Add an initial pass at a workflow for priming caches.

.github/workflows/create-block.yml

@@ -1,10 +1,15 @@
 name: Create Block
 
 on:
-    pull_request:
-    push:
-        branches: [trunk, wp/trunk]
-
+  workflow_run:
+    workflows: [ "Prime Caches" ]
+    types:
+      - completed
+#
+#    pull_request:
+#    push:
+#        branches: [trunk, wp/trunk]
+#
 # Cancels all previous workflow runs for pull requests that have not completed.
 concurrency:
     # The concurrency group contains the workflow name and the branch name for pull requests

.github/workflows/end2end-test.yml

@@ -1,12 +1,18 @@
 name: End-to-End Tests
 
 on:
-    pull_request:
-    push:
-        branches:
-            - trunk
-            - 'release/**'
-            - 'wp/**'
+  workflow_run:
+    workflows:
+      - Prime Caches
+    types:
+      - completed
+
+#    pull_request:
+#    push:
+#        branches:
+#            - trunk
+#            - 'release/**'
+#            - 'wp/**'
 
 # Cancels all previous workflow runs for pull requests that have not completed.
 concurrency:

.github/workflows/performance.yml

@@ -1,9 +1,14 @@
 name: Performances Tests
 
 on:
-    pull_request:
-    release:
-        types: [published]
+  workflow_run:
+    workflows: [ "Prime Caches" ]
+    types:
+      - completed
+#
+#    pull_request:
+#    release:
+#        types: [published]
 
 # Cancels all previous workflow runs for pull requests that have not completed.
 concurrency:

.github/workflows/prime-caches.yml

@@ -0,0 +1,54 @@
+##
+# This workflow primes the NPM caches in order to speed up other workflows.
+##
+name: Prime Caches
+
+on:
+  pull_request:
+  push:
+    branches:
+      - trunk
+      - 'release/**'
+      - 'wp/**'
+
+# Cancels all previous workflow runs for pull requests that have not completed.
+concurrency:
+    # The concurrency group contains the workflow name and the branch name for pull requests
+    # or the commit hash for any other events.
+    group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.head_ref || github.sha }}
+    cancel-in-progress: true
+
+jobs:
+    prime-npm-cache:
+        name: NodeJS ${{ matrix.node }} on ${{ matrix.os }}
+        runs-on: ${{ matrix.os }}
+        strategy:
+            fail-fast: false
+            matrix:
+                os: ['ubuntu-latest']
+                node: ['14', '12']
+
+                include:
+                    - os: 'macos-latest'
+                      node: '14'
+
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
+
+            - name: Use desired version of NodeJS
+              uses: actions/setup-node@46071b5c7a2e0c34e49c3cb8a0e792e86e18d5ea # v2.1.5
+              with:
+                  node-version: ${{ matrix.node }}
+
+            - name: Cache NPM packages
+              uses: actions/cache@26968a09c0ea4f3e233fdddbafd1166051a095f6 # v2.1.4
+              id: npm-cache
+              with:
+                  # npm cache files are stored in `~/.npm` on Linux/macOS
+                  path: ~/.npm
+                  key: ${{ runner.os }}-node-${{ matrix.node }}-npm-cache-${{ hashFiles('**/package-lock.json') }}
+
+            - name: Prime cache
+              if: steps.npm-cache.outputs.cache-hit != 'true'
+              run: npm ci

.github/workflows/rnmobile-android-runner.yml

@@ -1,9 +1,14 @@
 name: React Native E2E Tests (Android)
 
 on:
-    pull_request:
-    push:
-        branches: [trunk]
+  workflow_run:
+    workflows: [ "Prime Caches" ]
+    types:
+      - completed
+
+#    pull_request:
+#    push:
+#        branches: [trunk]
 
 # Cancels all previous workflow runs for pull requests that have not completed.
 concurrency:

.github/workflows/rnmobile-ios-runner.yml

@@ -1,9 +1,14 @@
 name: React Native E2E Tests (iOS)
 
 on:
-    pull_request:
-    push:
-        branches: [trunk]
+    workflow_run:
+      workflows: [ "Prime Caches" ]
+      types:
+        - completed
+
+#    pull_request:
+#    push:
+#        branches: [trunk]
 
 # Cancels all previous workflow runs for pull requests that have not completed.
 concurrency:

.github/workflows/static-checks.yml

@@ -1,12 +1,17 @@
 name: Static Analysis (Linting, License, Type checks...)
 
 on:
-    pull_request:
-    push:
-        branches:
-            - trunk
-            - 'release/**'
-            - 'wp/**'
+    workflow_run:
+        workflows: [ "Prime Caches" ]
+        types:
+          - completed
+
+#    pull_request:
+#    push:
+#        branches:
+#            - trunk
+#            - 'release/**'
+#            - 'wp/**'
 
 # Cancels all previous workflow runs for pull requests that have not completed.
 concurrency:

.github/workflows/unit-test.yml

@@ -3,12 +3,17 @@ name: Unit Tests
 # Since Unit Tests are required to pass for each PR,
 # we cannot disable them for documentation-only changes.
 on:
-    pull_request:
-    push:
-        branches:
-            - trunk
-            - 'release/**'
-            - 'wp/**'
+    workflow_run:
+        workflows: [ "Prime Caches" ]
+        types:
+          - completed
+
+#    pull_request:
+#    push:
+#        branches:
+#            - trunk
+#            - 'release/**'
+#            - 'wp/**'
 
 # Cancels all previous workflow runs for pull requests that have not completed.
 concurrency: