chore: migrate from yarn to npm

Author: christopherthielen

.github/workflows/ci.yml

@@ -6,23 +6,26 @@ on:
       - master
   pull_request:
 
+env:
+  NODE_OPTIONS: --openssl-legacy-provider
+
 jobs:
   ci:
     needs: [test, downstream]
     runs-on: ubuntu-latest
     steps:
       - run: true
   test:
-    name: yarn test
+    name: npm test
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - name: Install Dependencies
-        run: yarn install --pure-lockfile
+        run: npm ci
       - name: Check Peer Dependencies
         run: npx check-peer-dependencies
       - name: Run Tests
-        run: yarn test
+        run: npm test
 
   downstream:
     name: Test downstream ${{ matrix.group }} projects
@@ -34,10 +37,9 @@ jobs:
       - uses: actions/checkout@v2
       - name: Prepare to Test Downstream Projects
         run: |
-          npm config set scripts-prepend-node-path auto
           git config --global user.email uirouter@github.actions
           git config --global user.name uirouter_github_actions
       - name: Install Dependencies
-        run: yarn install --pure-lockfile
+        run: npm ci
       - name: Test Downstream Projects
-        run: yarn test:downstream --group ${{ matrix.group }}
+        run: npm run test:downstream -- --group ${{ matrix.group }}

examples/create-react-app/README.md

@@ -5,6 +5,6 @@ Example showing sticky states installed in a create-react-app app.
 ## Running
 
 ```
-yarn install
-yarn start
+npm install
+npm start
 ```