feat(frontend): scrollbar annotations

1 files changed, 20 insertions, 0 deletions

diff --git a/subprojects/frontend/src/editor/DiagnosticValue.ts b/subprojects/frontend/src/editor/DiagnosticValue.ts
new file mode 100644
index 00000000..ad23c467
--- /dev/null
+++ b/subprojects/frontend/src/editor/DiagnosticValue.ts
@@ -0,0 +1,20 @@
+import type { Diagnostic } from '@codemirror/lint';
+import { RangeValue } from '@codemirror/state';
+
+export default class DiagnosticValue extends RangeValue {
+  static VALUES: Record<Diagnostic['severity'], DiagnosticValue> = {
+    error: new DiagnosticValue('error'),
+    warning: new DiagnosticValue('warning'),
+    info: new DiagnosticValue('info'),
+  };
+
+  private constructor(public readonly severity: Diagnostic['severity']) {
+    super();
+  }
+
+  override point = true;
+
+  override eq(other: RangeValue): boolean {
+    return other instanceof DiagnosticValue && other.severity === this.severity;
+  }
+}