chore(other): CHECKOUT-0 Add check to ensure SDK version is on CDN

Author: TomA-R

.circleci/config.yml

@@ -94,6 +94,14 @@ jobs:
       - store_artifacts:
           path: packages/test-framework/screenshots
 
+  sdk-on-cdn:
+    <<: *node_executor
+    steps:
+      - ci/pre-setup
+      - run:
+          name: "Check SDK version on CDN"
+          command: ./scripts/sdk-live-checker.sh
+
   release:
     <<: *node_executor
     steps:
@@ -167,6 +175,9 @@ workflows:
       - e2e:
           filters:
             <<: *pull_request_filter
+      - sdk-on-cdn:
+          filters:
+            <<: *pull_request_filter
       - ci/validate-commits:
           filters:
             <<: *pull_request_filter

scripts/sdk-live-checker.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+npm ci
+
+# Make sure current version of @bigcommerce/checkout-sdk exists on the CDN
+CURRENT_VERSION=`npm list --depth=0 | grep checkout-sdk | sed -E 's/.*@//'`
+HTTP_STATUS=`curl -s -o /dev/null -I -w "%{http_code}" https://checkout-sdk.bigcommerce.com/v1/loader-v${CURRENT_VERSION}.js`
+if [[ $HTTP_STATUS == "200" ]]; then
+  # Status 200, return OK
+  exit 0
+else
+  # Status not 200, return error
+  exit 1
+fi