},
-      ' * This file is licensed to you under the Apache License, Version 2.0 (the "License");',
-      ' * you may not use this file except in compliance with the License. You may obtain a copy',
-      ' * of the License at http://www.apache.org/licenses/LICENSE-2.0',
-      ' *',
-      ' * Unless required by applicable law or agreed to in writing, software distributed under',
-      ' * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS',
-      ' * OF ANY KIND, either express or implied. See the License for the specific language',
-      ' * governing permissions and limitations under the License.',
-      ' ',
-    ]]
   }
 };

bin/schema2ts.js

@@ -52,5 +52,5 @@ const options = {
  */`,
 };
 
-compileFromFile('docs/context.schema.json', options).then(ts => writeFileSync('src/context.d.ts', ts));
-compileFromFile('docs/action.schema.json', options).then(ts => writeFileSync('src/action.d.ts', ts));
+compileFromFile('docs/context.schema.json', options).then((ts) => writeFileSync('src/context.d.ts', ts));
+compileFromFile('docs/action.schema.json', options).then((ts) => writeFileSync('src/action.d.ts', ts));