update travis and github actions caching

.github/workflows/pr-preview.yml

@@ -35,7 +35,7 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-yarn-
       - name: Install npm dependencies
-        run: yarn install
+        run: yarn install --immutable
       - name: Build for Preview
         run: npm run build
         env:

.github/workflows/reset-staging-site.yml

@@ -4,7 +4,7 @@ name: Reset Staging Site
 on:
   # Run weekly on a Sunday at 02:00
   schedule:
-    - cron: '0 0 * * SUN'
+    - cron: "0 0 * * SUN"
   # Allow the script to be triggered directly from GitHub
   workflow_dispatch:
 jobs:
@@ -21,13 +21,20 @@ jobs:
         uses:
           google-github-actions/setup-gcloud@master
           # skipping setting a service account here as we'll load from json during script
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn config get cacheFolder)"
+        # Setup yarn 2 cache: https://github.com/actions/cache/blob/main/examples.md#node---yarn
       - name: Setup Cache
         uses: actions/cache@v2
+        id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
         with:
-          path: '**/node_modules'
-          key: ${{ runner.os }}-modules-${{ hashFiles('**/yarn.lock') }}
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
       - name: Install npm dependencies
-        run: yarn install
+        run: yarn install --immutable
       - name: Install global dependencies
         run: npm i -g firebase-tools ts-node
       - name: Populate service account json

.travis.yml

@@ -1,13 +1,12 @@
 language: node_js
 node_js:
-  - '12'
+  - "12"
 dist: xenial
 cache:
   # cache both yarn (.cache) and npm (for global installs)
   yarn: true
   directories:
-    - ~/.cache
-    - ~/.npm
+    - ./.yarn/cache
 addons:
   chrome: stable
   firefox: latest
@@ -25,7 +24,7 @@ env:
       - DEBUG=True
       - MOZ_HEADLESS=1
 install:
-  - yarn install --frozen-lockfile --silent
+  - yarn install --immutable
 # add the current github branch as an environment variable
 before_script:
   - echo "MATRIX=$MATRIX_VAR"