has_workspace_changed.sh

#!/bin/bash

WORKSPACE="${WORKSPACE:-@main/main}"

echo "Finding dependencies to watch under $WORKSPACE..."
watchedDependencies=$(yarn info "$WORKSPACE" --all --recursive --dependents --json | jq ".children.Dependencies[].locator, .value" | grep '@workspace' | sed 's/.*@workspace://' | sed 's/"$//' | xargs echo)
echo "Dependencies being watched: $watchedDependencies"
echo ""

echo "Finding dependencies that changed..."
changedDependencies=$(yarn workspaces list --json --since | jq ".location" | grep -v '\.' | xargs echo)
echo "Dependencies that changed: $changedDependencies"
echo ""

echo "Finding which watched deps have changed..."
has_changed=false
for changedLocation in $watchedDependencies; do
    for depLocation in $changedDependencies; do
      if [ "$changedLocation" == "$depLocation" ]; then
          echo "The dependency $changedLocation changed in this pull request"
          has_changed=true
      fi
    done
done
echo ""

if [[ -z "$GITHUB_ACTIONS" ]]; then
  echo "dependencies of $WORKSPACE changed: $has_changed"
else
  echo "::set-output name=has_changed::$has_changed"
fi