fix(gitignore): fixed type files getting falsely ignored

.gitignore

@@ -8,7 +8,7 @@ node_modules/
 dist/
 
 # compiled types
-types/
+*.d.ts
 
 # testing data
 data/

src/types/debug.interface.ts

@@ -0,0 +1,18 @@
+import { Maybe } from './misc/utils'
+
+/**
+ * Represents a debug result interface.
+ *
+ * Type parameters:
+ * - `TResult` ({@link any}) - The return type of the debug function.
+ *
+ * @typedef {object} IDebugResult<TResult>
+ * @prop {Maybe<TResult>} result The returned value of the debug function.
+ * @prop {Maybe<Error>} error The error that possibly could be thrown during the debug function call.
+ *
+ * @template TResult The return type of the debug function.
+ */
+export interface IDebugResult<TResult = any> {
+    result: Maybe<TResult>
+    error: Maybe<Error>
+}