diff --git a/src/plugins/analysis/linter/code/source_code_analysis.py b/src/plugins/analysis/linter/code/source_code_analysis.py
index 6b328f960..cb9b002ee 100644
--- a/src/plugins/analysis/linter/code/source_code_analysis.py
+++ b/src/plugins/analysis/linter/code/source_code_analysis.py
@@ -7,6 +7,7 @@
 import pydantic
 from docker.types import Mount
 from pydantic import Field
+from semver import Version
 
 from analysis.plugin import AnalysisPluginV0
 from helperFunctions.docker import run_docker_container
@@ -35,7 +36,7 @@ class Schema(pydantic.BaseModel):
         class Issue(pydantic.BaseModel):
             """A linting issue."""
 
-            symbol: str = Field(
+            symbol: Optional[str] = Field(
                 description=(
                     "An identifier for the linting type. E.g. 'unused-import' (pylint).\n"
                     'Note that this field is linter specific.'
@@ -65,9 +66,9 @@ def __init__(self):
             metadata=AnalysisPluginV0.MetaData(
                 name='source_code_analysis',
                 description='This plugin implements static code analysis for multiple scripting languages',
-                version='0.7.1',
+                version=Version(0, 7, 3),
                 Schema=AnalysisPlugin.Schema,
-                mime_whitelist=['text/'],
+                mime_whitelist=['text/', 'application/javascript'],
             ),
         )
 
diff --git a/src/plugins/analysis/linter/internal/linters.py b/src/plugins/analysis/linter/internal/linters.py
index ca8277604..b660179bd 100644
--- a/src/plugins/analysis/linter/internal/linters.py
+++ b/src/plugins/analysis/linter/internal/linters.py
@@ -27,10 +27,15 @@ def run_eslint(file_path):
     output_json = json.loads(result.stdout)
 
     issues = []
-    # As we only ever analyse one file use output_json[0]
+    # As we only ever analyze one file use output_json[0]
     for msg in output_json[0]['messages']:
         issues.append(
-            {'line': msg['line'], 'column': msg['column'], 'message': msg['message'], 'symbol': msg['ruleId']}
+            {
+                'line': msg['line'],
+                'column': msg['column'],
+                'message': msg['message'],
+                'symbol': msg['ruleId'] or 'N/A',  # ruleId can be None if there is a syntax error
+            }
         )
 
     return issues