Remove yarn, use npm (#303)

Also: upgrade some GitHub Actions.

.github/workflows/build.yml

@@ -17,10 +17,10 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [19.x]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           lfs: true
       - name: Use Node.js ${{ matrix.node-version }}
@@ -29,29 +29,29 @@ jobs:
           node-version: ${{ matrix.node-version }}
       - name: Setup cache for npm
         id: npm_cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: |
             ~/.npm
             ~/cache
             !~/cache/exclude
             **/node_modules
-          key: yarn-${{ matrix.node-version }}-${{ hashFiles('**/yarn.lock') }}
-      - name: yarn install
+          key: npm-${{ matrix.node-version }}-${{ hashFiles('**/package-lock.json') }}
+      - name: npm install
         if: steps.npm_cache.outputs.cache-hit != 'true'
-        run: yarn install --frozen-lockfile
-      - run: yarn test
+        run: npm install-clean
+      - run: npm run test
 
   deploy_site:
     if: ${{ contains(github.ref, 'refs/tags') }}
     needs: build
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [19.x]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           lfs: true
       - name: Use Node.js ${{ matrix.node-version }}
@@ -60,17 +60,17 @@ jobs:
           node-version: ${{ matrix.node-version }}
       - name: Setup cache for npm
         id: npm_cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: |
             ~/.npm
             ~/cache
             !~/cache/exclude
             **/node_modules
-          key: yarn-${{ matrix.node-version }}-${{ hashFiles('**/yarn.lock') }}
-      - name: yarn install
+          key: npm-${{ matrix.node-version }}-${{ hashFiles('**/package-lock.json') }}
+      - name: npm install
         if: steps.npm_cache.outputs.cache-hit != 'true'
-        run: yarn install --frozen-lockfile
+        run: npm install-clean
       - run: ./scripts/dist
         env:
           SKIP_RELEASE_BUNLDE: true
@@ -89,32 +89,32 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [19.x]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           lfs: true
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node-version }}
       - name: Setup cache for npm
         id: npm_cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: |
             ~/.npm
             ~/cache
             !~/cache/exclude
             **/node_modules
-          key: yarn-${{ matrix.node-version }}-${{ hashFiles('**/yarn.lock') }}
-      - name: yarn install
+          key: npm-${{ matrix.node-version }}-${{ hashFiles('**/package-lock.json') }}
+      - name: npm install
         if: steps.npm_cache.outputs.cache-hit != 'true'
-        run: yarn install --frozen-lockfile
+        run: npm install --frozen-lockfile
       - run: ./scripts/dist
       - name: Publish to Node Packages
-        run: yarn publish
+        run: npm publish
         env:
           NPM_AUTH_TOKEN: ${{ secrets.NPM_AUTH_TOKEN }}
       - name: Get current tag name

README.md

@@ -10,21 +10,21 @@ We use git-lfs. So please install https://git-lfs.github.com/ before you clone t
 
 Install:
 
-    yarn install
+    npm install
 
 This starts a local development server complete with asset pipeline:
 
-    yarn start
+    npm start
 
 Export a static site to `./dist/site`
 
-    yarn run site
+    npm run site
 
 ### With Docker & Docker-Compose
 
     docker-compose up
 
-You need to prefix all maintenance commands from above like `yarn …` with
+You need to prefix all maintenance commands from above like `npm …` with
 
     docker-compose run --rm web …
 
@@ -36,7 +36,7 @@ See `.github/workflow/build.yml` for more info.
 
 ## Generate assets locally
 
-    yarn run compile
+    npm run compile
 
 After that, you'll find all the relevant assets in `./dist/`.
 
@@ -62,12 +62,12 @@ GitHub Actions deals with npm publishing.
 
 ### Patch level version (auto increment)
 
-    $ yarn release
+    $ npm release
 
 ### Minor
 
-    $ yarn release minor
+    $ npm release minor
 
 ### Major
 
-    $ yarn release major
+    $ npm release major