build(yarn): upgrade Yarn

switch to Yarn 2.x Berry

.gitignore

@@ -138,6 +138,17 @@ typings/
 # Output of 'npm pack'
 *.tgz
 
+# Yarn: https://next.yarnpkg.com/advanced/qa#which-files-should-be-gitignored
+!.yarn/plugins
+!.yarn/releases
+!.yarn/versions
+## If you're using Zero-Installs:
+.yarn/unplugged
+.yarn/build-state.yml
+## Also, if you're *not* using Zero-Installs:
+.yarn/cache
+.pnp.*
+
 # Yarn Integrity file
 .yarn-integrity
 

.yarnrc.yml

@@ -0,0 +1 @@
+yarnPath: ".yarn/releases/yarn-berry.js"

package.json

@@ -19,9 +19,6 @@
     "@reduxjs/toolkit": "1.2.5",
     "axios": "0.19.2",
     "clsx": "1.1.0",
-    "enzyme": "3.11.0",
-    "enzyme-adapter-react-16": "1.15.2",
-    "jest-enzyme": "7.1.2",
     "konva": "4.1.5",
     "monaco-editor": "0.19.3",
     "prop-types": "15.7.2",
@@ -61,6 +58,8 @@
     "codecov": "3.6.5",
     "commitizen": "4.0.3",
     "cz-conventional-changelog": "3.1.0",
+    "enzyme": "3.11.0",
+    "enzyme-adapter-react-16": "1.15.2",
     "eslint": "6.8.0",
     "eslint-config-airbnb-typescript": "7.0.0",
     "eslint-config-react-app": "5.2.0",
@@ -71,6 +70,7 @@
     "eslint-plugin-react-hooks": "1.7.0",
     "eslint-plugin-tsdoc": "0.2.1",
     "jest": "24.9.0",
+    "jest-enzyme": "7.1.2",
     "jest-junit": "10.0.0",
     "now": "17.0.3",
     "react-test-renderer": "16.12.0",