diff --git a/javascript/extractor/lib/typescript-go/internal/astconv/converter.go b/javascript/extractor/lib/typescript-go/internal/astconv/converter.go
index d93d65f3adf..2fc611a4c8c 100644
--- a/javascript/extractor/lib/typescript-go/internal/astconv/converter.go
+++ b/javascript/extractor/lib/typescript-go/internal/astconv/converter.go
@@ -82,11 +82,11 @@ func (c *Converter) convertNode(i int) (map[string]interface{}, error) {
 	// Add defined-bits-based properties
 	c.addDefinedBitProperties(i, kindName, node)
 
-	// TS7 doesn't set the NestedNamespace flag in the binary AST, but the Java
-	// extractor needs it to wrap inner namespace declarations in ExportNamedDeclaration.
-	// Detect nested namespaces (ModuleDeclaration whose body is another ModuleDeclaration)
-	// and add the flag to the inner declaration.
 	if kindName == "ModuleDeclaration" {
+		// TS7 doesn't set the NestedNamespace flag in the binary AST, but the Java
+		// extractor needs it to wrap inner namespace declarations in ExportNamedDeclaration.
+		// Detect nested namespaces (ModuleDeclaration whose body is another ModuleDeclaration)
+		// and add the flag to the inner declaration.
 		if body, ok := node["body"].(map[string]interface{}); ok {
 			if bodyKind, ok := body["kind"].(int); ok && bodyKind == 268 { // 268 = ModuleDeclaration
 				if flags, ok := body["flags"].(int); ok {
@@ -94,6 +94,19 @@ func (c *Converter) convertNode(i int) (map[string]interface{}, error) {
 				}
 			}
 		}
+
+		// TS7 binary AST doesn't have a GlobalAugmentation flag. Detect `declare global {}`
+		// by checking if the name is "global" (Identifier), and set a synthetic flag bit
+		// so the Java extractor can distinguish it from regular namespace declarations.
+		if name, ok := node["name"].(map[string]interface{}); ok {
+			if nameKind, ok := name["kind"].(int); ok && nameKind == 79 { // 79 = Identifier
+				if text, _ := name["escapedText"].(string); text == "global" {
+					if flags, ok := node["flags"].(int); ok {
+						node["flags"] = flags | (1 << 30) // synthetic GlobalAugmentation
+					}
+				}
+			}
+		}
 	}
 
 	return node, nil
diff --git a/javascript/extractor/lib/typescript-go/internal/tsparser/metadata.go b/javascript/extractor/lib/typescript-go/internal/tsparser/metadata.go
index 6fba227adf7..e6d074cdfbe 100644
--- a/javascript/extractor/lib/typescript-go/internal/tsparser/metadata.go
+++ b/javascript/extractor/lib/typescript-go/internal/tsparser/metadata.go
@@ -372,34 +372,40 @@ var syntaxKinds = map[string]int{
 	"JSDocImportTag":                344,
 }
 
-// nodeFlags maps NodeFlags names to their numeric values in TypeScript 7.
-// TS7 removed the Synthesized flag, shifting all subsequent flags down by one bit
-// compared to TS5. The Java extractor only checks Using, NestedNamespace, and
-// GlobalAugmentation, but we include all flags for completeness.
+// nodeFlags maps NodeFlags names to their numeric values sent to the Java extractor.
+// The Java extractor only checks Using, NestedNamespace, and GlobalAugmentation.
+//
+// TS7 binary AST flag layout (differs from TS5):
+//   bit 0: Let, bit 1: Const, bit 2: Using, bit 3: NestedNamespace (not set in binary),
+//   bit 4: Namespace, bit 5: OptionalChain, bit 6: ExportContext (was GlobalAugmentation
+//   in TS5 at bit 11), bit 7: ContainsThis, ...
+//
+// GlobalAugmentation is NOT a flag in the TS7 binary format. We use a synthetic bit (30)
+// that the converter sets on `declare global {}` nodes so the Java extractor can detect them.
 var nodeFlags = map[string]int{
 	"None":               0,
 	"Let":                1,
 	"Const":              2,
 	"Using":              4,    // Let | Const
 	"AwaitUsing":         6,    // Using | Const
-	"NestedNamespace":    8,    // bit 3 (TS7 binary AST doesn't set this)
-	"Namespace":          16,   // bit 4 (was 32 in TS5)
-	"OptionalChain":      32,   // bit 5 (was 64 in TS5)
-	"GlobalAugmentation": 64,   // bit 6 — on `declare global { }` (was 2048 in TS5)
-	"ExportContext":       128,  // bit 7
-	"ContainsThis":       256,  // bit 8
-	"HasImplicitReturn":  512,  // bit 9
-	"HasExplicitReturn":  1024, // bit 10
-	"HasAsyncFunctions":  2048, // bit 11
-	"DisallowInContext":  4096, // bit 12
-	"YieldContext":       8192, // bit 13
-	"DecoratorContext":   16384, // bit 14
-	"AwaitContext":       32768, // bit 15
-	"DisallowConditionalTypesContext": 65536, // bit 16
-	"ThisNodeHasError":   131072, // bit 17
-	"JavaScriptFile":     262144, // bit 18
-	"ThisNodeOrAnySubNodesHasError": 524288, // bit 19
-	"HasAggregatedChildData":        1048576, // bit 20
+	"NestedNamespace":    8,    // bit 3 — synthetic, set by converter
+	"Namespace":          16,   // bit 4
+	"OptionalChain":      32,   // bit 5
+	"ExportContext":       64,   // bit 6
+	"GlobalAugmentation": 1 << 30, // synthetic — set by converter for `declare global {}`
+	"ContainsThis":       128,  // bit 7
+	"HasImplicitReturn":  256,  // bit 8
+	"HasExplicitReturn":  512,  // bit 9
+	"HasAsyncFunctions":  1024, // bit 10
+	"DisallowInContext":  2048, // bit 11
+	"YieldContext":       4096, // bit 12
+	"DecoratorContext":   8192, // bit 13
+	"AwaitContext":       16384, // bit 14
+	"DisallowConditionalTypesContext": 32768, // bit 15
+	"ThisNodeHasError":   65536, // bit 16
+	"JavaScriptFile":     131072, // bit 17
+	"ThisNodeOrAnySubNodesHasError": 262144, // bit 18
+	"HasAggregatedChildData":        524288, // bit 19
 	"JSDoc":              8388608, // bit 23
 	"JsonFile":           67108864, // bit 26
 }