fix: prevent the builds from failing for public projects that use yar…

…n 2 or above with workspaces

run-build-functions.sh

@@ -89,17 +89,21 @@ install_deps() {
 restore_node_modules() {
   local workspace_output
   local workspace_exit_code
+  local workspace_errors_logfile
+  local workspace_error_message
+  local package_manager_version
+  local package_locations
   local installer=$1
   # YARN_IGNORE_PATH will ignore the presence of a local yarn executable (i.e. yarn 2) and default
   # to using the global one (which, for now, is always yarn 1.x). See https://yarnpkg.com/configuration/yarnrc#ignorePath
   # we can actually use this command for npm workspaces as well
-  workspace_output="$(YARN_IGNORE_PATH=1 yarn workspaces --json info 2>/dev/null)"
+  workspace_errors_logfile="yarn-workspace-errors-log.json"
+  workspace_output="$(YARN_IGNORE_PATH=1 yarn workspaces --json info 2>"$workspace_errors_logfile")"
   workspace_exit_code=$?
+
   if [ $workspace_exit_code -eq 0 ]
   then
-    echo "$installer workspaces detected"
-    local package_locations
-    # Extract all the packages and respective locations. .data will be a JSON object like
+    # .data will be a JSON object like
     # {
     #   "my-package-1": {
     #     "location": "packages/blog-1",
@@ -109,7 +113,42 @@ restore_node_modules() {
     #   (...)
     # }
     # We need to cache all the node_module dirs, or we'll always be installing them on each run
-    mapfile -t package_locations <<< "$(echo "$workspace_output" | jq -r '.data | fromjson | to_entries | .[].value.location')"
+    mapfile -t package_locations <<<"$(echo "$workspace_output" | jq -r '.data | fromjson | to_entries | .[].value.location')"
+  else
+    # In yarn 1.x workspaces only work on private repos.
+    # See https://classic.yarnpkg.com/lang/en/docs/workspaces/#toc-how-to-use-it
+    # we have to check the error message to see if the repo is public and uses
+    # yarn 2 (or greater) with workspaces
+    if [ $workspace_exit_code -eq 1 ]
+    then
+      workspace_error_message=$(jq -r ".data" "$workspace_errors_logfile" 2>/dev/null)
+      package_manager_version=$(yarn --version)
+      if [ "${package_manager_version:0:1}" -gt 1 ] && [ "$workspace_error_message" = "Workspaces can only be enabled in private projects." ]
+      then
+        # From yarn 2 there's no way to output information about repo's workspaces
+        # in pure json. Here's how the output of `yarn workspaces list --json` looks like
+        # (stringified json objects separated with new lines):
+        #
+        # ```
+        # {"location":".","name":"the-monorepo"}
+        # {"location":"packages/blog-1","name":"dev blog"}
+        # {"location":"packages/blog-2","name":"personal blog"}
+        # ```
+        workspace_output=[$(paste -s -d ',' <(yarn workspaces list --json 2>/dev/null))]
+        workspace_exit_code=$?
+
+        if [ $workspace_exit_code -eq 0 ]
+        then
+          mapfile -t package_locations <<<"$(jq -r '.[].location | select(. != ".")' <<<"$workspace_output")"
+        fi
+      fi
+    fi
+  fi
+
+  if [ ${#package_locations[@]} -ne 0 ]
+  then
+    echo "$installer workspaces detected"
+    # Extract all the packages and respective locations.
     restore_js_workspaces_cache "${package_locations[@]}"
   else
     echo "No $installer workspaces detected"