chore: add custom eslint rule for adding license-checks (#141)

* chore: add custom eslint rule for adding license-checks

* move standard & prettier as plugin

.editorconfig

@@ -0,0 +1,14 @@
+# editorconfig.org
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.{md,asciidoc}]
+trim_trailing_whitespace = false
+insert_final_newline = false

.eslintignore

@@ -0,0 +1,6 @@
+build
+docs
+coverage
+dist
+*.e2e-bundle.*
+test/e2e/sourcemap

.eslintrc.js

@@ -1,10 +1,35 @@
+const { readFileSync } = require('fs')
+const { join } = require('path')
+/**
+ * Helps with using custom eslint rules without creating and publishing as plugin
+ */
+const rulesDirPlugin = require('eslint-plugin-rulesdir')
+rulesDirPlugin.RULES_DIR = join(__dirname, 'scripts/eslint-rules')
+
+const MIT_LICENSE = readFileSync('./LICENSE', 'utf-8')
+const LICENSE_HEADER =
+  '/**\n' +
+  MIT_LICENSE.split('\n')
+    .map(line => ` * ${line}`)
+    .join('\n') +
+  '\n */'
+
 module.exports = {
-    "env": {
-        "es6": true
-    },
-    "rules": {
-        "max-len": ["error", { "code": 100 }],
-        'no-unused-vars': 'error',
-        'space-before-function-paren': 'error'
-    }
-}
+  env: {
+    es6: true,
+    browser: true
+  },
+  parser: 'babel-eslint',
+  plugins: ['prettier', 'standard', 'rulesdir'],
+  rules: {
+    'max-len': ['error', { code: 100, ignoreComments: true }],
+    'no-unused-vars': 'error',
+    'space-before-function-paren': 'error',
+    'rulesdir/require-license-header': [
+      'error',
+      {
+        license: LICENSE_HEADER
+      }
+    ]
+  }
+}

babel.config.js

@@ -1,3 +1,28 @@
+/**
+ * MIT License
+ *
+ * Copyright (c) 2017-present, Elasticsearch BV
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
 module.exports = function (api) {
   api.cache(true)
   return {

karma.conf.js

@@ -1,3 +1,28 @@
+/**
+ * MIT License
+ *
+ * Copyright (c) 2017-present, Elasticsearch BV
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
 var karmaUtils = require('elastic-apm-js-core/dev-utils/karma.js')
 
 module.exports = function (config) {