1 files changed, 53 insertions, 0 deletions
diff --git a/python/wpt/exporter/common.py b/python/wpt/exporter/common.py
new file mode 100644
index 00000000000..307edce0276
--- /dev/null
+++ b/python/wpt/exporter/common.py
@@ -0,0 +1,53 @@
+# Copyright 2023 The Servo Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+# pylint: disable=missing-docstring
+
+UPSTREAMABLE_PATH = "tests/wpt/web-platform-tests/"
+NO_SYNC_SIGNAL = "[no-wpt-sync]"
+
+OPENED_NEW_UPSTREAM_PR = (
+    "🤖 Opened new upstream WPT pull request ({upstream_pr}) "
+    "with upstreamable changes."
+)
+UPDATED_EXISTING_UPSTREAM_PR = (
+    "📝 Transplanted new upstreamable changes to existing "
+    "upstream WPT pull request ({upstream_pr})."
+)
+UPDATED_TITLE_IN_EXISTING_UPSTREAM_PR = (
+    "✍ Updated existing upstream WPT pull request ({upstream_pr}) title and body."
+)
+CLOSING_EXISTING_UPSTREAM_PR = (
+    "🤖 This change no longer contains upstreamable changes to WPT; closed existing "
+    "upstream pull request ({upstream_pr})."
+)
+NO_UPSTREAMBLE_CHANGES_COMMENT = (
+    "👋 Downstream pull request ({servo_pr}) no longer contains any upstreamable "
+    "changes. Closing pull request without merging."
+)
+COULD_NOT_APPLY_CHANGES_DOWNSTREAM_COMMENT = (
+    "🛠 These changes could not be applied onto the latest upstream WPT. "
+    "Servo's copy of the Web Platform Tests may be out of sync."
+)
+COULD_NOT_APPLY_CHANGES_UPSTREAM_COMMENT = (
+    "🛠 Changes from the source pull request ({servo_pr}) can no longer be "
+    "cleanly applied. Waiting for a new version of these changes downstream."
+)
+COULD_NOT_MERGE_CHANGES_DOWNSTREAM_COMMENT = (
+    "⛔ Failed to properly merge the upstream pull request ({upstream_pr}). "
+    "Please address any CI issues and try to merge manually."
+)
+COULD_NOT_MERGE_CHANGES_UPSTREAM_COMMENT = (
+    "⛔ The downstream PR has merged ({servo_pr}), but these changes could not "
+    "be merged properly. Please address any CI issues and try to merge manually."
+)
+
+
+def wpt_branch_name_from_servo_pr_number(servo_pr_number):
+    return f"servo_export_{servo_pr_number}"