chore: use corepack and yarn v4

.devcontainer/Dockerfile

@@ -1 +1,3 @@
-FROM mcr.microsoft.com/vscode/devcontainers/javascript-node:0-20
+FROM mcr.microsoft.com/devcontainers/javascript-node:20
+
+RUN corepack enable

.devcontainer/devcontainer.json

@@ -3,7 +3,11 @@
   "build": {
     "dockerfile": "Dockerfile"
   },
-  "extensions": ["esbenp.prettier-vscode", "dbaeumer.vscode-eslint"],
-  "postCreateCommand": "yarn install",
+  "customizations": {
+    "vscode": {
+      "extensions": ["esbenp.prettier-vscode", "dbaeumer.vscode-eslint"]
+    }
+  },
+  "onCreateCommand": "yarn install",
   "remoteUser": "node"
 }

.github/dependabot.yml

@@ -15,4 +15,4 @@ updates:
   - package-ecosystem: github-actions
     directory: '/'
     schedule:
-      interval: monthly
+      interval: weekly

.github/workflows/build.yml

@@ -5,11 +5,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      # waiting on: https://github.com/actions/setup-node/issues/531
+      - run: corepack enable
       - uses: actions/setup-node@v4
         with:
           node-version: 20
           cache: yarn
-      - run: yarn install --frozen-lockfile
+      - run: yarn install --immutable
       - run: yarn format:check
       - run: yarn lint
   build:

.gitignore

@@ -59,8 +59,14 @@ typings/
 # Output of 'npm pack'
 *.tgz
 
-# Yarn Integrity file
-.yarn-integrity
+# Yarn
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions
 
 # dotenv environment variables file
 .env
@@ -88,4 +94,4 @@ typings/
 .dynamodb/
 
 # Output directory
-build
+build

.yarnrc.yml

@@ -0,0 +1 @@
+nodeLinker: node-modules

Dockerfile

@@ -5,10 +5,8 @@ WORKDIR /usr/src/app
 ADD package.json .
 ADD yarn.lock .
 
-# All the steps until here can be re-used in the second stage,
-# so the devDependencies are installed separately
-RUN yarn install --frozen-lockfile --production
-RUN yarn install --frozen-lockfile
+RUN corepack enable
+RUN yarn install --immutable
 
 ADD tsconfig.json .
 ADD src/ ./src/
@@ -22,7 +20,8 @@ WORKDIR /usr/src/app
 ADD package.json .
 ADD yarn.lock .
 
-RUN yarn install --frozen-lockfile --production
+RUN corepack enable
+RUN yarn install --immutable
 
 COPY --from=builder /usr/src/app/build/ ./build/
 

lefthook.yml

@@ -0,0 +1,15 @@
+pre-commit:
+  parallel: true
+  skip:
+    - merge
+    - rebase
+  commands:
+    eslint_prettier:
+      glob: '*.{js,ts,jsx,tsx,cjs,cts,mjs,mts}'
+      run: node_modules/.bin/eslint --fix {staged_files} && node_modules/.bin/prettier --write {staged_files}
+      stage_fixed: true
+
+    prettier:
+      glob: '*.{html,json,yaml,yml}'
+      run: node_modules/.bin/prettier --write {staged_files}
+      stage_fixed: true

package.json

@@ -5,6 +5,7 @@
   "main": "build/index.js",
   "author": "",
   "license": "",
+  "packageManager": "[email protected]+sha256.825003a0f561ad09a3b1ac4a3b3ea6207af2796d54f62a9420520915721f5186",
   "scripts": {
     "dev": "ts-node-dev src/index.ts",
     "start": "NODE_ENV=production node build/index.js",
@@ -18,6 +19,7 @@
     "@nihalgonsalves/esconfig": "^0.6.9",
     "@types/node": "20",
     "eslint": "^8.54.0",
+    "lefthook": "^1.5.4",
     "prettier": "^3.1.0",
     "ts-node-dev": "^2.0.0",
     "typescript": "^5.2.2"