build: switch to yarn 3 with legacy node modules

.gitignore

@@ -70,6 +70,14 @@ jspm_packages/
 # Output of 'npm pack'
 *.tgz
 
+# https://yarnpkg.com/getting-started/qa#which-files-should-be-gitignored
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions
 # Yarn Integrity file
 .yarn-integrity
 
@@ -113,4 +121,4 @@ packages/dbaeumer*
 .netlify
 
 # Vscode History Extension
-.history
+.history

.yarnrc.yml

@@ -0,0 +1,4 @@
+yarnPath: .yarn/releases/yarn-3.2.0.cjs
+# Use legacy mode with node modules
+nodeLinker: node-modules
+npmRegistryServer: https://registry.yarnpkg.com

package.json

@@ -1,5 +1,5 @@
 {
-  "name": "salesforcedx-vscode",
+  "name": "salesforcedx-vscode-mono-repo",
   "repository": "forcedotcom/salesforcedx-vscode",
   "license": "BSD-3-Clause",
   "private": true,
@@ -10,10 +10,6 @@
     "node": ">=16.13.0",
     "yarn": ">=1.22.15"
   },
-  "dependencies": {
-    "node": "^16.13.0",
-    "npm": "^8.1.2"
-  },
   "devDependencies": {
     "@commitlint/cli": "^15.0.0",
     "@commitlint/config-conventional": "^15.0.0",
@@ -49,7 +45,7 @@
     "webpack-cli": "3.3.12"
   },
   "scripts": {
-    "postinstall": "lerna bootstrap --no-ci -- --no-package-lock && node scripts/reformat-with-prettier && npm run check:peer-deps && npm run check:typescript-project-references",
+    "postinstall": "node scripts/reformat-with-prettier && npm run check:peer-deps && npm run check:typescript-project-references",
     "bootstrap": "lerna bootstrap --no-ci -- --no-package-lock && node scripts/reformat-with-prettier",
     "circleci:artifacts": "node scripts/download-vsix-from-circleci.js",
     "commit-init": "commitizen init cz-conventional-changelog --save-dev --save-exact --force",
@@ -101,5 +97,6 @@
     "commitizen": {
       "path": "./node_modules/cz-conventional-changelog"
     }
-  }
+  },
+  "packageManager": "[email protected]"
 }