Remove yarn, switch to npm

Co-authored-by: marocchino <128431+marocchino@users.noreply.github.com>

.github/workflows/test.yml

@@ -12,14 +12,14 @@ jobs:
       pull-requests: write
     steps:
       - uses: actions/checkout@v6
-      - run: yarn install
+      - run: npm ci
       - run: |
           set -o pipefail
           mkdir -p ./pr
           EOF=$(dd if=/dev/urandom bs=15 count=1 status=none | base64)
           echo "all_result<<$EOF" >> "$GITHUB_ENV"
-          yarn all >> "$GITHUB_ENV" 2>&1 || true  # proceed even if yarn fails
+          npm run all >> "$GITHUB_ENV" 2>&1 || true  # proceed even if npm run all fails
-          echo >> "$GITHUB_ENV"  # yarn all doesn't necessarily produce a newline
+          echo >> "$GITHUB_ENV"  # npm run all doesn't necessarily produce a newline
           echo "$EOF" >> "$GITHUB_ENV"
         id: all
       - uses: ./
@@ -28,7 +28,7 @@ jobs:
           header: All
           message: |
             <details open>
-            <summary>Output of yarn all</summary>
+            <summary>Output of npm run all</summary>
 
             ```shell
             ${{ env.all_result }}

.gitignore

@@ -2,11 +2,10 @@ __tests__/runner/*
 
 lib/*
 rollup.config.js
+# ^^^ compiled output of rollup.config.ts (generated by --configPlugin at build time)
 # comment out in distribution branches
 node_modules/
 
-package-lock.json
-
 # Rest pulled from https://github.com/github/gitignore/blob/master/Node.gitignore
 # Logs
 logs
@@ -68,8 +67,8 @@ typings/
 # Output of 'npm pack'
 *.tgz
 
-# Yarn Integrity file
+# Yarn lock file
-.yarn-integrity
+yarn.lock
 
 # dotenv environment variables file
 .env
@@ -97,5 +96,3 @@ typings/
 .dynamodb/
 
 .vscode/
-
-.yarn.lock

package.json

@@ -15,7 +15,7 @@
     "test:watch": "vitest",
     "coverage": "vitest run --coverage",
     "build_test": "tsc && vitest run",
-    "all": "yarn build && yarn format && yarn lint && yarn package && yarn test"
+    "all": "npm run build && npm run format && npm run lint && npm run package && npm run test"
   },
   "repository": {
     "type": "git",