fix(function): support multiline import type statements in import scanning

pkg/function/deno.go

@@ -111,7 +111,8 @@ func resolveHostPath(jsonPath, hostPath string) string {
 }
 
 // Ref: https://regex101.com/r/DfBdJA/1
-var importPathPattern = regexp.MustCompile(`(?i)(?:import|export)\s+(?:{[^{}]+}|.*?)\s*(?:from)?\s*['"](.*?)['"]|import\(\s*['"](.*?)['"]\)`)
+// Note: Using [\s\S]*? instead of .*? to match newlines in multiline import type statements
+var importPathPattern = regexp.MustCompile(`(?i)(?:import|export)\s+(?:{[^{}]+}|[\s\S]*?)\s*(?:from)?\s*['"](.*?)['"]|import\(\s*['"](.*?)['"]\)`)
 
 func (importMap *ImportMap) WalkImportPaths(srcPath string, readFile func(curr string, w io.Writer) error) error {
 	seen := map[string]struct{}{}

pkg/function/deno_test.go

@@ -86,6 +86,21 @@ func TestImportPaths(t *testing.T) {
 		assert.NoError(t, err)
 		fsys.AssertExpectations(t)
 	})
+
+	t.Run("iterates multiline import type statements", func(t *testing.T) {
+		// This test verifies that multiline import type statements are correctly parsed
+		// The regex must use [\s\S]*? instead of .*? to match newlines
+		// Setup in-memory fs
+		fsys := MockFS{}
+		fsys.On("ReadFile", "testdata/modules/import_types.ts").Once()
+		fsys.On("ReadFile", "testdata/types/database.ts").Once()
+		// Run test
+		im := ImportMap{}
+		err := im.WalkImportPaths("testdata/modules/import_types.ts", fsys.ReadFile)
+		// Check error
+		assert.NoError(t, err)
+		fsys.AssertExpectations(t)
+	})
 }
 
 func TestResolveImports(t *testing.T) {

pkg/function/testdata/modules/import_types.ts

@@ -0,0 +1,22 @@
+// Test file for multiline import type statements
+// This pattern was broken before the [\s\S]*? fix
+
+// Multiline import type - should be matched by the regex
+import type {
+  Database,
+  Json
+} from '../types/database.ts'
+
+// Single line import type - should also work
+import type { Database as DB } from '../types/database.ts'
+
+// Re-export type to verify export pattern
+export type { Database } from '../types/database.ts'
+
+// Multiline export type
+export type {
+  Json
+} from '../types/database.ts'
+
+// Non-braced default type import - exercises the [\s\S]*? branch on single-line
+import type Database from '../types/database.ts'

pkg/function/testdata/types/database.ts

@@ -0,0 +1,11 @@
+export type Database = {
+  public: {
+    Tables: {
+      users: {
+        Row: { id: string; name: string }
+      }
+    }
+  }
+}
+
+export type Json = string | number | boolean | null | { [key: string]: Json } | Json[]