accumulate errors and check for api token

action.yaml

@@ -41,6 +41,8 @@ inputs:
 
 runs:
   using: composite
+  env:
+    API_TOKEN: ${{ inputs.trunk-token }}
   steps:
     - name: Detect changed paths
       id: detect-changed-paths
@@ -92,7 +94,6 @@ runs:
       shell: bash
       env:
         ACTOR: ${{ github.actor }}
-        API_TOKEN: ${{ inputs.trunk-token }}
         REPOSITORY: ${{ github.repository }}
         TARGET_BRANCH: ${{ steps.prerequisites.outputs.merge_instance_branch }}
         PR_NUMBER: ${{ github.event.pull_request.number }}

src/scripts/prerequisites.sh

@@ -10,6 +10,13 @@ fetchRemoteGitHistory() {
 	git fetch --quiet --depth=2147483647 origin "$@"
 }
 
+any_error_occurred=false
+
+if [[ -z ${API_TOKEN} ]]; then
+	echo "You must specify a `trunk-token` for trunk-io/merge-action to use"
+	any_error_occurred=true
+fi
+
 # trunk-ignore(shellcheck)
 pr_branch="${PR_BRANCH}"
 merge_instance_branch="${TARGET_BRANCH}"
@@ -19,7 +26,7 @@ fi
 
 if [[ -z ${merge_instance_branch} ]]; then
 	echo "Could not identify merge instance branch"
-	exit 2
+	any_error_occurred=true
 fi
 
 # trunk-ignore(shellcheck/SC2153): Passed in as env variable
@@ -62,3 +69,7 @@ echo "pr_branch_head_sha=${pr_branch_head_sha}" >>"${GITHUB_OUTPUT}"
 echo "impacts_all_detected=${impacts_all_detected}" >>"${GITHUB_OUTPUT}"
 echo "workspace_path=${workspace_path}" >>"${GITHUB_OUTPUT}"
 echo "requires_default_bazel_installation=${requires_default_bazel_installation}" >>"${GITHUB_OUTPUT}"
+
+if [[ "${any_error_occurred}" = true ]]; then
+  exit 2
+fi