fix: fix types issue

bconnorwhite · Sep 30, 2020 · a7a9aef · a7a9aef
1 parent d75fc84
commit a7a9aef
Show file tree

Hide file tree

Showing 2 changed files with 17 additions and 6 deletions.
diff --git a/README.md b/README.md
@@ -39,13 +39,13 @@ import {
   TokensList
 } from "write-file-safe";
 
-function readMarkdown(path: string): Promise<TokensList>;
+function readMarkdown(path: string): Promise<TokensList | undefined>;
 
-function readMarkdownSync(path: string): TokensList;
+function readMarkdownSync(path: string): TokensList | undefined;
 
-function readMarkdownString(path: string): Promise<string>;
+function readMarkdownString(path: string): Promise<string | undefined>;
 
-function readMarkdownStringSync(path: string): string;
+function readMarkdownStringSync(path: string): string | undefined;
 
 // a Marked token list
 type TokensList = Token[] & {

diff --git a/source/index.ts b/source/index.ts
@@ -10,11 +10,22 @@ export function readMarkdownStringSync(path: string) {
 }
 
 export async function readMarkdown(path: string) {
-  return readMarkdownString(path).then((text) => lexer(text));
+  return readMarkdownString(path).then((text) => {
+    if(text === undefined) {
+      return undefined;
+    } else {
+      return lexer(text);
+    }
+  });
 }
 
 export function readMarkdownSync(path: string) {
-  return lexer(readMarkdownStringSync(path));
+  const text = readMarkdownStringSync(path);
+  if(text === undefined) {
+    return undefined;
+  } else {
+    return lexer(text);
+  }
 }
 
 export {