chore: wip

Author: glennmichael123

packages/dtsx/test/dts.test.ts

@@ -39,6 +39,7 @@ describe('dts-generation', () => {
     'module',
     'namespace',
     'type',
+    'type-interface-imports',
     'variable',
   ]
 

packages/dtsx/test/fixtures/input/type-interface-imports.ts

@@ -0,0 +1,52 @@
+// Regression test for type/interface imports in d.ts files
+// When a type or interface uses an imported type, the import should be included in the d.ts file
+
+import type { ParsedPath } from 'node:path'
+import { readFileSync } from 'node:fs'
+
+/**
+ * Internal type that uses an imported type
+ */
+type FileInfo = {
+  path: ParsedPath
+  content: string
+}
+
+/**
+ * Interface that uses an imported type
+ */
+interface FileMetadata {
+  parsedPath: ParsedPath
+  size: number
+}
+
+/**
+ * Exported interface that uses another interface
+ */
+export interface FileDetails extends FileMetadata {
+  name: string
+}
+
+/**
+ * Exported function that returns a type using imported types
+ */
+export function getFileInfo(filePath: string): FileInfo {
+  return {
+    path: {} as ParsedPath,
+    content: readFileSync(filePath, 'utf-8')
+  }
+}
+
+/**
+ * Exported function that uses interface parameter
+ */
+export function processFile(metadata: FileMetadata): void {
+  console.log(metadata)
+}
+
+/**
+ * Exported type alias that uses imported type
+ */
+export type PathInfo = ParsedPath & {
+  exists: boolean
+}

packages/dtsx/test/fixtures/output/type-interface-imports.d.ts

@@ -0,0 +1,35 @@
+import type { ParsedPath } from 'node:path';
+/**
+ * Exported function that returns a type using imported types
+ */
+export declare function getFileInfo(filePath: string): FileInfo;
+/**
+ * Exported function that uses interface parameter
+ */
+export declare function processFile(metadata: FileMetadata): void;
+/**
+ * Interface that uses an imported type
+ */
+declare interface FileMetadata {
+  parsedPath: ParsedPath
+  size: number
+}
+/**
+ * Exported interface that uses another interface
+ */
+export declare interface FileDetails extends FileMetadata {
+  name: string
+}
+/**
+ * Internal type that uses an imported type
+ */
+declare type FileInfo = {
+  path: ParsedPath
+  content: string
+}
+/**
+ * Exported type alias that uses imported type
+ */
+export type PathInfo = ParsedPath & {
+  exists: boolean
+}