build(ci): adds depcheck

.depcheckrc

@@ -0,0 +1,9 @@
+# depcheck configuration
+# SEE https://www.npmjs.com/package/depcheck#api
+
+# if you add ignores also annotate why the package is ignored
+# keep list ordered at all times
+ignores:
+  - "@commitlint/cli"
+  - "@commitlint/config-angular"
+  - "@istanbuljs/nyc-config-typescript"

.github/actions/setup/action.yml

@@ -0,0 +1,24 @@
+name: setup
+description: 'basic setup project with npm ci'
+
+runs:
+  using: "composite"
+  steps:
+    - name: setup nodejs
+      uses: actions/setup-node@v3
+      with:
+        node-version-file: '.nvmrc'
+        check-latest: true
+        cache: npm
+    - name: cache dependencies
+      id: cache
+      uses: actions/cache@v3
+      with:
+        path: ./node_modules
+        key: node-modules-${{ runner.name }}-${{ runner.arch}}-${{ hashFiles('package-lock.json') }}
+    - name: install dependencies
+      run: npm ci --no-audit
+      # only run npm ci when restoring the cache didn’t work to save some time
+      # as npm ci would remove the node_modules again
+      if: steps.cache.outputs.cache-hit != 'true'
+      shell: bash

.github/workflows/depcheck.yml

@@ -0,0 +1,30 @@
+# SEE https://docs.github.com/en/actions/learn-github-actions/workflow-syntax-for-github-actions
+
+# Runs `npx depcheck`
+#
+# Depcheck is a tool for analyzing the dependencies in a project to see: how
+# each dependency is used, which dependencies are useless, and which
+# dependencies are missing from package.json.
+#
+# https://www.npmjs.com/package/depcheck
+
+name: depcheck
+
+on:
+  # allow manual trigger workflow
+  pull_request:
+    branches:
+      - main
+    paths:
+      # run only when one of the files matching the glob patterns changed
+      - 'package.json'
+      - 'package-lock.json'
+
+jobs:
+
+  depcheck:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ./.github/actions/setup
+      - run: npx depcheck

.github/workflows/test.yml

@@ -7,9 +7,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - uses: actions/setup-node@v3
-      with:
-        node-version-file: '.nvmrc'
-        cache: 'npm'
-    - run: npm ci --no-optional
+    - uses: ./.github/actions/setup
     - run: npm test

.husky/pre-commit

@@ -16,7 +16,7 @@ fi
 . "$(dirname "$0")/_/husky.sh"
 
 printf "%b>>>%b lint...\n" "$GREEN" "$NO_COLOR"
-npm run lint:fix -s
+npm run -s lint:fix
 
 printf "%b>>>%b prettier...\n" "$GREEN" "$NO_COLOR"
-npm run format
+npm run -s format