Migrate from yarn to pnpm

Author: simnalamburt

.github/workflows/test.yml

@@ -8,9 +8,10 @@ jobs:
         node: ['latest', 'lts/*', 'lts/-1']
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
-      - run: yarn
-      - run: yarn build
-      - run: yarn test
+      - uses: pnpm/action-setup@v4
+      - run: pnpm install
+      - run: pnpm build
+      - run: pnpm test

.gitignore

@@ -1,12 +1,4 @@
 /node_modules/
 
-# Yarn 2
-.yarn/*
-!.yarn/releases
-!.yarn/plugins
-!.yarn/sdks
-!.yarn/versions
-.pnp.*
-
 # microbundle
 /dist/

.prettierignore

@@ -1,7 +1,5 @@
-# Yarn 2
-.yarnrc.yml
-.yarn/
-.pnp.*
+# pnpm
+pnpm-lock.yaml
 
 # Markdowns
 *.md

.yarn/releases/yarn-4.5.0.cjs

@@ -8,8 +8,7 @@ General purpose IRC client for nodejs. See **[documentation]** for the details.
 - **[DEBUG]** support for easy debugging
 
 ```bash
-npm install --save slate-irc-parser
-yarn add -D slate-irc-parser
+pnpm add -D slate-irc-parser
 ```
 ```js
 import irc from 'slate-irc'

.yarnrc.yml

@@ -40,6 +40,5 @@
   "prettier": {
     "semi": false,
     "singleQuote": true
-  },
-  "packageManager": "yarn@4.5.0"
+  }
 }