remove core-js (#167)

* remove core-js

* update readme

* npm update

* 9.0.0-1

* Fix babel warning by explicitly setting loose: true for private-methods

* 9.0.0-2

* Fix babel proposal ordering

* 9.0.0-3

* lint fixes

* 9.0.0-4

* Trigger drone build on branch instead of event

Co-authored-by: adi518 <[email protected]>
Co-authored-by: Jeremy Gayed <[email protected]>
Co-authored-by: Bryan Gergen <[email protected]>

Author: 4 people

Diff for: .babelrc

@@ -2,16 +2,8 @@
   "plugins": [
     ["@babel/plugin-proposal-decorators", { "legacy": true }],
     ["@babel/plugin-proposal-class-properties", { "loose": true }],
+    ["@babel/plugin-proposal-private-methods", { "loose": true }],
     "@babel/plugin-proposal-object-rest-spread"
   ],
-  "presets": [
-    [
-      "@babel/preset-env",
-      {
-        "useBuiltIns": "usage",
-        "corejs": 3
-      }
-    ],
-    "@babel/preset-react"
-  ]
+  "presets": ["@babel/preset-env", "@babel/preset-react"]
 }

Diff for: .drone.yml

@@ -15,8 +15,8 @@ steps:
       - npm run prepare
 
 trigger:
-  event:
-    - push
+  branch:
+    - master
 
 ---
 kind: pipeline
@@ -36,8 +36,8 @@ steps:
       - npm run prepare
 
 trigger:
-  event:
-    - push
+  branch:
+    - master
 
 ---
 kind: pipeline
@@ -57,5 +57,5 @@ steps:
       - npm run prepare
 
 trigger:
-  event:
-    - push
+  branch:
+    - master

Diff for: README.md

@@ -493,7 +493,7 @@ This library simply merges the tracking data objects together (as it flows throu
 
 You can get the type definitions for React Tracking from DefinitelyTyped using `@types/react-tracking`. For an always up-to-date example of syntax, you should consult [the react-tracking type tests](https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/react-tracking/test/react-tracking-with-types-tests.tsx).
 
-### PropType support
+### PropType Support
 
 The `props.tracking` PropType is exported for use, if desired:
 
@@ -510,3 +510,7 @@ Alternatively, if you want to just silence proptype errors when using [eslint re
   }
 }
 ```
+
+### Old Browsers Support
+
+Going forward from version `9.x`, we do not bundle `core-js` (ES6 polyfills) anymore. To support old browsers, please add [`core-js`](https://github.com/zloirock/core-js) to your project.

Diff for: jest.config.js

@@ -1,3 +1,3 @@
 module.exports = {
-  setupFiles: ['raf/polyfill', './setup/enzymeAdapter.js'],
+  setupFiles: ['raf/polyfill', './jest.setup.js', './setup/enzymeAdapter.js'],
 };

Diff for: jest.setup.js

@@ -0,0 +1 @@
+import 'regenerator-runtime/runtime';