use yarn install immutable

Author: bramkragten

.github/workflows/ci.yml

@@ -19,5 +19,5 @@ jobs:
         uses: actions/[email protected]
         with:
           node-version-file: ".nvmrc"
-      - run: npm install
-      - run: npm test
+      - run: yarn install --immutable
+      - run: yarn test

.github/workflows/npmpublish.yml

@@ -15,8 +15,8 @@ jobs:
       - uses: actions/[email protected]
         with:
           node-version-file: ".nvmrc"
-      - run: npm install
-      - run: npm test
+      - run: yarn install --immutable
+      - run: yarn test
 
   publish-npm:
     needs: build
@@ -27,7 +27,7 @@ jobs:
         with:
           node-version: 18
           registry-url: https://registry.npmjs.org/
-      - run: npm install
+      - run: yarn install --immutable
       - run: npm publish
         env:
           NODE_AUTH_TOKEN: ${{secrets.npm_token}}

package.json

@@ -27,7 +27,7 @@
     "build": "tsc && rollup -c",
     "test": "tsc && prettier --check . && mocha --loader=ts-node/esm",
     "format": "prettier --write .",
-    "prepublishOnly": "rm -rf dist && yarn build && npm test"
+    "prepublishOnly": "rm -rf dist && yarn build && yarn test"
   },
   "author": "Paulus Schoutsen <[email protected]>",
   "license": "Apache-2.0",