Migrate to Yarn v3

.gitattributes

@@ -1,3 +1,8 @@
 * text=auto
 
 yarn.lock linguist-generated=false
+
+# yarn v3
+# See: https://yarnpkg.com/getting-started/qa#which-files-should-be-gitignored
+/.yarn/releases/** binary
+/.yarn/plugins/** binary

.github/workflows/build-lint-test.yml

@@ -19,7 +19,7 @@ jobs:
         with:
           node-version: ${{ matrix.node-version }}
       - name: Get Yarn cache directory
-        run: echo "YARN_CACHE_DIR=$(yarn cache dir)" >> "$GITHUB_OUTPUT"
+        run: echo "YARN_CACHE_DIR=$(yarn config get cacheFolder)" >> "$GITHUB_OUTPUT"
         id: yarn-cache-dir
       - name: Get Yarn version
         run: echo "YARN_VERSION=$(yarn --version)" >> "$GITHUB_OUTPUT"
@@ -29,8 +29,7 @@ jobs:
         with:
           path: ${{ steps.yarn-cache-dir.outputs.YARN_CACHE_DIR }}
           key: yarn-cache-${{ runner.os }}-${{ steps.yarn-version.outputs.YARN_VERSION }}-${{ hashFiles('yarn.lock') }}
-      - run: yarn install --frozen-lockfile
-      - run: yarn setup:postinstall
+      - run: yarn --immutable
       - run: yarn build
       - run: yarn lint
       - run: yarn test
@@ -45,9 +44,8 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version: ${{ steps.nvm.outputs.NODE_VERSION }}
-      - run: yarn --frozen-lockfile
+      - run: yarn --immutable
       - run: yarn build
-      - run: yarn setup:postinstall
       - name: Validate RC changelog
         if: ${{ startsWith(github.head_ref, 'release/') }}
         run: yarn changelog validate --rc

.gitignore

@@ -66,9 +66,12 @@ node_modules/
 # Stores VSCode versions used for testing VSCode extensions
 .vscode-test
 
-# yarn v2
-.yarn/cache
-.yarn/unplugged
-.yarn/build-state.yml
-.yarn/install-state.gz
+# yarn v3 (w/o zero-install)
+# See: https://yarnpkg.com/getting-started/qa#which-files-should-be-gitignored
 .pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions

.yarn/plugins/@yarnpkg/plugin-allow-scripts.cjs

@@ -0,0 +1,9 @@
+/* eslint-disable */
+//prettier-ignore
+module.exports = {
+name: "@yarnpkg/plugin-allow-scripts",
+factory: function (require) {
+var plugin=(()=>{var a=Object.create,l=Object.defineProperty;var i=Object.getOwnPropertyDescriptor;var s=Object.getOwnPropertyNames;var p=Object.getPrototypeOf,c=Object.prototype.hasOwnProperty;var u=e=>l(e,"__esModule",{value:!0});var f=e=>{if(typeof require!="undefined")return require(e);throw new Error('Dynamic require of "'+e+'" is not supported')};var g=(e,o)=>{for(var r in o)l(e,r,{get:o[r],enumerable:!0})},m=(e,o,r)=>{if(o&&typeof o=="object"||typeof o=="function")for(let t of s(o))!c.call(e,t)&&t!=="default"&&l(e,t,{get:()=>o[t],enumerable:!(r=i(o,t))||r.enumerable});return e},x=e=>m(u(l(e!=null?a(p(e)):{},"default",e&&e.__esModule&&"default"in e?{get:()=>e.default,enumerable:!0}:{value:e,enumerable:!0})),e);var k={};g(k,{default:()=>d});var n=x(f("@yarnpkg/shell")),y={hooks:{afterAllInstalled:async()=>{let e=await(0,n.execute)("yarn run allow-scripts");e!==0&&process.exit(e)}}},d=y;return k;})();
+return plugin;
+}
+};

.yarnrc.yml

@@ -0,0 +1,15 @@
+enableScripts: false
+
+enableTelemetry: 0
+
+logFilters:
+  - code: YN0004
+    level: discard
+
+nodeLinker: node-modules
+
+plugins:
+  - path: .yarn/plugins/@yarnpkg/plugin-allow-scripts.cjs
+    spec: "https://raw.githubusercontent.com/LavaMoat/LavaMoat/main/packages/yarn-plugin-allow-scripts/bundles/@yarnpkg/plugin-allow-scripts.js"
+
+yarnPath: .yarn/releases/yarn-3.2.4.cjs

README.md

@@ -89,9 +89,8 @@ try {
 
 - Install [Node.js](https://nodejs.org) version 14
   - If you are using [nvm](https://github.com/creationix/nvm#installation) (recommended) running `nvm use` will automatically choose the right node version for you.
-- Install [Yarn v1](https://yarnpkg.com/en/docs/install)
-- Run `yarn setup` to install dependencies and run any requried post-install scripts
-  - **Warning**: Do not use the `yarn` / `yarn install` command directly. Use `yarn setup` instead. The normal install command will skip required post-install scripts, leaving your development environment in an invalid state.
+- Install [Yarn v3](https://yarnpkg.com/getting-started/install)
+- Run `yarn install` to install dependencies and run any required post-install scripts
 
 ### Testing and Linting
 

package.json

@@ -19,13 +19,11 @@
     "url": "https://github.com/MetaMask/auto-changelog.git"
   },
   "scripts": {
-    "setup": "yarn install && yarn setup:postinstall",
-    "setup:postinstall": "yarn allow-scripts",
     "test": "jest",
     "test:watch": "jest --watch",
-    "prepublishOnly": "yarn build:clean && chmod +x dist/cli.js && yarn lint && yarn test",
+    "prepack": "yarn build",
     "lint:eslint": "eslint . --cache --ext js,ts",
-    "lint:misc": "prettier '**/*.json' '**/*.md' '!CHANGELOG.md' '**/*.yml' --ignore-path .gitignore",
+    "lint:misc": "prettier '**/*.json' '**/*.md' '!CHANGELOG.md' '**/*.yml' '!.yarnrc.yml' --ignore-path .gitignore",
     "lint": "yarn lint:eslint && yarn lint:misc --check",
     "lint:fix": "yarn lint:eslint --fix && yarn lint:misc --write",
     "build:clean": "rimraf dist && yarn build",
@@ -39,7 +37,7 @@
     "yargs": "^17.0.1"
   },
   "devDependencies": {
-    "@lavamoat/allow-scripts": "^1.0.6",
+    "@lavamoat/allow-scripts": "^2.1.0",
     "@metamask/eslint-config": "^10.0.0",
     "@metamask/eslint-config-jest": "^10.0.0",
     "@metamask/eslint-config-nodejs": "^10.0.0",
@@ -69,5 +67,6 @@
     "allowScripts": {
       "@lavamoat/preinstall-always-fail": false
     }
-  }
+  },
+  "packageManager": "yarn@3.2.4"
 }