Swap to yarn 2 (#1973)

* Swap to yarn 2

* Bump dev

* "@polkadot/typegen": "workspace:packages/typegen"

.gitignore

@@ -13,6 +13,10 @@ tmp/
 .env.production.local
 .npmrc
 .rpt2_cache
+.yarn/*
+!.yarn/releases
+!.yarn/plugins
+.pnp.*
 .vscode/
 cc-test-reporter
 lerna-debug.log*

.yarnrc.yml

@@ -0,0 +1,12 @@
+enableImmutableInstalls: false
+enableProgressBars: false
+
+nodeLinker: node-modules
+
+plugins:
+  - path: .yarn/plugins/@yarnpkg/plugin-version.js
+    spec: "@yarnpkg/plugin-version"
+  - path: .yarn/plugins/@yarnpkg/plugin-interactive-tools.js
+    spec: "@yarnpkg/plugin-interactive-tools"
+
+yarnPath: .yarn/releases/yarn-berry.js

package.json

@@ -26,8 +26,9 @@
     "@babel/core": "^7.8.4",
     "@babel/register": "^7.8.3",
     "@babel/runtime": "^7.8.4",
-    "@polkadot/dev": "^0.50.7",
+    "@polkadot/dev": "^0.50.9",
     "@polkadot/ts": "^0.3.1",
+    "@polkadot/typegen": "workspace:packages/typegen",
     "copyfiles": "^2.2.0"
   }
 }