diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index 2a5fedace13..04fc89a37d0 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -7,7 +7,6 @@ import {
     arrayFrom,
     arrayIsEqualTo,
     AsExpression,
-    AssertClause,
     BuilderProgram,
     CancellationToken,
     canHaveDecorators,
@@ -918,7 +917,7 @@ export function getModeForUsageLocation(file: { impliedNodeFormat?: ResolutionMo
 }
 
 /** @internal */
-export function getResolutionModeOverride(node: AssertClause | ImportAttributes | undefined, grammarErrorOnNode?: (node: Node, diagnostic: DiagnosticMessage) => void) {
+export function getResolutionModeOverride(node: ImportAttributes | undefined, grammarErrorOnNode?: (node: Node, diagnostic: DiagnosticMessage) => void) {
     if (!node) return undefined;
     if (length(node.elements) !== 1) {
         grammarErrorOnNode?.(
diff --git a/src/services/outliningElementsCollector.ts b/src/services/outliningElementsCollector.ts
index 87ac0d10ba9..754541ed507 100644
--- a/src/services/outliningElementsCollector.ts
+++ b/src/services/outliningElementsCollector.ts
@@ -1,6 +1,5 @@
 import {
     ArrowFunction,
-    AssertClause,
     Block,
     CallExpression,
     CancellationToken,
@@ -302,11 +301,10 @@ function getOutliningSpanForNode(n: Node, sourceFile: SourceFile): OutliningSpan
         case SyntaxKind.NamedImports:
         case SyntaxKind.NamedExports:
         case SyntaxKind.ImportAttributes:
-        case SyntaxKind.AssertClause:
-            return spanForImportExportElements(n as NamedImports | NamedExports | AssertClause | ImportAttributes);
+            return spanForImportExportElements(n as NamedImports | NamedExports | ImportAttributes);
     }
 
-    function spanForImportExportElements(node: NamedImports | NamedExports | AssertClause | ImportAttributes) {
+    function spanForImportExportElements(node: NamedImports | NamedExports | ImportAttributes) {
         if (!node.elements.length) {
             return undefined;
         }