chore: wire dependencies in GitHub action

.github/workflows/CI.yml

@@ -28,6 +28,8 @@ jobs:
           ${{ runner.OS }}-
     - name: Install dependencies
       run: npm ci
+    - name: Wire dependencies
+      run: ./tasks/wiredeps_github
     - name: Build
       env:
         COVERAGE: 1

tasks/wiredeps_github

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+FEATURE_BRANCH=
+
+# https://docs.github.com/en/actions/reference/environment-variables#default-environment-variables
+
+# skip default branch and tags
+if [[ $GITHUB_REF =~ ^refs/heads/master$ ]] || [[ $GITHUB_REF =~ ^refs/tags/ ]]; then
+  exit 0;
+fi
+
+FEATURE_BRANCH=$(echo "$GITHUB_REF" | cut -d"/" -f3)
+
+echo "Attempting to install diagram-js@$FEATURE_BRANCH";
+
+npm install "diagram-js@bpmn-io/diagram-js#$FEATURE_BRANCH";
+
+if [ $? -ne 0 ]; then
+  echo "Falling back to diagram-js@develop";
+
+  npm install "diagram-js@bpmn-io/diagram-js#develop";
+fi