commit lockfile, add npm-merge-driver, use npm ci in ci

Author: developit

.github/workflows/main.yml

@@ -19,8 +19,8 @@ jobs:
           node-version: 12
       - name: npm install, build, and test
         run: |
-          npm install
-          npm run prepare --if-present
+          npm ci
+          npm run build --if-present
           npm test
         env:
           CI: true

.gitignore

@@ -1,4 +1,3 @@
 node_modules
-package-lock.json
 dist
 coverage