From c0187101e9cb3ea9d1966575efcd80ebb6a9a203 Mon Sep 17 00:00:00 2001
From: Sidharth Vinod <sidharthv96@gmail.com>
Date: Mon, 9 Sep 2024 17:30:22 +0530
Subject: [PATCH] fix: Return type, make config non optional

Co-authored-by: Alois Klink <alois@aloisklink.com>
---
 packages/mermaid/src/preprocess.ts | 4 ++--
 packages/mermaid/src/types.ts      | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/mermaid/src/preprocess.ts b/packages/mermaid/src/preprocess.ts
index 10bc0adea..a62326070 100644
--- a/packages/mermaid/src/preprocess.ts
+++ b/packages/mermaid/src/preprocess.ts
@@ -49,7 +49,7 @@ const processDirectives = (code: string) => {
  * @param code - The code to preprocess.
  * @returns The object containing the preprocessed code, title, and configuration.
  */
-export function preprocessDiagram(code: string): DiagramMetadata & { code: string } {
+export function preprocessDiagram(code: string) {
   const cleanedCode = cleanupText(code);
   const frontMatterResult = processFrontmatter(cleanedCode);
   const directiveResult = processDirectives(frontMatterResult.text);
@@ -59,5 +59,5 @@ export function preprocessDiagram(code: string): DiagramMetadata & { code: strin
     code,
     title: frontMatterResult.title,
     config,
-  };
+  } satisfies DiagramMetadata & { code: string };
 }
diff --git a/packages/mermaid/src/types.ts b/packages/mermaid/src/types.ts
index ae97bd69b..d8b4c4aa0 100644
--- a/packages/mermaid/src/types.ts
+++ b/packages/mermaid/src/types.ts
@@ -53,7 +53,7 @@ export interface ParseResult {
   /**
    * The config passed as YAML frontmatter or directives
    */
-  config?: MermaidConfig;
+  config: MermaidConfig;
 }
 // This makes it clear that we're working with a d3 selected element of some kind, even though it's hard to specify the exact type.
 export type D3Element = any;