diff --git a/shared/bundle_analysis/db_migrations.py b/shared/bundle_analysis/db_migrations.py
index 72018a84..eecfd1dc 100644
--- a/shared/bundle_analysis/db_migrations.py
+++ b/shared/bundle_analysis/db_migrations.py
@@ -1,3 +1,6 @@
+from collections.abc import Callable
+
+import sentry_sdk
 from sqlalchemy import text
 from sqlalchemy.orm import Session
 
@@ -26,7 +29,7 @@ def __init__(self, db_session: Session, from_version: int, to_version: int):
 
         # Mapping of the schema_version number to the migration function that needs to run
         # {x: fcn} means to bring version x-1 to x, fcn must be ran
-        self.migrations = {
+        self.migrations: dict[int, Callable[[Session], None]] = {
             2: add_gzip_size,
             3: add_is_cached,
             4: modify_gzip_size_nullable,
@@ -38,6 +41,7 @@ def update_schema_version(self, version):
         """
         self.db_session.execute(text(stmt))
 
+    @sentry_sdk.trace
     def migrate(self):
         for version in range(self.from_version + 1, self.to_version + 1):
             self.migrations[version](self.db_session)
diff --git a/shared/bundle_analysis/parser.py b/shared/bundle_analysis/parser.py
index b00b58b0..53bbbead 100644
--- a/shared/bundle_analysis/parser.py
+++ b/shared/bundle_analysis/parser.py
@@ -4,11 +4,12 @@
 from sqlalchemy.orm import Session as DbSession
 
 from shared.bundle_analysis.parsers import ParserInterface, ParserV1, ParserV2
+from shared.bundle_analysis.parsers.base import ParserTrait
 
 log = logging.getLogger(__name__)
 
 
-PARSER_VERSION_MAPPING = {
+PARSER_VERSION_MAPPING: dict[str, type[ParserTrait]] = {
     "1": ParserV1,
     "2": ParserV2,
 }
@@ -23,7 +24,7 @@ def __init__(self, path: str, db_session: DbSession):
         self.path = path
         self.db_session = db_session
 
-    def get_proper_parser(self) -> object:
+    def get_proper_parser(self) -> ParserTrait:
         error = None
         try:
             with open(self.path, "rb") as f:
@@ -33,11 +34,13 @@ def get_proper_parser(self) -> object:
                         selected_parser = PARSER_VERSION_MAPPING.get(value)
                         if selected_parser is None:
                             error = f"parser not implemented for version {value}"
-                        if not issubclass(selected_parser, ParserInterface):
+                        elif not issubclass(selected_parser, ParserInterface):
                             error = "invalid parser implementation"
-                        return selected_parser(self.db_session)
+                        else:
+                            return selected_parser(self.db_session)
             error = "version does not exist in bundle file"
         except IOError:
             error = "unable to open file"
         if error:
             raise Exception(f"Couldn't parse bundle: {error}")
+        raise Exception("Couldn't parse bundle: unknown error")
diff --git a/shared/bundle_analysis/parsers/base.py b/shared/bundle_analysis/parsers/base.py
index 754de833..13f31bfc 100644
--- a/shared/bundle_analysis/parsers/base.py
+++ b/shared/bundle_analysis/parsers/base.py
@@ -1,7 +1,20 @@
 import abc
+from typing import Tuple
+
+from sqlalchemy.orm import Session
 
 
 class ParserInterface(metaclass=abc.ABCMeta):
     @classmethod
     def __subclasshook__(cls, subclass):
         return hasattr(subclass, "parse") and callable(subclass.parse)
+
+
+class ParserTrait:
+    @abc.abstractmethod
+    def __init__(self, db_session: Session):
+        pass
+
+    @abc.abstractmethod
+    def parse(self, path: str) -> Tuple[int, str]:
+        pass
diff --git a/shared/bundle_analysis/parsers/v1.py b/shared/bundle_analysis/parsers/v1.py
index 56e9e9f3..f99f5bbe 100644
--- a/shared/bundle_analysis/parsers/v1.py
+++ b/shared/bundle_analysis/parsers/v1.py
@@ -18,6 +18,7 @@
     assets_chunks,
     chunks_modules,
 )
+from shared.bundle_analysis.parsers.base import ParserTrait
 from shared.bundle_analysis.utils import get_extension
 
 log = logging.getLogger(__name__)
@@ -57,7 +58,7 @@
 """
 
 
-class ParserV1:
+class ParserV1(ParserTrait):
     """
     This does a streaming JSON parse of the stats JSON file referenced by `path`.
     It's more complicated that just doing a `json.loads` but should keep our memory
diff --git a/shared/bundle_analysis/parsers/v2.py b/shared/bundle_analysis/parsers/v2.py
index affd896f..8d457b2e 100644
--- a/shared/bundle_analysis/parsers/v2.py
+++ b/shared/bundle_analysis/parsers/v2.py
@@ -18,6 +18,7 @@
     assets_chunks,
     chunks_modules,
 )
+from shared.bundle_analysis.parsers.base import ParserTrait
 from shared.bundle_analysis.utils import get_extension
 
 log = logging.getLogger(__name__)
@@ -58,7 +59,7 @@
 """
 
 
-class ParserV2:
+class ParserV2(ParserTrait):
     """
     This does a streaming JSON parse of the stats JSON file referenced by `path`.
     It's more complicated that just doing a `json.loads` but should keep our memory
diff --git a/shared/bundle_analysis/report.py b/shared/bundle_analysis/report.py
index 5f87194e..7eeb24e9 100644
--- a/shared/bundle_analysis/report.py
+++ b/shared/bundle_analysis/report.py
@@ -136,7 +136,7 @@ def asset_reports(
         asset_types: Optional[List[AssetType]] = None,
         chunk_entry: Optional[bool] = None,
         chunk_initial: Optional[bool] = None,
-        ordering_column: Optional[str] = "size",
+        ordering_column: str = "size",
         ordering_desc: Optional[bool] = True,
     ) -> Iterator[AssetReport]:
         with get_db_session(self.db_path) as session:
@@ -185,7 +185,7 @@ def total_gzip_size(
         """
         Returns the sum of all assets' gzip_size if present plus
         the sum of all assets' size if they do not have gzip_size value.
-        This simulates the amount of data transfer in a realisitic setting,
+        This simulates the amount of data transfer in a realistic setting,
         for those assets that are not compressible we will use its uncompressed size.
         """
         with get_db_session(self.db_path) as session:
@@ -225,14 +225,18 @@ class BundleAnalysisReport:
     Report wrapper around multiple bundles for a single commit report.
     """
 
-    def __init__(self, db_path: Optional[str] = None):
-        self.db_path = db_path
-        if self.db_path is None:
+    db_path: str
+
+    def __init__(self, db_path: str | None = None):
+        if db_path is None:
             _, self.db_path = tempfile.mkstemp(prefix="bundle_analysis_")
+        else:
+            self.db_path = db_path
         with get_db_session(self.db_path) as db_session:
             self._setup(db_session)
 
-    def _setup(self, db_session: DbSession):
+    @sentry_sdk.trace
+    def _setup(self, db_session: DbSession) -> None:
         """
         Creates the schema for a new bundle report database.
         """
@@ -295,7 +299,7 @@ def ingest(self, path: str, compare_sha: Optional[str] = None) -> Tuple[int, str
                 session.commit()
                 rows_deleted = result.rowcount
                 if rows_deleted > 0:
-                    log.warn(
+                    log.warning(
                         f"Integrity error detected, deleted {rows_deleted} corrupted rows from {params[0]}"
                     )
 
@@ -452,6 +456,7 @@ def is_cached(self) -> bool:
             cached_bundles = session.query(Bundle).filter_by(is_cached=True)
             return cached_bundles.count() > 0
 
+    @sentry_sdk.trace
     def delete_bundle_by_name(self, bundle_name: str) -> None:
         with get_db_session(self.db_path) as session:
             bundle_to_be_deleted = (